My fuel useage results are only bases on 350 miles of driving & not over 65 mph. I did a relative compression test and all cylinder are equal. All 02 senors were changed , MAF, T-body & IAC were cleaned. Found a leaky fuel injector & system pressure is below spec's. With new injectors I will update the results.
The hot/cold intake mod might use parts from a carb air cleaner.
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