[ArmnStig]

     Featured on BIMMERPOST.com

Currently running a stage 2 tune with a catless down pipe. The car is definitely more lively but I was looking at other modifications and came across a turbo upgrade. I wanted to know everyone's thoughts on a pure turbo upgrade on the z4. Specifically the B48, but any opinion on the B58 is welcome. Thanks!

[delita1]

Originally Posted by ArmnStig

Currently running a stage 2 tune with a catless down pipe. The car is definitely more lively but I was looking at other modifications and came across a turbo upgrade. I wanted to know everyone's thoughts on a pure turbo upgrade on the z4. Specifically the B48, but any opinion on the B58 is welcome. Thanks!

Best bet would be check the supramkv forums. Plenty of people have done it there on the B58 at least. When it comes to tuning options with the B58 I go straight to the Supra forums...not nearly as many Z4 tuners here.

[gasnet]

I would just go to 3 series G20 forum. Posts here are anemic