Exhaust options for L99 with AFM tuned out

[3BVert]

Please help to educate me on a replacement exhaust for my L99. If I've tuned out AFM, does that open up my options on a replacement exhaust? I really have no clue, but from what I've read it seems that the cat back systems designed for the L99 have additional resonators to deal with the AFM noise. If you've turned off AFM, are you better off with an exhaust designed for the M6 or should you still get a system designed for the A6? I don't want to go to the expense of replacing the exhaust only to find out that it's still too quiet because of the A6 resonators.

Thanks.

[VADER SS L99]

If you have tuned out AFM ANY exhaust made for the 2010 Camaro SS will work including those made for LS3 cars and those made for L99 cars. Since the car is running on all 8 all the time it will sound very similar to the ls3. Yes the L99 specific exhuast will be quieter than the LS3 type.

[3BVert]

Originally Posted by VADER SS L99

If you have tuned out AFM ANY exhaust made for the 2010 Camaro SS will work including those made for LS3 cars and those made for L99 cars. Since the car is running on all 8 all the time it will sound very similar to the ls3. Yes the L99 specific exhuast will be quieter than the LS3 type.

So an LS3 exhaust would really be the way to go in my situation, right? Other than it will sound like crap when I revert the tune to stock to take it in for service.

[duffmobile]

I'm in the same boat as you. I'm going to get rid of AFM and go with the LS3 catback. I'm worried it will be too quiet. When are you doing this? I'd like to hear your setup.

[taz]

ive tuned out the afm when I installed my magnacharger. Its in the shop right now installing a cai, kooks headers and corsa exhaust. I should be getting the car back before the weekend so I might be able to answer some of your questions. Tuning out the afm was the best thing ive done for this car so far.

[Dave Coyle]

You are open to every exhaust system out there. The main difference between the LS3 and L99 exhaust is the most companies have resonators installed right under the front seats on the L99 and the LS3 exhaust is just straight pipes. I run the Kooks 1 7/8 LT Headers and cats with the complete Corsa Exhaust and love it. Quiet inside the car while crusing at road speed but when you push the go pedal to the floor, she sounds like an all out race exhaust. Good luck on your hunt.

[myold88]

Originally Posted by 3BVert

So an LS3 exhaust would really be the way to go in my situation, right? Other than it will sound like crap when I revert the tune to stock to take it in for service.

My dealer's service mgr told me that once you do a AFM deactivation tune G.M. will know even if you return it to stock. He said many mechanical parts will no longer be covered. I will live with my stock exhaust on my A6 SS.
Also if you decide to sell or trade in your Camaro in a year or two, the value may be greatly reduced if it no longer has the factory warranty.
Just my thoughts.

[2010 SSRS]

This is good info to know, glad I read this before I have my exhaust done, cause I am definitely having the AFM turned off and I want the exhaust to be way louder than the factory exhaust.

[Snake Slayer]

Originally Posted by 2010 SSRS

This is good info to know, glad I read this before I have my exhaust done, cause I am definitely having the AFM turned off and I want the exhaust to be way louder than the factory exhaust.

I still have AFM turned on and went with the Magnaflow 16580 competition. Great sound and great price from Jordan at Magnflowplus.com

[3BVert]

Originally Posted by duffmobile

I'm in the same boat as you. I'm going to get rid of AFM and go with the LS3 catback. I'm worried it will be too quiet. When are you doing this? I'd like to hear your setup.

Hopefully within the next couple of weeks. If you are even considering turning off AFM and aren't concerned about the "potential" warranty issues, I say DO IT! It's like a whole new car. You won't be sorry.

Originally Posted by taz

ive tuned out the afm when I installed my magnacharger. Its in the shop right now installing a cai, kooks headers and corsa exhaust. I should be getting the car back before the weekend so I might be able to answer some of your questions. Tuning out the afm was the best thing ive done for this car so far.

AMEN BROTHER!!! But I do like the Heritage grille too!

Originally Posted by myold88

My dealer's service mgr told me that once you do a AFM deactivation tune G.M. will know even if you return it to stock. He said many mechanical parts will no longer be covered. I will live with my stock exhaust on my A6 SS.
Also if you decide to sell or trade in your Camaro in a year or two, the value may be greatly reduced if it no longer has the factory warranty.
Just my thoughts.

Maybe, maybe not. But I really don't care. I'd rather have a car that runs like it should for that year or two than have one I'm not happy with. Besides, I wasn't saying that I would return it to stock to try to fool the dealer. It's because you have to in case they reflash the ECM. With the Predator, you always want to keep the last GM flash so you revert it before taking it in for maintenance, save any new flash and then reflash your tune.

Originally Posted by 2010 SSRS

This is good info to know, glad I read this before I have my exhaust done, cause I am definitely having the AFM turned off and I want the exhaust to be way louder than the factory exhaust.

As I said to duffmobile. If you can live with the "potential" for warranty issues, DO IT!

[Dangeruss]

Go for it...it sounds so much better! I went with a Borla Stinger cat-back, and later added Kooks LT headers. Here's a couple of videos.

With the Borla



With Kooks & Borla

[LS Kernal]

Originally Posted by Dave Coyle

You are open to every exhaust system out there. The main difference between the LS3 and L99 exhaust is the most companies have resonators installed right under the front seats on the L99 and the LS3 exhaust is just straight pipes. I run the Kooks 1 7/8 LT Headers and cats with the complete Corsa Exhaust and love it. Quiet inside the car while crusing at road speed but when you push the go pedal to the floor, she sounds like an all out race exhaust. Good luck on your hunt.

Hey mate, do you have an exhaust vid??