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Looking for Help with an SBD 500 Kit that Keeps Overboosting
So I'm having some issues with a SBD 500X kit that I got a while back. I paid a local shop who is pretty well known for 86 tuning to have it and a Delicious tuning E85 kit installed and tuned and after a month of it being fiddled with and tweaked they couldn't figure it out. It runs fine below 5500 RPM, but around or above that it lurches and throws a check engine light from the MAP sensor. For some reason it's reading 24 lbs of boost even though the thing is only tuned for between 4 and 7 lbs. It doesn't feel like 24lbs of boost either. The guy at the shop said the MAP should max at 19 lbs, so it's weird that it's even able to read up to 24 lbs. They've swapped MAP sensors, MAF sensors, taken the boost controller out, supposedly swapped the waste gate, and every time it's still reading overboost. They brought Ecutek in and even they have no idea so far.
It's still tuned for 91 octane if that helps anything.
Thanks guys
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