[4Hockey4]

I was going to add the Autowerkes Downpipe and ER charge to my 16' 235i with no tune.

Speed shop said probably good idea to get Stage 1 with the downpipe. Any reason this would be neccesary ? Get the more power part. (they are going to run dyno for air/fuel ratio wide open to make sure safe) Could the addl fuel requirements max out what the ECU is programmed to auto compensate ?

Still working on whether I get new 8" rims and 235's all the way around, or just add 225 PS4 to stock rims...either way on RFT's and not sure Stage 1 is good idea.

Any one run JUST a Fabspeed or Autowerkes catted downpipe only with any issues ?

Does a tune change anything if "not using" all the time ? fuel/air etc

Thanks for info