Boost Problem please help!!!!!!

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02-06-2017, 11:54 PM

Bennybugga

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Boost Problem please help!!!!!!

Car whistles really loud like theres a boost leak. Leak tested it and it held pressure, but it wont get past 10 psi car normally throws 23 psi any ideas on what could be the issue

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02-07-2017, 02:53 PM

ECaulk

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Codes?

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02-07-2017, 04:24 PM

Bennybugga

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I have a tps code that comes and goes as it pleases but other than that no codes

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02-07-2017, 05:09 PM

rnjmur

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Possibly a wastegate/BPV issue. Normally should see a code though.

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02-07-2017, 05:17 PM

ECaulk

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Miles, tune, mods. Any extra information that can help

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02-07-2017, 05:55 PM

Bennybugga

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96k fbo and tuned stock turbo also have a hks bov

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02-07-2017, 05:57 PM

ECaulk

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bov after maf? (maf in stock location?)

Did you make sure the bov is sealing correctly? I know those can be a source of leaks.

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02-07-2017, 06:04 PM

Bennybugga

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Yea maf in stock position. I did a boost leak test tested good so i was guessing the bov was sealing fine. When im driving you can just hear what sounds like a big leak

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02-07-2017, 06:28 PM

63 Nova SS

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So it's whistling and you don't have a boost leak yet it can only hold 10psi? Sure you don't have a charge pipe coupler loose or a map sensor? Does it feel like it's only boosting 10psi?

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02-07-2017, 06:32 PM

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Bennybugga

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Yea it does.. i just tried to do a pull and half way through i lost all power and my bov went off

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02-07-2017, 09:48 PM

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ECaulk

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So is your bov going off at 10psi?

I'd check your vacuum lines to the wastegate housing, iirc wastegate spring is near 10psi

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02-07-2017, 10:14 PM

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Bennybugga

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Thanks man i appreciate your feedback! ill check that tomorrow, and let you know how that goes

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02-10-2017, 11:23 AM

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SChassisMostly

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Don't you need to move your MAF if you run a BOV to a blow through design? Could that maybe cause an issue? Some intercooler pipes, like ZZP's, relocate the MAF and then tune for the BOV. I'm still new at this.

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02-11-2017, 04:05 PM

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Bennybugga

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I checked everything it looks fine. Idk what to check anymore intercooler and piping looks fine. Vacuum lines look fine passed leak test. Any ideas maf maybe but theres no code

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