Welcome to the North American Subaru Impreza Owners Club Saturday February 16, 2019
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC General > General Community

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 02-15-2016, 11:35 AM   #51
Obviously Tyler
Scooby Specialist
 
Member#: 395955
Join Date: Jul 2014
Chapter/Region: Tri-State
Location: Bucks County, PA
Vehicle:
2018 Mazda 3 GT
2018 Crosstrek

Default

Quote:
Originally Posted by x SLYC x View Post
Anyone experience any slipping during heavy acceleration? I am having this issue. Car drives perfectly fine under normal driving conditions, as well as when I am giving mild to moderate acceleration. It is only doing the slipping when it is getting more boost during heavy acceleration.
Quote:
Originally Posted by LsRamAir View Post
Yup, slipping around 4k rpm full throttle... Got progressively worse over a few weeks.

Dealer tried all their fixes, relearning, etc but no good. They don't warm the car up and drive it hard to make it happen without me being there to show them... So it's a pain to deal with.

They have had it for 2 solid weeks now. Needs a replacement I'd assume.

Awesome transmission , I love it, but it needs to hold a bit more tq to be in the WRX.
Are these modded or stock cars?
* Registered users of the site do not see these ads.
Obviously Tyler is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 02-15-2016, 06:42 PM   #52
BudgetPlan1
Scooby Newbie
 
Member#: 433101
Join Date: Oct 2015
Chapter/Region: MWSOC
Location: NE Ohio
Vehicle:
2016 WRX
Black

Default

FWIW...with stock tune on a 6mt, under WOT car just falls on its face just above 4k rpm. Sure it's not just that?
BudgetPlan1 is offline   Reply With Quote
Old 02-15-2016, 10:21 PM   #53
SeeeeeYa
Scooby Specialist
 
Member#: 129681
Join Date: Oct 2006
Chapter/Region: MAIC
Location: WV
Vehicle:
2017 FXT-T ES
SBM/SBL

Default

Quote:
Originally Posted by Obviously Tyler View Post
Are these modded or stock cars?
http://forums.nasioc.com/forums/show...&postcount=475
SeeeeeYa is offline   Reply With Quote
Old 02-16-2016, 09:18 AM   #54
Obviously Tyler
Scooby Specialist
 
Member#: 395955
Join Date: Jul 2014
Chapter/Region: Tri-State
Location: Bucks County, PA
Vehicle:
2018 Mazda 3 GT
2018 Crosstrek

Default

Quote:
Originally Posted by SeeeeeYa View Post
Thank you.

And that's exactly why I won't go beyond an intake and a tune on my CVT.

Which I don't even have plans to do anytime soon.
Obviously Tyler is offline   Reply With Quote
Old 02-16-2016, 08:38 PM   #55
Harey
Scooby Specialist
 
Member#: 270569
Join Date: Jan 2011
Chapter/Region: International
Vehicle:
'15 Foz XT & GT86

Default

It sounds like the tune gains on a 2016 model are much less anyway as the factory tune is so much better.
Harey is offline   Reply With Quote
Old 02-19-2016, 12:20 AM   #56
MarkF2
Scooby Newbie
 
Member#: 174359
Join Date: Mar 2008
Location: Long Island, NY
Vehicle:
2015 WRX
Ice Silver

Default

I have a stock 2015 WRX and I just had the ECM flashed for the recall. If I now get an AP and install it and then subsequently remove it, what is then on the ECM? The first generation Subaru version or new Flashed Subaru version?
MarkF2 is offline   Reply With Quote
Old 02-19-2016, 10:22 AM   #57
acemastr
Scooby Specialist
 
Member#: 400510
Join Date: Sep 2014
Chapter/Region: South East
Location: Tampa, FL
Vehicle:
2015 WRX Limited CVT
World Rally Blue

Default

Quote:
Originally Posted by MarkF2 View Post
I have a stock 2015 WRX and I just had the ECM flashed for the recall. If I now get an AP and install it and then subsequently remove it, what is then on the ECM? The first generation Subaru version or new Flashed Subaru version?
Any different?
acemastr is offline   Reply With Quote
Old 02-19-2016, 10:33 AM   #58
mishapopa
Scooby Specialist
 
Member#: 393629
Join Date: Jun 2014
Chapter/Region: W. Canada
Location: Calgary
Vehicle:
2015 WRX

Default

Quote:
Originally Posted by BudgetPlan1 View Post
FWIW...with stock tune on a 6mt, under WOT car just falls on its face just above 4k rpm. Sure it's not just that?
That's on the very early software. If you got a WRX manufactured after Oct-2014 or got the ECU flashed, it pulls all the way to redline pretty well.

Quote:
Originally Posted by MarkF2 View Post
I have a stock 2015 WRX and I just had the ECM flashed for the recall. If I now get an AP and install it and then subsequently remove it, what is then on the ECM? The first generation Subaru version or new Flashed Subaru version?
Are you running OTS map? Cobb updates their software just like Subaru does and of course uses Subaru base code, just different timing parameters. Keep up with the updates. Ezpz with an AP.
mishapopa is offline   Reply With Quote
Old 02-19-2016, 10:36 AM   #59
acemastr
Scooby Specialist
 
Member#: 400510
Join Date: Sep 2014
Chapter/Region: South East
Location: Tampa, FL
Vehicle:
2015 WRX Limited CVT
World Rally Blue

Default

I have the April '15 software... still dies at 4k
acemastr is offline   Reply With Quote
Old 02-19-2016, 10:47 AM   #60
BudgetPlan1
Scooby Newbie
 
Member#: 433101
Join Date: Oct 2015
Chapter/Region: MWSOC
Location: NE Ohio
Vehicle:
2016 WRX
Black

Default

Quote:
Originally Posted by mishapopa View Post
That's on the very early software. If you got a WRX manufactured after Oct-2014 or got the ECU flashed, it pulls all the way to redline pretty well.
2016 WRX, 6MT: At WOT, 4200rpm or so on up is less than spectacular w/ stock tune. Doesn't seem nearly as bad at 80% throttle though...much more linear.
BudgetPlan1 is offline   Reply With Quote
Old 02-19-2016, 10:52 AM   #61
mishapopa
Scooby Specialist
 
Member#: 393629
Join Date: Jun 2014
Chapter/Region: W. Canada
Location: Calgary
Vehicle:
2015 WRX

Default

Quote:
Originally Posted by acemastr View Post
I have the April '15 software... still dies at 4k
Can't speak for the 2015 WRX CVT but my friend's 2015 FXT seems to pull decently well at the higher revs. Isn't the CVT meant to maintain optimal RPM to get optimal acceleration?
mishapopa is offline   Reply With Quote
Old 02-19-2016, 11:05 AM   #62
acemastr
Scooby Specialist
 
Member#: 400510
Join Date: Sep 2014
Chapter/Region: South East
Location: Tampa, FL
Vehicle:
2015 WRX Limited CVT
World Rally Blue

Default

Quote:
Originally Posted by mishapopa View Post
Can't speak for the 2015 WRX CVT but my friend's 2015 FXT seems to pull decently well at the higher revs. Isn't the CVT meant to maintain optimal RPM to get optimal acceleration?
No, over 30% throttle it simulates gears, it doesn't work like the old CVT's that everyone hated.

Mashing your foot to the floor in S or S# it'll go to near red line then 'change' through the 'gears'. Using launch control in S# (foot on brake, foot on accelerator) yields the typical CVT goes to optimal rev and stays there
acemastr is offline   Reply With Quote
Old 02-19-2016, 05:07 PM   #63
MarkF2
Scooby Newbie
 
Member#: 174359
Join Date: Mar 2008
Location: Long Island, NY
Vehicle:
2015 WRX
Ice Silver

Default

Quote:
Originally Posted by MarkF2 View Post
I have a stock 2015 WRX and I just had the ECM flashed for the recall. If I now get an AP and install it and then subsequently remove it, what is then on the ECM? The first generation Subaru version or new Flashed Subaru version?
Quote:
Originally Posted by acemastr View Post
Any different?
Yes, feels like they castrated the power. Definitely smoother, but I feel like I lost quite a bit of oomph.

I did have pinging in the warm weather, so I definitely needed a new tune

I was so disappointed that I went and ordered a Cobb AP with a BrenTune
MarkF2 is offline   Reply With Quote
Old 03-06-2016, 05:35 PM   #64
LsRamAir
Scooby Newbie
 
Member#: 299398
Join Date: Oct 2011
Default

33 days at the dealer... And just got car back with a new CVT finally.

All fixed up. Couldn't deal with that slipping anymore..
LsRamAir is offline   Reply With Quote
Old 03-07-2016, 09:05 AM   #65
DDS4
Scooby Newbie
 
Member#: 391676
Join Date: May 2014
Location: Ohio
Vehicle:
2018 Tesla Model 3
2012 Infiniti G37x

Default

I had the February 2016 TCM firmware applied along with the new ECU firmware on my 2015 and it drives much better.

The February 2016 CVT update fixes slipping before the transmission warms up.
DDS4 is offline   Reply With Quote
Old 03-07-2016, 03:48 PM   #66
3szoom
Scooby Newbie
 
Member#: 406065
Join Date: Nov 2014
Location: Valencia, CA
Vehicle:
2015 WRX

Default

Quote:
Originally Posted by Presbyto123 View Post
Own a 2015 WRX With CVT. About 5000 miles. Really like the car but CVT sucks. Car will radomly surge between 6000 and 1000 rpm back and forth with steady throttle. Happens in sport and intelligent mode have not had it happen in sharp. Dealer can find nothing been there twice. Other posts on this site with others having same problem other than that car is very nice. Cobb does not offer a stage 2 tune to go with down pipe because of CVT reliability issues.
Hey you should bring your car in. This is a known issue with the CVT and it will need to be replaced. I just had mine replaced for the exact same issue and it's SO MUCH better to drive.
3szoom is offline   Reply With Quote
Old 03-07-2016, 06:14 PM   #67
LsRamAir
Scooby Newbie
 
Member#: 299398
Join Date: Oct 2011
Default

Quote:
Originally Posted by DDS4 View Post
I had the February 2016 TCM firmware applied along with the new ECU firmware on my 2015 and it drives much better.

The February 2016 CVT update fixes slipping before the transmission warms up.
Can you elaborate any more on your knowledge of these updates?

I always drove very nicely until the trans was warm, but still interested.

I hear the slipping problem i had could be the torque converter and not something else inside the trans. regardless, Subaru tried several fixes and eventually replaced the whole unit.
LsRamAir is offline   Reply With Quote
Old 03-07-2016, 08:57 PM   #68
xDRAN0x
Scooby Newbie
 
Member#: 163085
Join Date: Oct 2007
Chapter/Region: E. Canada
Location: Montreal, QC
Vehicle:
2019 '19 Ascent LTD
'18 Impreza Sport

Have a Nice Day?

I don't understand the love for the CVT.

I have been owning an '15 XT for the past 17 or so months and I really decided to give it a try since I'm a Subaru fanboy. Every single time I drive it, its a weird feeling. Of course its good on the MPG but the feeling is just bad and sluggish, it makes the awesome 2.0DIT feel like its working too much.

Even the 5AT in my Legacy feels better and that transmission is slow.

What Subaru needs is a DSG, but Japanese manufacturers don't seem to eager to go that way.

Edit : oh and no reliability issues,but only 19k miles so far
xDRAN0x is offline   Reply With Quote
Old 03-08-2016, 01:33 PM   #69
4wboost
Scooby Newbie
 
Member#: 442126
Join Date: Mar 2016
Default

CVT WRX is a fine commuter, but if you are looking for power out of it there are a couple crucial modifications you have to make. I have seen 3 CVT WRXs with broken transmissions. Once you go past installing aftermarket intake and exhaust, the transmission will start to slip and then overheat causing it to break. Luckily F1 motorsports has designed a pro series torque converter, transmission cooler and upgraded transmission lines. The F1 TC can handle up to 600hp and the transmission cooler can be top mounted or front mounted depending on the location of your intercooler. The cars I have seen this setup on run flawlessly and can now handle further modification. I have not seen any one else offer this so as of right now F1 Motorsports is the only one. Here is a link to their products for this platform

http://f1ms.net/subarucvt.html

They also have install videos of these parts if you don't have them install it. Hope this helps!
4wboost is offline   Reply With Quote
Old 03-08-2016, 03:16 PM   #70
DougNuts
Scooby Newbie
 
Member#: 192568
Join Date: Oct 2008
Location: Georgetown, KY
Vehicle:
2015 Outback 3.6R
2018 F150 3.5TT

Default

Quote:
Originally Posted by 4wboost View Post
The F1 TC can handle up to 600hp and the transmission cooler can be top mounted or front mounted depending on the location of your intercooler.
Does anyone know the torque limit of the chain/pulley system in the HTCVT? I would be very surprised if it could live behind a 600hp engine.
DougNuts is offline   Reply With Quote
Old 03-08-2016, 03:21 PM   #71
DougNuts
Scooby Newbie
 
Member#: 192568
Join Date: Oct 2008
Location: Georgetown, KY
Vehicle:
2015 Outback 3.6R
2018 F150 3.5TT

Default

Quote:
Originally Posted by xDRAN0x View Post
I don't understand the love for the CVT.
I love the CVT/3.6L combo in my Outback. It's only the second automatic transmission vehicle I have owned in 18 years of driving (~10 vehicles).

With that said, I have learned that the 2.0T cars have/had different TCM programming, the power band is obviously a bit different and I'm not exactly expecting performance car operation out of my Outback.
DougNuts is offline   Reply With Quote
Old 03-08-2016, 08:37 PM   #72
JustyWRC
Scooby Specialist
 
Member#: 153088
Join Date: Jul 2007
Location: Arlington, TN
Vehicle:
2005 Baja Turbo
06/04 For 18 Imp 4dr Sprt

Default

Quote:
Originally Posted by DougNuts View Post
Does anyone know the torque limit of the chain/pulley system in the HTCVT? I would be very surprised if it could live behind a 600hp engine.

I'll ask in the morning.
JustyWRC is offline   Reply With Quote
Old 03-10-2016, 07:58 AM   #73
JustyWRC
Scooby Specialist
 
Member#: 153088
Join Date: Jul 2007
Location: Arlington, TN
Vehicle:
2005 Baja Turbo
06/04 For 18 Imp 4dr Sprt

Default

They didn't know. FHI probably doesn't want it readily known so everyone goes out to modify.
JustyWRC is offline   Reply With Quote
Old 03-10-2016, 08:22 AM   #74
Zeeper
Scooby Specialist
 
Member#: 299286
Join Date: Oct 2011
Chapter/Region: NESIC
Location: Upstate NY
Vehicle:
2017 Legacy Limited
White

Default

Zeeper is offline   Reply With Quote
Old 03-10-2016, 08:23 AM   #75
rtv900
Scooby Specialist
 
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:
2016 STI

Default

Quote:
Originally Posted by DougNuts View Post
Does anyone know the torque limit of the chain/pulley system in the HTCVT? I would be very surprised if it could live behind a 600hp engine.
600 HP???????
what the

yeah I'm guessing it won't hold up 'beyond' 600 hp either. good call.
rtv900 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 09:34 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2019 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.