question about my afr after new turbo set up

b6gtxawd

Member
:
2003.5 MSP
quick question. i just installed a new gt28rs and corksport dp, took it out for a little putt around the block and noticed that if i started to go into boost my afr would shoot up to like 14 or 15. i have everything hooked up except my downpipe to cat.

will having my dp detached from my cat make my afr read lean when going into boost, seeing as it wouldnt be getting a proper reading? just want to make sure i dont have to change my map on the ssafc, and its just from the open dp.
 
your pushing a little more volume with less restriction so yes you may need to readjust your map
 
Back