Sway bars adjustment...
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I did 300kms with my M3e92 and family today, well sprung but far smoother in comparison.
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Joined: Dec 2006
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From: Palos Verdes
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I ran 70kms yesterday, I'm really happy with those last mods, even with the only rear bar the body roll is far much better controlled and the feeling at driving great.
I tryed in a "desert corner" to provoc the car and it is still understeering.
I will bolt the front one soon but difficult to imagine it will be far better, really the only rear bar setted soft already changes the car!
About the brakes, they begin to be bedded, I didn't performed longer than 5' braking but the initial bite is outsdanding, the braking power too and no squeal.
I will compare with my buddy's PCCB feeling soon, but the term "stopped by the hand of god" could be used too I believe!
Little synthesis: I'm more used to spend in power mods than in chassis mods, but you can profit 100% chassis improvements each time you drive the car while when you add power you only feel it in few circonstances, so in terms of "pleasure rentability" it is pretty nice.
P.
I tryed in a "desert corner" to provoc the car and it is still understeering.
I will bolt the front one soon but difficult to imagine it will be far better, really the only rear bar setted soft already changes the car!
About the brakes, they begin to be bedded, I didn't performed longer than 5' braking but the initial bite is outsdanding, the braking power too and no squeal.
I will compare with my buddy's PCCB feeling soon, but the term "stopped by the hand of god" could be used too I believe!
Little synthesis: I'm more used to spend in power mods than in chassis mods, but you can profit 100% chassis improvements each time you drive the car while when you add power you only feel it in few circonstances, so in terms of "pleasure rentability" it is pretty nice.
P.
1. Primarily, increase front negative camber to max value of minus 1.1 - very important to do this and if you haven't done this already, you should, IMHO.
2. Soft front, stiff rear on the sway bar. Stiff rear bar makes my car quite uncomfortable and the rear starts to become too jumpy happy - but we have different setup so yours might work out fine.
3. Soft front, stiff rear on the tire, by adjusting tire pressure: not too much adjustment of course as this affects the tire performance, but something like minus 1 to 2 in front is within reasons IMHO.
4. Eventually if none of the above makes you happy then you'll have to move to coilover (which allows more flexibility in springs setup) and front camber plate (which allows more front negative camber - but beware straight-line traction/braking will then suffer as tires contact surface is compromised in straight-line).
PCCB: Yes the "initial bite" is what's responsible for the "hands of God" sensation. But stopping distance is same and your brake is very nice as well. PCCB's bite is easier felt when you have PCCB for a few weeks then all of a sudden you switch to Big Red.
Power and suspension: My car is a humble stage 2 ECU tune, but especially when you have these monster high power cars, then stiffer suspensions are definitely needed. With high power comes higher speed and bigger weight transfer both side to side (body roll) and front to back (acceleration and braking), and the only way to control front/back weight transfer is stiffer spring.
Have fun.
Last edited by cannga; Nov 4, 2012 at 11:50 AM.
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Thxs Can, I will keep a few weeks this setup to impregnate myself of the car response.
A little understeering is pretty safe on open roads, so it is quite ok.
My tire pressures are 2.2 front/2.4rear cold, about + 0.3/4 when hot.
Sincerely if I try to graduate my car handling, it comes from 12/20 to 15/20 with this lonely rear bar soft setted while lowering springs improved greatly the look but not the handling at all...
I will drive the car next WE and bed 100% the brakes to compare with PCCBs...
A little understeering is pretty safe on open roads, so it is quite ok.
My tire pressures are 2.2 front/2.4rear cold, about + 0.3/4 when hot.
Sincerely if I try to graduate my car handling, it comes from 12/20 to 15/20 with this lonely rear bar soft setted while lowering springs improved greatly the look but not the handling at all...
I will drive the car next WE and bed 100% the brakes to compare with PCCBs...
