Quote:
Originally Posted by dj2020
I'm thinking of doing this soon and Shawn Church says it's no problem for him doing a 91/e85 flex fuel tune. I'll probably run e85 full time but he says he can make it safe when on 91 for road trips.
He also said something interesting that I never thought of, which is to add a wastegate to the intake tube to limit your boost to 9psi on the HBP. That would be another way of making the HBP safer for 91 octane. I did some research and it looks like a lot of domestic muscle cars on centrifugal SCs will run a higher boost pulley but limit the actual boost at the top end with a wastegate. That way you'll have higher boost levels at a lower rpm. Just thought I'd share and have a discussion.
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This is something CSG and Shawn have experience with; it's been around for years, even on this platform
