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Sputtering & back-firing
A new thing I have discovered with my car is it holds no power above 3k RPM's. It will buck & backfire, and not do anything. The problem is its inconsistant. The past few days, if I let the car warm up properly, its fine. But if its running cold, or too hot, it does this ****. And today it got to the point where the car doesn't even want to drive. It started constantly backfiring.
Its a MadZ28 tune for 91+ octane, and so far Ive only gone to one gas station for there Ultimate 93. Any suggestions?
Tommorow Im going to check and change my spark plugs & possibly even the wires. If it continues tommorow, are there any suggestions to what it could be? Bad mass air sensor? Poor tune?
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