Yea 53 at idle at the rail.
Yea 53 at idle at the rail.
I'd start with checking the plug gaps, fuel pressure at WOT, fuel filter(this is easy to forget about), timing and exhaust. A melted/backed up cat converter will do this. I had it happen in my MX6. Ran good until I went over 1/4 throttle, then acted like it was running out of fuel. When I pulled the cat it looked like a bunch of moon rocks glued together.
Fuel filter is being replaced this week thought of that to. Plug gaps all good no cat it has a 3 inch all the way back. I have to get a fuel pressure gauge for the interior.
I had a pump once that would only act up after 5-10 mins of hard use. Let it sit for 10 mins and all was normal again. My assumption was that it was overheating.
My vote is for fuel pump too. You neeed to monitor fuel pressure as it is stumbling.
So I have been doing some experimenting. Put a good boost gauge on it to. 2nd gear wot it will kill it will also max the factory boost gauge, good boost gauge will hit 22. Third gear will not kill the car at wot but will hit 22 psi to. Same with 4 th gear. Now I have a oil leak.....
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