Originally Posted by HAILERS

On a TURBO car this can be overcome just by removing a single small vacuum hose located on the ACV itself.

Idle the engine til the engine is fully warmed up. Then go to the ACV. There is ONE small hose that sticks straight up. Look at the afr on the gauge then pull that hose off and plug the hose with a small bolt or something similar. The afr gauge will now read a much smaller figure, most likely a figure close to 13afr which is the true engine afr.

If it were a non turbo engine you'd just pull the blue plug off the relief solenod and get the same result. Pulling the blue plug off the relief solenoid will not work on a TURBO car for this application. ON a turbo car you have to pull the vacuum line on the ACV that sticks straight up.

The other two vacuum lines on the ACV stick straight out towards the fender and you don't do a thing to them.