G'day lads
Has anyone ever made o2 sensor related changes in their tune, after having extractors fitted? In particular with an na v8 (bf xr8)
Since changing from factory manifolds to Pacemaker tri-y's and more recently, changing those to Hurricane 4 into 1's, I've had a "semi rough" idle and when codes come up, it's always p0133 and p0153 (circuit response slow). Bumping the desired idle rpm up to 650ish helps but I can still feel it isn't as smooth as it should be. I'm guessing the location of the bungs is considerably back from where the factory ones are, moreso with the hurricanes and am wondering if the computer needs a delay or bias adjustment for the o2's to suit?
Other than the dodgy idle, performance seems fine. The car was tuned by a shop when the pacemeakers went in but I can see from comparison to a stock xr8 file, o2 stuff was not altered.
Any advice much appreciated.
Cheers