It appears to be coming from the header to downpipe connection? Could my cat have melted and blocked cause it feels like anything above 3k is where the lag is. I may try to pull it tomorrow morning and see if it looks free and clear.
I tested all the variable intake valves and went over all pressure and vacuum hoses, and they all worked and were in good condition.
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2004 Mazda6 V6 5-spd - still waiting on money for a motor
1991 Mazda RX7 NA 5-spd - my new DD with 145,000 miles
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