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Old 11-12-2021, 11:32 AM   #1
etsola
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Member#: 484839
Join Date: Apr 2018
Chapter/Region: AKIC
Location: Val-des-Monts, Québec, Canada
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2009 STI
White

Default 09 STI pulling inside the curve when letting off throttle

Hi there,

I'm new to those STI's and long story short :

When in a curve and maintaining speed with more or less throttle, if I let off the gas pedal, the car pulls towards the inside of the curve... Regardless of I'm turning left or right...

Is it normal with the declaration settings in the diff? DCCD is set to auto without any "+" or "-" set.

Possible that I have an aftermarket diff without knowing (history of the car is not available as it a "stolen the recovered" car)?

Just concerned it might me something in the transmission or diffs...

Car was just aligned by reputable shop since installed coilovers.

Thanks
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Old 11-20-2021, 10:00 AM   #2
DrD
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Join Date: Aug 2002
Chapter/Region: SWIC
Location: Albuquerque, NM
Vehicle:
2012 Legacy 2.5GT
Ice Silver Metallic

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lift-off or snap oversteer is pretty common - haven't driven an STi to see how different it is than other cars, though. For the DCCD, maybe more forward bias would help? Also, not quickly lifting off the throttle on corners helps, too...
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Old 11-21-2021, 10:29 AM   #3
Rexy18
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Double post
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Old 11-21-2021, 10:29 AM   #4
Rexy18
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I have same issue. Pulls only when rolling off throttle or brakes. But i also have a bad wheel bearing i suspect due to the noise i hear at 45-50 and most pronounced at 60-65mph. Today i will attempt to replace the front R bearing hub with the hub i took off the front L yesterday when i installed a new bearing hub there. It did not change the noise at all.

I hit a pot hole on hwy months ago and it was brutal. It only ended up ruining my front R tire (bubble on side/edge), or so i thought. Now i suspect it killed my bearing. I just got around to realizing/hearing the hum.

And then it may not be the bearing at all thats pulling but something bent? Or else? Will post back to let you know how it goes.
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Old 11-21-2021, 11:30 AM   #5
etsola
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2009 STI
White

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Alright, thanks for the input guys
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Old 11-24-2021, 10:23 PM   #6
frankr2994
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This is almost always caused by something in the suspension moving. alignment may be dead on until your in decel. check all your bushings very close. Another thing you can try If you want to rule out say a tight bearing or brakes dragging is to pop it in neutral going through a turn when you lift off the gas. with no drivetrain decel happening the suspension should stay neutral. If you have something physically binding and dragging you to the side it will still be there. With your scenario I'd be money that something in the suspension has a little too much movement going on. If you can't find anything have a friend watch your wheels as you roll back and forth getting on the brakes. watch for a wheel to have excessive movement as you stop. doesn't have to be a blown out bushing to cause a problem.
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Old 11-25-2021, 10:29 AM   #7
etsola
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Location: Val-des-Monts, Québec, Canada
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2009 STI
White

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Good idea. I'll try that
Thanks
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