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Old 07-14-2012, 08:59 PM   #26
scx89
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Shift at 2.8-3k
Spirited = whatever you want
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Old 07-14-2012, 09:12 PM   #27
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Turn the ac on.. That will fix the problem


Bit of seat time and that will take care of it as well
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Old 07-14-2012, 09:41 PM   #28
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This is not an easy car to drive smoothly, but that's just the nature of the car. I usually shift the 1-2 around 3200-3500rpms and often pass on 3rd unless it's absolutely necessary. I find that having the A/C on makes the car harder to drive smoothly, especially if you have other people in the car (eg more weight). Warmer, humid weather and heat soak make things worse.
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Old 07-15-2012, 10:52 PM   #29
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Quote:
Originally Posted by MaddMax View Post
This is not an easy car to drive smoothly, but that's just the nature of the car. I usually shift the 1-2 around 3200-3500rpms and often pass on 3rd unless it's absolutely necessary. I find that having the A/C on makes the car harder to drive smoothly, especially if you have other people in the car (eg more weight). Warmer, humid weather and heat soak make things worse.

So you wind out 2nd to what then?
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Old 08-14-2012, 12:51 AM   #30
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I been trying to figure this car out and have been better but its so inconsistent.
I have been having better luck by pushing the gear shifter into gear more firmly
instead of my usual slacker 2-or-3 fingered tickle. is this mental? wtf is going on here?
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Old 08-14-2012, 12:53 AM   #31
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Quote:
Originally Posted by MaddMax View Post
This is not an easy car to drive smoothly, but that's just the nature of the car. I usually shift the 1-2 around 3200-3500rpms and often pass on 3rd unless it's absolutely necessary. I find that having the A/C on makes the car harder to drive smoothly, especially if you have other people in the car (eg more weight). Warmer, humid weather and heat soak make things worse.

i like your explination but i need to minimize wear on this thing as much as humanly possible. I already have 25k on it. maybe this wasnt the car for me to get as I drive a lot. I am having a lot of fun though....most of the time....
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Old 08-14-2012, 12:51 PM   #32
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What you have to do to shift smoothly is anticipate the amount of time it takes for the RPMs to drop before releasing the clutch. The drop in RPM from 1-->2 is like 1.2k RPM so if you try to shift quickly you slam the diff into the undercarriage. Either 1)slip the clutch moar or 2) Clutch in...wait...wait...wait...wait release clutch. Eventually it becomes a habit and it's easy to drive smoothly but it's definitely something you actively have to learn.

I've found that the phrases "clutch in" and "clutch out", if said slowly, are the appropriate amount of time for shifting. While saying them your foot should be moving, either on or off the clutch.

This is for granny shifting mind you.
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Old 08-15-2012, 12:13 AM   #33
scx89
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Ur not gonna wear out ur tranny by granny shifting or Slipping the clutch while you learn lol..
Even if ur a slow learner, u would have learned how to shift smoothly way before ur trans die. Just try everything out and ull be solid.
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Old 10-04-2012, 10:40 AM   #34
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I really think that this http://forums.nasioc.com/forums/show....php?t=2231593
is what I am experiencing. Air in my clutch lines? It hasn't gone away and is not my fault. It went away for a little bit in august and its been happening for 3 weeks now and its painful to drive. I feel like im really putting extra wear on my clutch. I'll report back after a visit to the stealership.
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Old 10-04-2012, 03:07 PM   #35
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I read in the thread mentioned in my previous post that if I pump the clutch before driving that it would go away and it did. I pumped it about 10 15 times and then drove off as usual. The difference was night and day. I was able to shift smoothly and easily without that grabbing or thumping sensation I feel often.

When the problem is happening, it feels like when I am slowly engaging the clutch after shifting, it lets go and just grabs the flywheel abruptly resulting in a slight reduction of speed and momentum and a general bad feeling in my gut.

Maybe this is a better explanation than my initial post. Appointment on Monday if the problem persists. I don't want to bring it in unless it is happening. The service manager ay te must reproduce it before performing any repairs. .
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Old 10-05-2012, 07:34 PM   #36
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Quote:
Originally Posted by rkjunior View Post
Sure it's not the diff?
i've been told that thump is the rear differential.
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Old 10-06-2012, 02:44 AM   #37
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our 2011 wrxs take 93oct gas. anything more or less the ecu recalibrates. never put in anything less then 91oct. avoid no name gas stations unless unavoidable.

if u drive stick on a 2wd then goto an awd its a real awakening. if u want to get rid of the thump try getting 29mpg in ur wrx(its possible). it will teach u to finesse ur clutch and gas between shifts. drive with radio off so u can hear ur car.

incase u didnt know...any mod from intake through and to the flange at the start of ur catback requires a tune....
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Old 10-09-2012, 09:29 AM   #38
echardcore
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Quote:
Originally Posted by djtypewhazn View Post
our 2011 wrxs take 93oct gas. anything more or less the ecu recalibrates. never put in anything less then 91oct. avoid no name gas stations unless unavoidable.

if u drive stick on a 2wd then goto an awd its a real awakening. if u want to get rid of the thump try getting 29mpg in ur wrx(its possible). it will teach u to finesse ur clutch and gas between shifts. drive with radio off so u can hear ur car.

incase u didnt know...any mod from intake through and to the flange at the start of ur catback requires a tune....
I always put 93 from BP or Exxon. Right now, this morning, she is smooth as could be. I can easily feather the clutch to make all shifts smooth. It has been fairly good since I pumped the clutch pedal a few days ago. There were just a few shifts here and there that it happened over the weekend but today its perfect.

Can anyone describe the sensation a driver would feel if there was a little bit of air in the clutch lines?

Here is my main issue right now. I want this fixed. The dealer wants to see it happen before they bleed the clutch under warranty. They said it would only cost about $125. Should I just have them bleed it? Or should I wait for it to get worse again. I don't want to leave my car at the dealer to wait until they notice it. I also don't want to pay the $$$ right now.

Thanks for your input guys.
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Old 10-09-2012, 02:10 PM   #39
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Have another garage bleed it if they won't do it under warranty.
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Old 03-28-2013, 01:03 PM   #40
echardcore
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Well Im still experiencing this issue and see multiple threads all over the net. This guy explains it very well in this thread :
http://www.standardshift.com/forum/v...=14757&start=0

Next time it starts happening I am not going into work and going straight to the dealer.
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Old 03-28-2013, 02:38 PM   #41
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Quote:
Originally Posted by echardcore View Post
Well Im still experiencing this issue and see multiple threads all over the net. This guy explains it very well in this thread :
http://www.standardshift.com/forum/v...=14757&start=0

Next time it starts happening I am not going into work and going straight to the dealer.
He is also a new timer to driving a manual though.
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Old 05-09-2013, 12:00 PM   #42
echardcore
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This is still happening. I thought that it might be due to thick-soled shoes minimizing my feel for the gas pedal. Well that wasn't it. It came back. This is definitely not my fault. The car was driving like a dream and now it feels like crap again. It is raining hard here today. I am running BP Ultimate. I am going to switch away from BP and see what happens. I bought some Lucas Octane Booster but I'm afraid to put it in my tank after research for various reasons.

Even though I am new to manual I know how to drive it and when the car is driving correctly I can have fun and experiment with shifting at different RPMs and my failures are obvious. Now, almost every shift (1 > 2, sometimes a little of 2>3) is crap. Clutch, shift, little gas, release, and the car loses momentum throwing my body forward for a second. It is impossible to feather or ride the clutch. It just engages. It feels nothing like when engaging the clutch without giving it gas. I really wanted to stop at the dealer today but couldn't. Maybe I won't drive it and make an appointment for Monday.
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Old 05-09-2013, 05:58 PM   #43
Kinjirra
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I have no issue with mine except when I dont give it a touch of gas when I engage the clutch. These cars are harder to drive then any manual that I have driven and take some finesse to learn. Part is due to the awd, part to the drive by wire and part due to the crazy soft bushings they use for the transmission mounts and other suspension bits making it feel worse then it is when they start to bounce around. This is my second wrx and I still on occasion get a jerky start, bog it or stall it.
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Old 05-09-2013, 06:39 PM   #44
C4RBON_F1BER
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I read that post over on standardshift... one thing you have to realize, is that to get a fast and smooth shift from 1st to 2nd, you have to bring down the engine speed with the clutch before fully engaging. If not, you have to wait for the engine speed to drop naturally, which feels like an eternity if you are in traffic with a cold engine. Either way, I don't see how octane or gas has anything to do with shifting smoothness.
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Old 05-10-2013, 11:34 AM   #45
echardcore
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Quote:
Originally Posted by C4RBON_F1BER View Post
I read that post over on standardshift... one thing you have to realize, is that to get a fast and smooth shift from 1st to 2nd, you have to bring down the engine speed with the clutch before fully engaging. If not, you have to wait for the engine speed to drop naturally, which feels like an eternity if you are in traffic with a cold engine. Either way, I don't see how octane or gas has anything to do with shifting smoothness.
Thats the problem - I can't bring the engine RPMs down with the clutch before fully engaging. It just engages on its own before the pedal is fully released at a point that is different than the usual engagement point. The pedal will be lower to the ground than normal. It just catches. No feathering. This is what Im trying to explain. I cant ride/feather the clutch. t just grabs on its own. It is such a displeasing feeling. Doesn't feel natural at all. I cant make it go away when it is happening. I was gonna go to the dealer today but it stopped happening on the way home last night. Then it happened again on the way into work.


I forgot that I have the OBD adapter and the Torque app on my android phone. Anyone know if there is anything useful I can monitor using that app that might help me figure out the cause? I'd be willing to get the paid version if necessary.
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Old 05-10-2013, 11:44 AM   #46
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Quote:
Originally Posted by echardcore View Post
Thats the problem - I can't bring the engine RPMs down with the clutch before fully engaging. It just engages on its own before the pedal is fully released at a point that is different than the usual engagement point. The pedal will be lower to the ground than normal. It just catches. No feathering. This is what Im trying to explain. I cant ride/feather the clutch. t just grabs on its own. It is such a displeasing feeling. Doesn't feel natural at all. I cant make it go away when it is happening. I was gonna go to the dealer today but it stopped happening on the way home last night. Then it happened again on the way into work.


I forgot that I have the OBD adapter and the Torque app on my android phone. Anyone know if there is anything useful I can monitor using that app that might help me figure out the cause? I'd be willing to get the paid version if necessary.
This doesn't sound engine related. This sounds clutch related. There could be a problem with the hydraulics that actuate the clutch, or the pressure plate could have something wonky going on, or the pedal assembly could be doing something bizarre, or there could be some kind of broken bracket somewhere. I'd take it to the dealer and have them poke around. If it happens frequently enough its bound to happen at the dealer too.
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Old 05-10-2013, 11:57 AM   #47
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Quote:
Originally Posted by C4RBON_F1BER View Post
This doesn't sound engine related. This sounds clutch related. There could be a problem with the hydraulics that actuate the clutch, or the pressure plate could have something wonky going on, or the pedal assembly could be doing something bizarre, or there could be some kind of broken bracket somewhere. I'd take it to the dealer and have them poke around. If it happens frequently enough its bound to happen at the dealer too.
Yeah this all sounds probable. I just want to make sure it is happening before I lose a day or half-day at work. And I really hate bring my car to the dealer and leaving it. There is always something wrong with it when I get it back.
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Old 06-28-2013, 09:28 AM   #48
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This is still going on.

I thought I might have finally figured it out and found that Sunoco 93 seemed to stop the issue. Went through 2 tanks of it. Car drove like a dream. Got 25 mpg (according to the gauge) and over 320 mi on the last tank! This has never happened. Great! Filled up on it a third time, same station. I immediately felt the difference pulling out of the station. Its still happening. Even if I rev first gear up to 5k, then shift, when I engage the clutch gently, it just grabs. No feathering. No riding the clutch gently into gear. It just grabs it and momentum is lost.

I am starting to lean towards a stage one to see if that fixes it. I am most concerned with prolonging the car's life. I wonder if stage one with everything stock will be better or worse for longevity.

I dread leaving it at the dealer. Their lifts pop the side skirts out and their mechanics ding the painted aluminum wheels up.
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Old 06-28-2013, 04:12 PM   #49
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OP, it's hard to know exactly what kind of "thump" you're describing without seeing it, but I get the feeling we're experiencing somewhat similar issues.

Ever since I got my '13 WRX, one thing I noticed was how hard it is to drive this car smoothly. I used to have an Acura Integra that shifted buttery-smooth. In that car, the clutch felt very progressive, making it easy to shift smooth without even thinking. In comparison, I found it hard to shift the WRX without experiencing a slight "thump" toward the end of the shift. In my opinion, I don't think the quality of gas has anything to do with it.

One thing I found helpful was to wait a split second longer than usual before stepping again on the gas, but then again, where's the fun in that?!
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Old 12-31-2013, 09:37 AM   #50
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OP UPDATED!

RESOLVED!!!

I had my clutch bled at the dealer against the tech's recommendations a few months ago and I haven't ha the problem since!!! So happy. I can smoothly transition into any gear and driving is much more pleasurable now. Shifting is more predictable and I know when it is going to grab unlike before. I just hope I didn't have premature clutch wear.


I still have the whirring sound when cold that goes away after a mile or so. I read this is the throwout bearing and that it is normal and don't think I am going to persue this noise.
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