Stock n54 not building over 5psi. Tried 2 different boost guage to make sure the first wasn't a faulty guage. Can't hear any audible leaks but haven't done a leak test. Any ideas on this?
5psi is base boost. It won't go past 5 psi if it detects any knock. Max stock boost is only 8psi
Ok thanks. I knew the max was 8psi, but did not know about the base 5psi.
.... if it's only hitting waste gate pressure then you either have a leak or a bad electronic boost control valve.
1997 328is - Megasquirt PNP, Holset HX35, Deka 80lb injectors, SPA T3, Precision PW39 WG, Synapse Synchronic BOV, DKM Organic Twin Disc Clutch, Innovate LC-2 W/B, Mishimoto Intercooler, Mishimoto Catch Can, Mishimoto Rad, Devils Own Meth, Porsche 911 calipers with E46 M3 rotors, Corsa Exhaust
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