Is it possible to run long tube headers without a new tune?
I have a Steeda CAI installed with a BBK 90mm throttle body. Tomorrow I am having a shop install a full exhaust- Kooks long tube headers and Magnaflow competition catback with the Kooks high-flow catted x-pipe. I have a 91 octane tune for just the intake as of right now, is it safe to drive with the full exhaust without a custom tune? Should I just turn of the O2's?