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Boost Pressure
First off, I can't speak about the boost in my 337, as I own a normally aspirated one for specifically the reasons some of you are talking about. I just didn't want the hassle anymore. But I have experience, as my previous Navajo Panter was blown, as is my boat, so I know the drills.
1st, never give up on checking the exhaust side. You may have some obstruction or blowby reducing the exhaust velocity and subsequent rpms of the turbo.
2nd, use the one cost savings measure that twins actually have over our single engine wannabees, ie.. swap parts. If you think it's the intercooler, don't buy a new one, swap it out with the front. Same with the wastegate, etc. It the problem changes with the swap, you've identified the part, if not, leave it alone.
3rd. Dont change anything untill you've swapped out your guages. My MAP and RPM's are all over the place at times as well (typically on my front engine, but it isn't a blower doing it, it's the guages.
Just some ideas/R
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Hybrid Mode
