Correct! Don't run E30 Race without the correct mod. FMIC is essential, so is a good intake for all that boost. DPs are also required.
you can run the correct map for your mod, go aggressive setting on 91 by mixing ethanol. You will also have to edit the fuel scalar in ATR to match ethanol content. your car will be happy, and so will you
SOLD --'07 E90 335i, PTF COBB E50, HFS4, ER CP, ETS 7", AA DP, Vishnu Exhaust, DCI, ACT, Nitto Nt555
'10 E92 335i M, 6MT COBB v3, ER IC, ER CP, VRSF DP, Fuel-it st2
installing soon: Mfactory LSD, , powerflex subrframe bushings