These are your headers. It doesn’t look like putting a bung on the exhaust, red circle, is going to make any difference in reading for a gauge. Also, your tuner should have a fail safe for AFR! I don’t think you’re going to be able to rely on looking at, reading, and stopping a lean condition. At your power levels, it’s enough to just keep an eye out in front of the car and keeping it pointing in the right direction.
__________________
618 WHP.452 WTQ.4" Python Intake.15 psi.e50.Topgunz SC.SOHO Tune.S1SE.STG 4 Clutch.Motordyne LTH/Test Pipes/Exhaust.485 Pump.1050x
|