I have the stage 2 on my 335i and it has some delay if you are not brake boosting. Now, my 335i is much straight line faster than my 1M.
I have no plans to change the boost on the 1M. I can't get all the power to the ground with 295 Hoosiers, so adding more power is just not this car's issue.
Thanks to: Hixson BMW, Race-Keeper, Koni, BimmerHaus, & Hoosier
2012 SUMMER NATIONALS SCCA PRO-SOLO BONUS CHALLENGE WINNER
2012 SUMMER NATIONALS SCCA PRO-SOLO A STOCK CHAMPION
2012 SCCA DIXIE A STOCK CHAMPION