Originally Posted by messi
just buy one.. anyone of helix, ets, ER, AMS will give you great results on a daily driver. I think ETS you can install without removing the front bumper. I had to remove my front bumper for the ER and i have had no regrets thus far. Car definitely feels better with a tune. You have a tune right?
Yeahh I have jb4 with the afe dci
08 335xi e92, JB4 g5, Afe s2 DCI/scoops, AR catless dps, Helix FMIC, H&R sport springs