Re: engine revving in cycles
What year of H2 do you have? If you have drive by wire throttle body it may just be a dirty throttle body bore and plate. Could also be leaking intake gaskets seeing its a dry intake it will suck in unmetered air(vacuum leak) until it warms up enough to seal the leak
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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