Welcome to the North American Subaru Impreza Owners Club Sunday December 28, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Subaru Models > Impreza Forum

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 03-12-2013, 06:58 PM   #1
webster354
Scooby Newbie
 
Member#: 343343
Join Date: Jan 2013
Chapter/Region: VIC
Vehicle:
2014 Impreza 5dr Ltd
SWP

Default Stock (16mm) rear sway bar to 19mm+ for daily driver

After upgrading your stock RSB (16mm) to 19mm did you notice a significant change for daily driving on your 2012+?

Edited for simplicity.

Looking for some feedback from 2012+ owners who upgraded from the stock (16mm) rear sway bar to 19mm+ (eg. 2010 STI RSB). I've read through the 2012 and aftermarket threads and from what I understand adding a 19mm RSB is an excellent upgrade, but I haven't always been able to determine...
  • Did they originally have no RSB or did they have a stock size?
  • Did they use the original endlinks or aftermarket?
  • Were the comments based on daily driving or track performance?
  • Is it a hatch or sedan?
  • Have they done any other suspension modifications?
So far for daily driving, I've found the stock RSB to be sufficient. Let me know what you guys think.
* Registered users of the site do not see these ads.

Last edited by webster354; 03-13-2013 at 02:16 AM.
webster354 is offline   Reply With Quote
Old 03-12-2013, 07:35 PM   #2
jsteg
Scooby Specialist
 
Member#: 329271
Join Date: Aug 2012
Chapter/Region: South East
Location: Lady's Island, SC
Vehicle:
2012 Impreza Limited
Ice Silver Metallic

Default

I see you edited your original post since I was going to reply lol....oh well....you should re-read through those threads though....all your answers are there!
jsteg is offline   Reply With Quote
Old 03-12-2013, 08:13 PM   #3
aeoporta
Scooby Specialist
 
Member#: 334126
Join Date: Oct 2012
Chapter/Region: Tri-State
Location: New York
Vehicle:
2013 5mt Sp Premium
Venetian Red & Dark Gray

Default

I am a leaf in the wind....
aeoporta is offline   Reply With Quote
Old 03-13-2013, 02:12 AM   #4
webster354
Scooby Newbie
 
Member#: 343343
Join Date: Jan 2013
Chapter/Region: VIC
Vehicle:
2014 Impreza 5dr Ltd
SWP

Default

Quote:
Originally Posted by jsteg View Post
I see you edited your original post since I was going to reply lol....oh well....you should re-read through those threads though....all your answers are there!
I think only added 2012+ to my post, but regardless, the reason for this thread is the only info I've found is really is...adding the 19mm RSB improved the handling of my car, it's more neutral, great value upgrade...etc. Posts that did refer to the stock RSB mainly just mentioned you can reuse most of the parts.

I think I'll simplify my OP.
webster354 is offline   Reply With Quote
Old 03-13-2013, 10:24 AM   #5
myrt1987
Scooby Specialist
 
Member#: 323103
Join Date: Jun 2012
Chapter/Region: Tri-State
Location: toms river, nj
Vehicle:
2012 Limited 2.0i
Dreamy Gray Mistress

Default

I didnt see a huge difference. But I may be a bad sample.

I thought the car handled great before, so maybe I didnt pay attention to how much body roll there was at 16mm.

I have sedan so maybe the rsb benefits the 5dr more due to increased weight on back tires.

And also I have cvt so rpms seem to hover lower than the 5speed. Perhaps this is why I dont get the squirrely effect often reported.

With all that being said it handles great and still reccomend the upgrade.
myrt1987 is offline   Reply With Quote
Old 03-13-2013, 10:47 AM   #6
Dirt Bringer
Scooby Newbie
 
Member#: 340297
Join Date: Dec 2012
Chapter/Region: MWSOC
Location: Cincinnati
Vehicle:
2013 Impreza 5sp Prm
Ice Silver

Default

Quote:
Originally Posted by myrt1987 View Post
I didnt see a huge difference. But I may be a bad sample.

I thought the car handled great before, so maybe I didnt pay attention to how much body roll there was at 16mm.

I have sedan so maybe the rsb benefits the 5dr more due to increased weight on back tires.

And also I have cvt so rpms seem to hover lower than the 5speed. Perhaps this is why I dont get the squirrely effect often reported.

With all that being said it handles great and still reccomend the upgrade.
If you didn't notice a difference, then you weren't driving aggressively enough before. It completely cures understeer and negates body roll completely after a certain point, making the car much more predictable and planted in very heavy cornering, which it can pull off quite well.
Dirt Bringer is offline   Reply With Quote
Old 03-13-2013, 10:58 AM   #7
sgoldste01
Scooby Specialist
 
Member#: 322264
Join Date: Jun 2012
Chapter/Region: Tri-State
Location: Webster, NY
Vehicle:
2012 Impreza Sp 5sp
Obs Blk Prl/Drk Gray Mtl

Default

Quote:
Originally Posted by Dirt Bringer View Post
If you didn't notice a difference, then you weren't driving aggressively enough before. It completely cures understeer and negates body roll completely after a certain point, making the car much more predictable and planted in very heavy cornering, which it can pull off quite well.
Yeah, this is why I was thinking about doing this upgrade but decided against it. Like Myrt (judging from his MPGs), I drive conservatively most of the time. So while I like a crisp handling car, I seldom push the Impreza very hard, and doubt that I'd get much out of the 19mm RSB.

On the other hand, I do shift the car every day, so a short shift kit is still on my radar screen.
sgoldste01 is offline   Reply With Quote
Old 03-13-2013, 11:04 AM   #8
myrt1987
Scooby Specialist
 
Member#: 323103
Join Date: Jun 2012
Chapter/Region: Tri-State
Location: toms river, nj
Vehicle:
2012 Limited 2.0i
Dreamy Gray Mistress

Default

Quote:
Originally Posted by Dirt Bringer View Post
If you didn't notice a difference, then you weren't driving aggressively enough before. It completely cures understeer and negates body roll completely after a certain point, making the car much more predictable and planted in very heavy cornering, which it can pull off quite well.
Yea its possible. Im not about to go drive around around with my foot to the floor but i like to make some quick turns through round-abouts.

I did say i was a bad example. lol
myrt1987 is offline   Reply With Quote
Old 03-13-2013, 11:05 AM   #9
Dirt Bringer
Scooby Newbie
 
Member#: 340297
Join Date: Dec 2012
Chapter/Region: MWSOC
Location: Cincinnati
Vehicle:
2013 Impreza 5sp Prm
Ice Silver

Default

Quote:
Originally Posted by sgoldste01 View Post
Yeah, this is why I was thinking about doing this upgrade but decided against it. Like Myrt (judging from his MPGs), I drive conservatively most of the time. So while I like a crisp handling car, I seldom push the Impreza very hard, and doubt that I'd get much out of the 19mm RSB.

On the other hand, I do shift the car every day, so a short shift kit is still on my radar screen.
I have a Perrin short shift adapter coming in today, so I'll report back on that sometime in the near future. 70 bucks for the kit is pretty cheap though so you may want to look into it seeing as it includes the bushings as well.
Dirt Bringer is offline   Reply With Quote
Old 03-13-2013, 11:20 AM   #10
sgoldste01
Scooby Specialist
 
Member#: 322264
Join Date: Jun 2012
Chapter/Region: Tri-State
Location: Webster, NY
Vehicle:
2012 Impreza Sp 5sp
Obs Blk Prl/Drk Gray Mtl

Default

Quote:
Originally Posted by Dirt Bringer View Post
I have a Perrin short shift adapter coming in today, so I'll report back on that sometime in the near future. 70 bucks for the kit is pretty cheap though so you may want to look into it seeing as it includes the bushings as well.
Yeah, that's the kit I'm looking at. Some here have reported not bothering installing the bushings from that kit, and being satisfied with the results of only doing the "passenger compartment" portion of the job.

I'd like to hear from someone who has done the bushing part of the job and describe how hard it is to do. Don't you have to lower the differential or something to accomplish the bushing replacement? I'm guessing this isn't as hard as it sounds (I'm guessing you just remove some bolts and lower the diff a few inches with a floor jack, but this is just a WAG).

Regardless, lowering the diff makes me nervous.
sgoldste01 is offline   Reply With Quote
Old 03-13-2013, 11:36 AM   #11
Dirt Bringer
Scooby Newbie
 
Member#: 340297
Join Date: Dec 2012
Chapter/Region: MWSOC
Location: Cincinnati
Vehicle:
2013 Impreza 5sp Prm
Ice Silver

Default

Quote:
Originally Posted by sgoldste01 View Post
Yeah, that's the kit I'm looking at. Some here have reported not bothering installing the bushings from that kit, and being satisfied with the results of only doing the "passenger compartment" portion of the job.

I'd like to hear from someone who has done the bushing part of the job and describe how hard it is to do. Don't you have to lower the differential or something to accomplish the bushing replacement? I'm guessing this isn't as hard as it sounds (I'm guessing you just remove some bolts and lower the diff a few inches with a floor jack, but this is just a WAG).

Regardless, lowering the diff makes me nervous.
Yeah well, this is my first car and daily driver. Every modification I make a think about extensively before making with respect to reliability, resale value and warranty, as I want to get a BRZ or WRX in a few years, so I won't be installing the bushings myself. Instead I plan to get a professional to do it. Could I do it myself? Probably. Could I afford to mess it up? No. I'll report back to you after the adapter is on, and again after the bushings get installed, but I won't be installing them myself so I can't help you there. From what I've read, it has something to do with removing the transmission supports and supporting it with a jack or something to that effect.
Dirt Bringer is offline   Reply With Quote
Old 03-13-2013, 11:43 AM   #12
aeoporta
Scooby Specialist
 
Member#: 334126
Join Date: Oct 2012
Chapter/Region: Tri-State
Location: New York
Vehicle:
2013 5mt Sp Premium
Venetian Red & Dark Gray

Default

my car felt more stable especially in head wind, cornering has improved. She is extremely responsive especially when paired with a good set of tires. no more squirly car feel.

Tank mode summer edition
I live my life 1 mile at a time especially when going 5 above the speed limit
aeoporta is offline   Reply With Quote
Old 03-13-2013, 11:55 AM   #13
sgoldste01
Scooby Specialist
 
Member#: 322264
Join Date: Jun 2012
Chapter/Region: Tri-State
Location: Webster, NY
Vehicle:
2012 Impreza Sp 5sp
Obs Blk Prl/Drk Gray Mtl

Default

Quote:
Originally Posted by Dirt Bringer View Post
Yeah well, this is my first car and daily driver. Every modification I make a think about extensively before making with respect to reliability, resale value and warranty, as I want to get a BRZ or WRX in a few years, so I won't be installing the bushings myself. Instead I plan to get a professional to do it. Could I do it myself? Probably. Could I afford to mess it up? No. I'll report back to you after the adapter is on, and again after the bushings get installed, but I won't be installing them myself so I can't help you there. From what I've read, it has something to do with removing the transmission supports and supporting it with a jack or something to that effect.
Are you going to have a pro do the entire installation, or just the bushings? If you did the non-bushing portion of the job, that would give us a nice opportunity to see how much of an improvement just the short shifter makes on its own, and then how much additional improvement the bushings make.
sgoldste01 is offline   Reply With Quote
Old 03-13-2013, 11:59 AM   #14
Dirt Bringer
Scooby Newbie
 
Member#: 340297
Join Date: Dec 2012
Chapter/Region: MWSOC
Location: Cincinnati
Vehicle:
2013 Impreza 5sp Prm
Ice Silver

Default

Quote:
Originally Posted by sgoldste01 View Post
Are you going to have a pro do the entire installation, or just the bushings? If you did the non-bushing portion of the job, that would give us a nice opportunity to see how much of an improvement just the short shifter makes on its own, and then how much additional improvement the bushings make.
Yes I plan to do the non-bushing portion of it today and report back soon. It looks like a fairly simple process where not much can go wrong, so I don't really have a problem doing it.
Dirt Bringer is offline   Reply With Quote
Old 03-13-2013, 12:05 PM   #15
sgoldste01
Scooby Specialist
 
Member#: 322264
Join Date: Jun 2012
Chapter/Region: Tri-State
Location: Webster, NY
Vehicle:
2012 Impreza Sp 5sp
Obs Blk Prl/Drk Gray Mtl

Default

EXCELLENT!

I look forward to your report, and for your comparison of how shifts feel after the bushings are installed.
sgoldste01 is offline   Reply With Quote
Old 03-13-2013, 03:47 PM   #16
Rememo
Scooby Newbie
 
Member#: 340728
Join Date: Dec 2012
Location: Milwaukee, WI
Vehicle:
2013 Impreza 5-spd

Default

I installed a Perrin adapter before I installed the bushings. The feel was as expected; much shorter throws that still felt slightly vague and rubbery.

With the bushings installed, the shifting is almost rock solid. It now feels almost like the best Honda transmissions, where the shifter almost "snicks" into each gear. Fifth gear is still annoying, but less vague.

I found that I didn't like the position of the shifter with the Perrin adapter, so I just installed a TWM shifter. It's very nice.

Pro tip: I had a HELL of a time trying to get the holes in the Perrin rear bushing to line up with the holes in the car. It was cussing-like-a-sailor difficult. I recommend installing at least the rear bushing before installing any type of short shifter. That should allow for more wiggle room.
Rememo is offline   Reply With Quote
Old 03-13-2013, 06:16 PM   #17
webster354
Scooby Newbie
 
Member#: 343343
Join Date: Jan 2013
Chapter/Region: VIC
Vehicle:
2014 Impreza 5dr Ltd
SWP

Default

Thanks for the feedback.

I think I'll hold off on the 19mm RSB for now as I'm satisfied with the handling for daily driving. I'm sure I'll get a better understanding of the handling and performance after I take up to the mountain.
webster354 is offline   Reply With Quote
Old 03-13-2013, 06:40 PM   #18
flyboy1100
Scooby Specialist
 
Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:
2012 2.0i Sport 5MT
DGM

Default

Quote:
Originally Posted by sgoldste01 View Post
Yeah, this is why I was thinking about doing this upgrade but decided against it. Like Myrt (judging from his MPGs), I drive conservatively most of the time. So while I like a crisp handling car, I seldom push the Impreza very hard, and doubt that I'd get much out of the 19mm RSB.

On the other hand, I do shift the car every day, so a short shift kit is still on my radar screen.
COBB is pretty nice..
flyboy1100 is online now   Reply With Quote
Old 03-13-2013, 06:41 PM   #19
flyboy1100
Scooby Specialist
 
Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:
2012 2.0i Sport 5MT
DGM

Default

Quote:
Originally Posted by webster354 View Post
Thanks for the feedback.

I think I'll hold off on the 19mm RSB for now as I'm satisfied with the handling for daily driving. I'm sure I'll get a better understanding of the handling and performance after I take up to the mountain.
the 19mm was night and day difference to me. there was a lot of understeer before, now it is pretty much neutral. the way it corners is different from anything i have ever driven before, but that is because i am used to understeer and not neutral steering.
flyboy1100 is online now   Reply With Quote
Old 03-13-2013, 06:43 PM   #20
flyboy1100
Scooby Specialist
 
Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:
2012 2.0i Sport 5MT
DGM

Default

Quote:
Originally Posted by Dirt Bringer View Post
Yeah well, this is my first car and daily driver. Every modification I make a think about extensively before making with respect to reliability, resale value and warranty, as I want to get a BRZ or WRX in a few years, so I won't be installing the bushings myself. Instead I plan to get a professional to do it. Could I do it myself? Probably. Could I afford to mess it up? No. I'll report back to you after the adapter is on, and again after the bushings get installed, but I won't be installing them myself so I can't help you there. From what I've read, it has something to do with removing the transmission supports and supporting it with a jack or something to that effect.
really really really difficult to mess them up...how will you ever learn and build confidence in your skills unless you try, especially something as simple as the bushings. watch youtube videos, there aren't any changes from the last gen.
flyboy1100 is online now   Reply With Quote
Old 03-13-2013, 07:01 PM   #21
webster354
Scooby Newbie
 
Member#: 343343
Join Date: Jan 2013
Chapter/Region: VIC
Vehicle:
2014 Impreza 5dr Ltd
SWP

Default

Quote:
Originally Posted by Dirt Bringer View Post
If you didn't notice a difference, then you weren't driving aggressively enough before. It completely cures understeer and negates body roll completely after a certain point, making the car much more predictable and planted in very heavy cornering, which it can pull off quite well.
How fast are you going to notice understeering? For example, on a highway exit loop are you going more than 50% over the posted speed limit?
webster354 is offline   Reply With Quote
Old 03-13-2013, 11:24 PM   #22
flyboy1100
Scooby Specialist
 
Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:
2012 2.0i Sport 5MT
DGM

Default

Quote:
Originally Posted by webster354 View Post

How fast are you going to notice understeering? For example, on a highway exit loop are you going more than 50% over the posted speed limit?
Most definitely, I'm usually around double
flyboy1100 is online now   Reply With Quote
Old 03-14-2013, 11:04 AM   #23
Dirt Bringer
Scooby Newbie
 
Member#: 340297
Join Date: Dec 2012
Chapter/Region: MWSOC
Location: Cincinnati
Vehicle:
2013 Impreza 5sp Prm
Ice Silver

Default

Quote:
Originally Posted by webster354 View Post
How fast are you going to notice understeering? For example, on a highway exit loop are you going more than 50% over the posted speed limit?
Yeah pretty much. I push the car very near the limit of it's grip a lot of the time. I've never been one for acceleration, it's fun but I can live with a slowish car. I cannot however respect, or drive, a car with poor handling. It's no wonder why in my case, I love corners.
Dirt Bringer is offline   Reply With Quote
Old 03-14-2013, 11:18 AM   #24
Dirt Bringer
Scooby Newbie
 
Member#: 340297
Join Date: Dec 2012
Chapter/Region: MWSOC
Location: Cincinnati
Vehicle:
2013 Impreza 5sp Prm
Ice Silver

Default

Quote:
Originally Posted by sgoldste01 View Post
EXCELLENT!

I look forward to your report, and for your comparison of how shifts feel after the bushings are installed.
I got the short shift adapter installed last night. It's actually pretty amazing. Took for god damn well ever, and was not as easy as I was made to believe. The new components of the dash do not want to come out easily the first time, but they aren't bad the second time you pop them out. Once you get past the hard part of the e-brake boot and shift bezel things get easier. I'm running a little past the halfway point of throw and it feels like a sports car throw now. The hardest parts were getting the bushings out of the shifter pivot location (used a blunt beer cap opener and a flathead screwdriver to slowly pry them out without causing damage), and getting the adapter on. The top of the shifter has burrs you have to file off, and some force has to be applied for the adapter to slide on, but once it does, it slides down pretty easily. I had to apply a ton of clamping force to the bolt that holds the adapter on to keep it from sliding, I just hope it doesn't slowly work it's way down over time or I'll have to go back in and adjust it again. The shift levers position is barely effected and feels just fine, and shifts are orders of magnitude more positive and responsive. The force it takes to get the car in gear now is higher, but once you get used to that your shifts will be much much faster. I could barely feel the shifts last night with some proper use of the clutch and some quick shifting. I still want to install the perrin bushings but this is much much better already. There is a boot under the bezel and boot over the shifter, it has some sound insulation and probably helps to avoid dust getting in or something. I may remove it because honestly I don't mind the sound of a nice shifter and it does have some resistance to it, but for now I think it's fine.
Dirt Bringer is offline   Reply With Quote
Old 03-14-2013, 11:37 AM   #25
sgoldste01
Scooby Specialist
 
Member#: 322264
Join Date: Jun 2012
Chapter/Region: Tri-State
Location: Webster, NY
Vehicle:
2012 Impreza Sp 5sp
Obs Blk Prl/Drk Gray Mtl

Default

Thanks for the update, Dirt. I'll look forward to hearing how much additional improvement you see from the bushings, or if you think most of the gain is from the portion of the installation you've already completed.
sgoldste01 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 01:26 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.