SLP Loudmouth 2 back fire?

[Maro SS]

hey guys,

so i have 2001 camaro SS it only has a lid and an SLP cat back (loudmouth 2) and when im not in gear(m6) if i rev over about 4000 rpm she will make a crackle noise when im leting off the gas. sounds to me like a back fire but im new to LS1 .. does anybody else have this problem with LM2? is this even a problem?

thanks in advance you guys are always great help!

[Danger731]

I love that sound !

[cdz28]

I love that sound !

x2

Its not a problem

[Phantom2kz]

used to get that sound with the flowmonster when cold,,,man i miss that..

[Maro SS]

Haha I thought it was pretty bad ass then someone made a comment and I got worried.

Thanks guys

[konigandy6]

Yup, completely normal... wait till you put headers on!!!

[Sayed_000]

sick sound man !! enjoy life

[2K2SLPSS]

Yup, completely normal... wait till you put headers on!!!

i have the cme and when the motor is cold i can usually get one good clank/pop of a backfire. then when its warm i can usually hear soft low pops if i shift it right. im waiting on my longtubes and ory. i cant wait to hear the bfires then.

[Maro SS]

can anyone explain to me what exactly causes that to happen?

[35th-ANV-SS]

I have the LM-II on my car also. It has done the same thing. No worries. In the process of getting 1-7/8" Kooks LT so we'll see what that sounds like when I get her back.

[MNZ28]

I love that sound. The lm2 is to quiet for my tastes especially on a stock car. I had lm2, lm1, and now sweet thunder chambered muffler. When I put my longtubes on with ory and lm1 that thing was loud as fuck. scared old people.

[2K2SLPSS]

what muffler is on the cme? is it even a loudmouth or completely different??

[35th-ANV-SS]

I love that sound. The lm2 is to quiet for my tastes especially on a stock car. I had lm2, lm1, and now sweet thunder chambered muffler. When I put my longtubes on with ory and lm1 that thing was loud as fuck. scared old people.

Nice....I am hoping it is A LOT louder.

[tatertot91]

Mine does that when cold. I love it

[ghettosled]

i thought that happens because the cats are cold while the air pump is trying to heat them up quickly.

[SajoR]

I have a full exhaust from headers back, with just a borla muffler and freaking LOVE that sound when i pick it up to about 4500rpm and just let off.....

So you have no worries there, it's an enjoyable sound =)

I do believe you get that kind of sound strictly from our cars since I've never really heard it on a mustang or charger before.....I thought it was the firing order that made it pop when let off, but I could very well be wrong....

Anyone have any ideas?

[JoshieDoom]

I have a cutout and gutted cats and no emissions and mine sounds epicly loud

[FullBlack4thGen]

My flowmaster axleback does the same thing. Personally i like it but im waiting for a new engine before i put a headers back exhaust. I just hope with a new engine it will still do it.

[00Z28DC]

I have a full exhaust from headers back, with just a borla muffler and freaking LOVE that sound when i pick it up to about 4500rpm and just let off.....

So you have no worries there, it's an enjoyable sound =)

I do believe you get that kind of sound strictly from our cars since I've never really heard it on a mustang or charger before.....I thought it was the firing order that made it pop when let off, but I could very well be wrong....

Anyone have any ideas?

I have a lm2 in my A4 and it does the same thing when I hit 4500 and let the rpm's drop. But man I love that sound! I think you might be on to something with the firing order thing though, I've definately never heard anything like that from a stang or charger either.

[Blue Thunder 42]

can anyone explain to me what exactly causes that to happen?

I believe it's unused gas exploding in the cats or muffler or lack there of. I love it also....