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Re: Switchin to E-85
His filter was full of dirt and the main filtering screen was deformed some. The whole internal and screen design of the K&N fuel filter seems a bit cheap compared to something like the Aeromotive units. Even at 13psi it was leaning out too much and I had to abort the runs. I wasn't getting any knock, but with how clogged that filter was it would have been very bad news on pump gas under boost. The misfires he was getting before under boost were probably from it being very lean. There is a good chance that the HG is somewhat blown, since it pushes coolant.
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