Backfiring issues
#1
Backfiring issues
Ok, I've got a 2007 Mustang GT, 5spd manual. Current mods: C&L CAI, Corsa Exhaust, Motoblue UDPs, and a 91 octane tune from Brenspeed.
In 2nd gear at 5,000rpm and in 3rd through 5th at 4,000rpm. The car starts to backfire really bad, and the car stops making power. I took it to the dealer. They told me it was an air to fuel problem, and that it should stop if i put the stock intake back on (this was before the tune). I put it back on, and it still does it. They look at it and replace the spark plugs. It works fine for a week, then it does it again. I thought it could also be a timing issue, so I got the tune. I programmed the car with it, and the car still backfires. I deprogram, and take it back to the dealer. This time they say it was a problem with the MAF sensor. So they replace it. I get it back, and it still backfires with stock tune and stock intake. Any thoughts on what could be the problem? Btw, the car only has a little over 8,500 miles on it.
In 2nd gear at 5,000rpm and in 3rd through 5th at 4,000rpm. The car starts to backfire really bad, and the car stops making power. I took it to the dealer. They told me it was an air to fuel problem, and that it should stop if i put the stock intake back on (this was before the tune). I put it back on, and it still does it. They look at it and replace the spark plugs. It works fine for a week, then it does it again. I thought it could also be a timing issue, so I got the tune. I programmed the car with it, and the car still backfires. I deprogram, and take it back to the dealer. This time they say it was a problem with the MAF sensor. So they replace it. I get it back, and it still backfires with stock tune and stock intake. Any thoughts on what could be the problem? Btw, the car only has a little over 8,500 miles on it.