Im buying a down pipe amd im thinking of putting on a stainless steel center section "just pipe, no cats" and keeping the stock muffler"money reasons". Would this be safe without replacing the ecu. The only other mod is a pettit coldair induction.

 

i have a DP, MP and intake, and my air fuel ration seems to be fine, couldn't hurt for a new ecu thuogh...

 

i'm running intake, dp, catback, ypipe on the factory ecu. definately time to upgrade the computer but my af ratio seems to be alright too. i'm still running pretty rich actually....just smell my exhaust