Quote:
Originally Posted by 95 imp
Also, FWIW, I would check your knock sensors and see if they are pulling timing. If they are, raise the octane until they no longer hear knock. Too much octane is almost as bad as not enough. With my 95 LT1, it was recommended @ 87o. I had to run around 90o to keep it quiet.
Also like King said, 91 already has some alcohol on it. Try to blend in E and you're out of the ecm tables. It really needs the sensor to optimize it. And I'd be willing to bet running E would void the warranty (since it is over 15%) a lot easier than toluene/xylene.
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It really depends on the area you are in the USA at, our 91 doesnt have Ethanol in it. Only our 87 comes in 87 pure and 87 E10. It would be hard for the dealer to prove Ethanol caused any issues, that isnt a simple or easy test to run and since any grade fuel can contain E10 the automobile manufactures have to accept that as well.
For us in Oklahoma, Xylene and Toulene are pretty hard to find and purchase due to our meth laws.
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