Yesterday my tuned and deleted 6.7L Cummins with Suncoast stage 2 trans started falling on its face under WOT load.
It usually drives and has good power under normal throttle conditions.
Makes a boost to 28 lbs.
It seems to fall on its face around 2500 rpm under WOT.
I replaced my fuel filters yesterday and did an oil change for the hell of it.
Nothing, I cleaned my aftermarket air filter last month.
I also replaced the fuel rail pressure relief valve yesterday, as I read on some forums that may be the issue.
The truck has 184,xxx miles.
Can glow plugs cause this?
I've never replaced them.
I am just praying it's not CP3.
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