S4 running pig-rich

[jerry]

As an S4 owner of 14 years the 1st thing to do is a full TPS reset to 152mv on fully closed throttle with the throttle adjuster srewed open so the stops are resting on open slide reset,, and balance

thats before you try anything else

[Dukedesmo]

Originally Posted by jerry

As an S4 owner of 14 years the 1st thing to do is a full TPS reset to 152mv on fully closed throttle with the throttle adjuster srewed open so the stops are resting on open slide reset,, and balance

thats before you try anything else

Not familiar with the S4 injection system but I have a 916 which is basically the same engine and so probably uses the same setup? and this would definitely be where I would start.

I had a broken screw on the TPS bracket so it was being held with just one and moving about. It ran really badly, popping, misfiring, stalling and wouldn't idle until I repaired and reset it.