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Hey Jeff, I swapped the MAF for this run. I also plugged the vac line coming from EVAP purge solenoid valve(not sure who reccomended that). I dont hear any type of hissing. I sprayed some carb and choke cleaner around pcv valve, brake booster, throttle body with no change in idle.
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94 Trans am 25th anniversary
86 Buick Regal T-type
73 camaro 454/T56 work in progress.
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