Seems like a lot of 3v stangs do this, judging by my youtube exhaust video searches. Mine did it stock and with the American Thunder mufflers it's....uh...louder. Any way to make it stop?
Exhaust popping
- Thread starter HurricaneJesus
- Start date
-
Sponsors (?)
Thought I would clarify, this is on deceleration or when I rev it on the way down it'll pop. Usually on the way down between 2500rpm and 1200.
I'd be careful. I'll never be able to diagnose for sure unless I hear it first hand, but popping noise the way you're describing it could be something you might want to look into. Are you smelling any exhaust in the interior of the car? Is it loud, "gun shot" type noises, or is it more of a rumbling sound? Does your car seem "jerky" or "hesitant" when stepping on the gas? When you let off the gas, does the car slow down "faster" (assuming you have a manual)?
09s197gt
New Member
I have the same exhaust. I have the american thunder cat back. It pops when its cold and on deceleration, but its still sounds sexy. and everyone loves it
That sounds like what my car does with the CAI and brenspeed tune. I've been trying to figure it ouut. I posted about this last night. What's your experience with this?
Fortunately / Unfortunately, I have a lot of experience with this. However, all of mine came after supercharging. 1st time happened after getting my ride detailed for a car show. When the detailers were cleaning the engine bay, they flooded my Diablosport MAFia with water. Would start only to die. Only a hunch had us pull the MAFia apart...and water came pouring out. So, let it dry, put it back together, started driving away, and all I'm getting is gun shot-like noises on rpm and speed decel. After a while it started getting worse, to include all of the symptoms in my OP. I got with a mechanic muddy of mine and we started going through everything that could possibly cause some detonation, which is one of the main reasons for back-firing exhaust. Come to find out, one of my spark plugs unwound itself in the process. Tightened the plug back up and car was cured...until...
2nd time this happened was after a track event late summer last year. After I got home, same symptoms showed up and this time I knew exactly what it was. High revs, high speeds, heel-toeing, high temps. I knew it unwound my plugs. And what was worse, I started getting symptoms BAD the night before heading back to the track. I had the wrong tools to screw my plugs back in (I'm running HT0's because I'm supercharged), so I headed to the only shop that was open at 8pm on a Friday night: Pep Boys. Because for some reason I got it like that, I was able to use one of their bays, use brand new tools right off their shelf, and screw my plugs back in. All it cost me was some "guy time" talking junk about cars, life and other
with the fellas who work there. Pretty awesome. Turns out one of my plugs unscrewed itself almost all the way out, while another plug only required a about 6 turns to get it tight again. Tightened them back up, headed to the track, and I've been good ever since (knocking on wood).Long story short, you might want to check your plugs first.
I can't remember the size socket for stock plugs, so maybe someone else can chime in.
07vistavert
New Member
This is normal. Switching from the factory H pipe to an X pipe will reduce it. Personally, I like the popping on decel, it reminds me of the old days.
Similar threads
