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gday i just bought a vlt its got a front mount exhuast it had a boost controller all ready connected and it was running 7psi i winded it up to 10psi but when i give it to her it goes up to 10 and dies down to 6-7psi why?? how can i fix it?? thnaks
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Hmmm boost spike.. sounds like either one end or the other is blocked.
possible causes;
1. Check the air cleaner element.
2. Check if the catalytic convertor is not blocked or exhaust squashed.
3. A previous genious may have shortened the wastegate actuator. See if its been wound inwards making it shorter or welded it at a different length other than stock.
nothing else comes to mind, other than the tune if it has an aftermarket ECU running the engine.
post a photo of the front mount exhaust.. haven't seen one before!!
Some original photos have not been recovered yet.
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cracked exhaust housing around the waste gate does this aswell.
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Definitely sounds waste gate related.
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thanks for the help fellas ill check wastegate tomoz
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Check for movement in the shaft & actuator.
Also check & see if any of the piping(hose) is cracked or split that runs to the actuator.
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Would boost to the moon if it was cracked or split
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