I have posted about this particular issue in past - modifying the suspension of ITR producing on-gas push (or exit push) problem. Either my car is somehow very unique or nobody else has experience this or nobody realizes this occurs or... maybe others are somehow eliminating this problem. Or maybe my LSD is busted (though it works perfectly when car is stock).

In any event, I just got done unmodifying my ITR by unlowering it (18 mm), ditching the 15x7, +45 rims and 25 mm rear bar. Sole reason I unmodded was this horrific on-gas push problem (car was perfectly balanced in all other cornering phases). First came the unlowering and the push problem got better. Then went the rear bar and the push problem got better, then the wheels and the push problem disappeared...

My theory on this is as follows - the problem was the result of the LSD locking up more than 'usual' because the it was very much like having a locked diff - both front wheels spun in the corner and the car went dead straight. Furthermore, each of my mods transfers weight from the outside front wheel to the inside front wheel. This allows the inside front to carry more torque than 'stock'. This, then messes with the LSD torque-biasing ratio, which is designed for the stock car setup.

I know the mods caused the LSD to lock, what I want to know is why doesn't everybody with a modded ITR (or other modded car w/LSD) have a similar problem ??? Is there some magic way to 'counter' this (other than removing the LSD) ? Thanks.

 

Soften the front shocks for power-on understeer

 

What I found is that stiffening front rebound helps the on-gas push very slightly. Perhaps the reason = it is transferring weight from inside front to outside front... Again, this is not a 'typical' push scenario because the root cause is LSD lockup rather than traditional tire traction ratios.

 

sure you're driving the car properly???

I always dic around with driving types to see how the car reacts. When my ITR was lowered with Apex N1 coilovers and ES100's...it pushed HORRIBLY on throttle. Went back to Buddy Club Dampers with 500 fr 550 rr and 215 45 16 Azenis and the problem disappeared.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Evs-One &raquo;</TD></TR><TR><TD CLASS="quote">ES100's...it pushed HORRIBLY on throttle. Went back to ...Azenis and the problem disappeared.</TD></TR></TABLE>

I found the same to be true.

Glad you're back to stock Dave.

Now get some R-comps and join us!

 

Odd, I'm running 1000f/900r with stock swaybars on my R. No power on push for me. Might have something to do with the monster 275 Hoosiers on the front axle though...

 

Sounds like a tire or alignment problem to me.

The OEM LSD isn't aggressive enough to behave like a 2-way diff, nor is it even close to being a 'locker'.

Personally, I think you're barking up the wrong tree with your push problem.