Recent content by markolson

That makes sense. If the PCM isn't trying to open the valves, it doesn't check to see if they actually open, so you should be good to go at low RPMs.

The PCM only retards the spark above about 3200 RPM. Below 3200 RPM you will not lose power due to stuck IMRC valves.

The main reason people want to delete the IMRCs is because the valves get gunked up and stick causing a DTC and retarded spark timing. They get tired of having to occasionally take them apart and clean them. Others have trouble finding parts (or don't want to pay) after a failure and need to...

I had reproduced the old IMRC delete relay circuit for 96 to 98 Mustang Cobras (which also works for 97-98 Mk 8s.) I was contacted by a guy with a 96 Mk 8 who asked if it could be used in a 96 Mk 8 with the IMRCs deleted. I figured out that it can't, but it is even easier to do in a 96 Mk 8...