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Old 02-23-2008, 01:51 PM   #18
Dr. Flyview
Formerly Flav_cool
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Location: Toronto
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Originally Posted by Flav_cool View Post
I gotta use 94 cause of the chip, but I hate to think that I'm getting 10%+ less fuel economy b/c of the ethanol

MarkD actually told me I can try running 91 and if it works (no pinging), it should be fine. Now my car has a knock sensor so I don't think it would ever actually ping. On my old engine I was using 91 no problem with the chip. The one time I tried it on my new car with the chip, it was sputtering a bit (reducing power?) but I believe it was petro canada 91, which people have said is shit.
Jay, can you respond to this please?

Other than fuel economy, what's bad about ethanol being present?

1998 BMW 328is - summer
1993 BMW 525i - daily
1994 BMW 325i - sold
1992 BMW 325i - gone
1988 Mercedes Benz 190E 2.3-8V -

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