Originally Posted by blk335xi
Which would be less detectable by dealers - JB4 of Cobb AP? Assuming both were taken off the car for dealer visits?
I like the Cobb, but the JB4 seems to have it beat for features.
Cobb (experience on n54 with my 335 and now 1m) is much smoother than piggybacks and is a superior and safer form of tuning.
The in dash gauge features are gimmicky IMO. Get a p3 guage if you really want real time data.
Uninstalled cobb is not detectable.