Intermittent miss up to 2k and idle when warm NA-T

[Travis89Turbo]

Originally Posted by pwpanas

How is your valve shim clearance?

True. I've seen a VERY badly pitted head from running higher boost on pump gas. In fact, (among other damage) it punched right through from one combustion chamber to the next! Lots of welding and machining was required to get that head back in shape.

I checked valve shim clearance and all were to the lower side of the limits per FSM.

Mileage is only 71,000. I purchased the car from an elderly man that was original owner. All factory service records.


I have an idea. Thinkin back a few post when I had pulled all my turbo stuff off and put the header on to determine which bank of cylinders was giving me trouble. I am wondering if its just the differential pressure between the rear bank that causes the ecu to go hay wire.

What if I weld an 02 bung pre turbo on one of the front bank cylinders to trick the ecu. I know this would cause 6 cyl. To run rich but it should keep the ecu out of lean mode. And the worse that could happen is I blow a motor that I am ready to pull out anyways.

Looking way back when I first bought my na header way before the turbo kit I noticed 6 cyl. Was not near as colorful (almost ss still) compared to the others. I think that has been a weak cyl. For a long time? But the turbo pushed it beyond the ecus threshold after the boost. It did run great and not skip a beat when I was running o2 on the front bank.