What grade fuel do you tune with?
10-27-2002, 01:50 AM
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What grade fuel do you tune with?
I've been filling my car with 92 octane, and that's what I've been tuning with too, but it's getting close to a buck-fifty/gal. and now I'm wondering if I should have been tuning with a lower grade. What do y'all put in your cars, and does it really matter?
10-27-2002, 09:58 AM
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It depends on your compression level. Sure you can use lower octane gas, then you'll have to remove a bunch of timing to keep it from pinging. And with less timing, you might get worse gas mileage. So its a toss-up. I always use premium fuel, but I have a 10.3:1 compression engine.
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