Originally Posted by HD81
What kind of octane booster? I take it you can't use octane booster if you have no mods? Is that correct? Sorry but I'm a noob with the octane booster and mods.
dont waste money on octane boosters.
Current: 2013 335i 6mt msport
BMS Clutch Stop, JB4, Slightly Modified OEM Muffler, ER Downpipe
Past: 2011 335i coupe
369 whp/444 torque. (Procede
, Custom Turboback Exhaust, BMS Intake, ER FMIC)