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88 BII keeps giving 77 code


Yeah its the stock throttle body. Since I bumped the timing it is still running great. Only 1 full tank of gas thru it and it equated to 21.1 mpg. It still wants to hold back some until it get up to temp, after that it runs like a champ. Also Im running 235 series tires so the mileage is a tad better than calculated. Im gonna drive it easy and see how good the mileage can get.
 

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