#8 cylinder plug issues-no tuner!
#1
#8 cylinder plug issues-no tuner!
Has anyone had trouble with #8 cylinder spark plug going on their cars with no tuners? My Mustang GT is only two years old with 10,300 miles on it and it started jerking and hesitating. Took it to Ford and was told about #8 cylinder. I only have Borla pipes and catbacks on it now and a CAI. Was going to get a tuner and a bigger throttle body until this happened. Now I am scared to add the mods because this happening. Mentioned to my mechanic about putting on a bigger throttle body and he said no matter what you need a tuner to get the performance out of it, but then he goes, then Ford frowns on that (tuner and warranty). What to do!
#4
Stock untuned cars have had #8 cylinder issues. It's actually a flaw in the stock tune. If your CAI was a no tune CAI that isn't the problem other than you wasted money on it. Just like a different throttle body is a waste of money. Yes a tune will void your drivetrain warranty.
#5
Yep running lean
Yes, the mechanic said it was running to lean. He said to get the tuner because of the modular motorsport racing CAI and Borla catbacks. The #8 was effected, just the plug went bad. Misfiring. He is a really good guy and did it under warranty since I only have 10,500 miles on the car. He told me to get the BBK 85 mm throttle body later. I don't race it, just want some more horsepower because of the newer ones have more than the 2012 and see if I can get a bit better gas mileage, when I keep my foot out of it. Thanks.
#6
6th Gear Member
The catbacks don't require a tune. The TB is useless w/o other supporting mods. You might or might not get better gas mileage with a tune but even if you do get a gain it'll be minor and the break-even point between fuel savings and the cost of the tunes will likely be a few years. Regardless, a tune is worth it for the performance gains, period.
#7
The catbacks don't require a tune. The TB is useless w/o other supporting mods. You might or might not get better gas mileage with a tune but even if you do get a gain it'll be minor and the break-even point between fuel savings and the cost of the tunes will likely be a few years. Regardless, a tune is worth it for the performance gains, period.
#8
Well, the catbacks were an issue though and the CAI. When he did the diagnositics on my car, it showed 11 misfirings with the #8 cylinder and it also showed the modifications.... My mechanic told me to get the tune because I will continue having the problems otherwise. Under Ford TSB 11-7-7 he could of said he could not warranty, but since I am a female and honest with him he fixed it. If he says to get the tune, I am getting the tune for street and performance. Thanks for your input!
#9
Well, the catbacks were an issue though and the CAI. When he did the diagnositics on my car, it showed 11 misfirings with the #8 cylinder and it also showed the modifications.... My mechanic told me to get the tune because I will continue having the problems otherwise. Under Ford TSB 11-7-7 he could of said he could not warranty, but since I am a female and honest with him he fixed it. If he says to get the tune, I am getting the tune for street and performance. Thanks for your input!
#10
Your mechanic clearly has no clue and is steering you in the wrong direction. The catback could not have caused any problems regarding the misfires. The CAI is debatable. But if you're having problems now DO NOT TUNE IT! You run the risk of some major financial future problems. Is your mechanic a Ford tech working for a Ford dealer?
By the way, even though I appreciate your input, are you a mechanic?