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  1. macro820

    What is good PEA based cleaner for 2023.

    Recently had a rough idle in my 21 Mazda3 turbo, was sure it was carbon on valves or spark plugs but went ahead and put in some gumout all in one and by half way though the tank the idle went smooth! Also doing better during transitions between loads/revs. I think this will really help with...
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