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      11-08-2012, 08:31 PM   #11
tphss
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Drives: 2013 M3 ESS
Join Date: Oct 2012
Location: Miami / Atlanta

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Quote:
Originally Posted by zztwinturbozz View Post
I have Cobb stage 1 sport on otherwise stock XI. Very choppy and surges. Every car is different though!
Can you elaborate please? What year is your car? Auto/stick?
What do you mean choppy? The car is bogging, doesn't accelerate smooth?
Do you still have it installed or you removed it?

I was pretty set on ordering this tomorrow until your post.