help!!! when i am accelerating i build up to 10-12 psi and then it just trails off between 8-10 and wont build up past that no matter what i do. which is killing my acceleration. is my wastgate stuck open? how do i check it? this sucks being able to basically only quickly accelerate to 40 then crawl from there. the only DTC code i have thrown is one that said " DPF not performing effeciently" which i think means i need to delete it . but i hope its not related.
help!!! when i am accelerating i build up to 10-12 psi and then it just trails off between 8-10 and wont build up past that no matter what i do. which is killing my acceleration. is my wastgate stuck open? how do i check it? this sucks being able to basically only quickly accelerate to 40 then crawl from there. the only DTC code i have thrown is one that said " DPF not performing effeciently" which i think means i need to delete it . but i hope its not related.
Have you inspected for boost and exhaust leaks?
Have you checked ebp, map, baro rationality with key on engine off? They should all be within 1psi of each other
Just watched the video. Could be the turbo. Maf readings may give us more insight.
If maf is low at wot, I'd pull the air cleaner duct and have a look at the compressor wheel. If feels ok, pull the intake horseshoe to gain access to the high pressure turbo compressor and check that one.
Unfortunately, it's usually the high pressure turbo that goes.
Either that, or you have a bad exhaust leak. They can sound like that too
45g/sec? Engine warm?
I usually see about 30. It's not really idle that you wanna see. You wanna see how much air you're pulling driving. Like I said tho, I worry about causing damage if that turbo is coming apart. Pieces could end up in the engine.
I think I would inspect that first just to be on the safe side. It's gonna involve pulling the intake horseshoe off, but an ounce of prevention is worth more than a pound of cure
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