Originally Posted by
oldford
Yura, It's not fair to blame the chip or it's tuner for the change in AFR after mounting a different exhaust and a different exhaust manifold. The only one to blame is you, because you changed the exhaust and the manifold.
No chip for a Weber-Marelli computer can be setup to cope with exhausts ranging from 60 to 80 mm. It works either with a 60 mm exhaust or it works with a 80 mm exhaust.
Get your chipped remapped by somebody who knows what he is doing.
I don't have problems with this chip, mate
. after changing manifold and exhaist system boost don't drop at hi revs - its good. AFR 12.3-12.5 is good too(I can adjust it a little by fuel pressure settings), no problems. In my country I don't have any Weber-Marelli tuner. So in future I will swap Weber-Marelli ECU and put GT2876.63 or some of the GT30 - I don't have onother choise - very bad that MSD and other tuners don't have chip for Garrett GT turbos...
((((