Re: rpm's surging at around 30-50 mph! HELP, Is it the Shi@Ty GAS!
I had this same problem and it turned out to be crappy fuel...try putting some Techron additive in the tank and switch to Chevron, Mobil or shell that have the additives in them. It may take a tank or two to correct the problem. It's worth a try.
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2003 H2 Hummer, Yellow,Polished Whipple Supercharged, Dynatech long tube headers, catback,18\" Ambush w/Toyo MT\'s,lots of goodies!
Y2K Corvette Millennium Yellow Convert/Blk/Blk, B&B headers, B&B Tri-Flo\'s, H-Tech MAG,GMS MAF, RM Racing TwinFlow.
1994 Chev Suburban Blown
1970 Trans Am balanced, blueprinted, ceramic headers, etc.
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