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15 Posts
Discussion Starter · #1 ·
hey forum,

recently i had a tubular gt40 intake, gt40x heads, and ford performance headers installed onto my 1993 5.0, and as soon as i got the car back it was having an issue, whenever i went WOT the car just lost power and will backfire near 2500 rpm.

I've already checked that the spark plugs are correctly gapped (motorcraft sp-447 at .054) and timing (10) so I'm not too sure whats causing this now.

could it be the stock throttle body and injectors causing this or could it be the MAF possibly need to be cleaned? Thank you in advance for any and all help!

**i should also note that the car was NOT having any issues prior to the install**
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