[s-cars] anyone besides me tempted to pump regular

[RM]

I've done it on 89 octane once.... once. When i first bought my 94 UrS4, i 
chipped it and then had a trip to make that required a long distance on the 
turnpike. I wasn't too pleased. Yes, it ran fine, but when i needed to boost 
to make a lengthy pass, the engine hesitated and floundered enough that i 
was concerned. I truely think that mid-grade is acceptable with stock boost, 
even chipped. But don't lean on the loud pedal too long. You do stand to 
ruin a good head and pistons if it's warm out and your knock sensors are 
slow to respond. But for average highway driving, you should be OK. also 
keep in mind that the same 89 octane fuel her ein Pa. isn't the same for 
other parts of the country where they have different additives, or lack 
thereof.

rolf



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