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      01-07-2014, 10:56 AM   #37
Racer20
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Drives: F80 M3, 228i THP, E46 ZHP
Join Date: May 2009
Location: Ann Arbor, MI

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It's hard to offer a very good answer to specific questions like these without having driven the system to know what's really causing the poor performance. The best I can say is that a slightly stiffer spring (5-10% in rate, <1/2" drop) or 1-2mm larger in sta-bar diameter may help the situation, without sacrificing ride too much, but anything larger than that will likely put the car too far outside the model's parameters, and result in some tradeoffs. Your best bet would be to keep the front to rear spring/bar rate ratio of the stock system.

Sorry I can't be more specific, there's just no DHP cars anywhere near me to test drive.
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