Hey guys I've had my RA with exhaust for awhile, recently got the ams testpipe. But its still doing it. I think its because I changed my muffler. I have a magnaflow muffler. What can I do to better this or what muffler would you guys recrommend.

 

I had magnaflow on mine and never had any issues. Have you had it tuned? When does it backfire, what are you doing when it happens? If the rev limit fuel cut and ignition cut aren't set properly in the ECM, it will backfire when you hit the rev limit. Being that if the fuel cut is cut off after the ign cut, fuel still gets shot through the motor with no spark going right out the exhaust, once rpms gets below limit, spark cuts back in igniting all the fuel in the exhaust with a very loud backfire and big flame.

 

my car will backfire too if i let go of the gas pedal and then tap it lightly again. it sounds like a gun shot its kinda cool.

 

mine does it too, with a axleback UR and a ttp tune

 

i get a little "popping" from my exhaust sometimes.....

........ at de-acceleration /trailing throttle.

i have : UR down-pipe , UR high flow cat, magnaflow evo x cat back.

 

Its from the test pipe and/or hi flow cats. I never backfired when I had the stock cat and AMS cat back on, but with the hi flow cat it pops when I'm hard boost and let go.

 

All it is, is noises your not use to because you dont have the stock CAT to resinator or stop any of those noises / backfires.

 

same here i have UR cat-back

and some times i'm throwing flammes

pretty nice!!!

 

You're catless so there's nothing to catch any unburnt fuel thus it can travel along the exhaust and ignite further downstream.

 

Flames? Forreal? Dual Flames!

 

yep dual flames like fast n furious lol but a friend of mine with his mazda 3 speed throwing some huge flame 2-3 feet long

 

It's just my anti-lag system.

 

Mine does the same thing when I let off the gas at high RPM's. I have the Buschur Racing cat-back, which is basically a straight pipe.

 

Crazy I was just about to make a thread about my ra backfiring. So it could be a couple things... like someone previously said, if your running rich, fuel will make it to exhaust and explode. It could also be a MAF issue or maybe your fuel filter needs a change. That's just a couple troubleshooting points. Let's keep this thread going for a possible fix. It only happens to me in sport high boost and then let off pedal completely.

 

There's nothing wrong with it, all catless turbo cars will do it occasionally.