LS3 and L99 Exhaust compatible? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SSTG · 11-24-2011, 01:50 PM

Did a search with those keywords and nothing came up, so before anyone flames me.

Will one work on the other? Are they the same?

Thanks and Happy Thanksgiving!

Nucorman · 11-24-2011, 01:53 PM

Yes.

VADR_H8R · 11-24-2011, 02:03 PM

I could have sworn the L99 exhaust was completely different.

SSTG · 11-24-2011, 02:05 PM

That is what I thought I remembered reading once upon a time. But....
Someone will confirm

Apex Motorsports · 11-24-2011, 02:12 PM

Quote:

Originally Posted by VADR_H8R

I could have sworn the L99 exhaust was completely different.

The stock exhaust systems are different but follow the same "path". Aftermarket systems generally fit both unless otherwise noted. What systems are you looking at?

SSTG · 11-24-2011, 02:15 PM

Thanks Chase. I sold The Borla ATAK Axel back I got from you and need to replace them.
Got any Black Friday deals on Flowmaster catback for GFX?

VADR_H8R · 11-24-2011, 02:42 PM

here is the pic I was referring to... but if your wanting to go the aftermarket route I do think they will work on either engine because their paths are indeed similar

SSTG · 11-24-2011, 03:18 PM

No, I am talking about stock. But I am not against an aftermarket system.

Synner · 11-24-2011, 03:38 PM

The resonator on the L99 exhaust is massive to deal with the AFM noise. Both should fit though although I see no point in replacing one with the other if you're looking for sound or weight savings. You can get a budget exhaust like cherry bomb or something along those lines for not much money.

MikeOD · 11-24-2011, 04:42 PM

Yes, the stock catback exhausts ARE interchangeable...No they are not the same. The LS3 exhaust is a pretty conventional exhaust because it's a pretty conventional V8...the L99 exhaust has a different setup in it to avoid having the car sound "weird" when AFM is on.

L99CAMA2011 · 11-24-2011, 04:51 PM

Quote:

Originally Posted by MikeOD

Yes, the stock catback exhausts ARE interchangeable...No they are not the same. The LS3 exhaust is a pretty conventional exhaust because it's a pretty conventional V8...the L99 exhaust has a different setup in it to avoid having the car sound "weird" when AFM is on.

L99 has a resonated x pipe setup and LS3 has an H pipe. I had both on my L99 and they perform different as well. You can feel the delay in flow with the stock H pipe on an L99 vs the L99 resonated x pipe setup. Don't put H pipes on L99s.

jlsat3 · 01-22-2019, 12:50 AM

What if you turn off your AFM?

oslouie · 01-25-2019, 07:58 PM

Quote:

Originally Posted by jlsat3

What if you turn off your AFM?

I think you would be fine. Again, the only difference is the resonator on the L99 when AFM kicks in. If you turn AFM off then I don't see why you would have to worry about having the resonator.

11-24-2011, 01:50 PM	#1
SSTG Drives: 2014 Z51 Corvette Join Date: Apr 2011 Location: Ofallon, Mo. Posts: 5,822	LS3 and L99 Exhaust compatible? Did a search with those keywords and nothing came up, so before anyone flames me. Will one work on the other? Are they the same? Thanks and Happy Thanksgiving!

11-24-2011, 02:42 PM	#7
VADR_H8R Drives: 2011 camaro 1ss synergy green Join Date: Apr 2011 Location: greensburg Posts: 444	here is the pic I was referring to... but if your wanting to go the aftermarket route I do think they will work on either engine because their paths are indeed similar Attached Images

11-24-2011, 04:42 PM	#10
MikeOD Drives: 2010 M6 2SS Join Date: Mar 2011 Location: South Windsor, CT Posts: 1,202	Yes, the stock catback exhausts ARE interchangeable...No they are not the same. The LS3 exhaust is a pretty conventional exhaust because it's a pretty conventional V8...the L99 exhaust has a different setup in it to avoid having the car sound "weird" when AFM is on. __________________ 2010 Camaro SS M6. Heads/Cam/Intake/Headers/Exhaust/Suspension

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11-24-2011, 01:53 PM	#2
Nucorman nucorman Drives: 2011 Camaro SS Join Date: Feb 2011 Location: Madison AL Posts: 40 View My Garage	Yes.

11-24-2011, 02:03 PM	#3
VADR_H8R Drives: 2011 camaro 1ss synergy green Join Date: Apr 2011 Location: greensburg Posts: 444	I could have sworn the L99 exhaust was completely different.

11-24-2011, 02:05 PM	#4
SSTG Drives: 2014 Z51 Corvette Join Date: Apr 2011 Location: Ofallon, Mo. Posts: 5,822	That is what I thought I remembered reading once upon a time. But.... Someone will confirm

11-24-2011, 02:15 PM	#6
SSTG Drives: 2014 Z51 Corvette Join Date: Apr 2011 Location: Ofallon, Mo. Posts: 5,822	Thanks Chase. I sold The Borla ATAK Axel back I got from you and need to replace them. Got any Black Friday deals on Flowmaster catback for GFX?

11-24-2011, 03:18 PM	#8
SSTG Drives: 2014 Z51 Corvette Join Date: Apr 2011 Location: Ofallon, Mo. Posts: 5,822	No, I am talking about stock. But I am not against an aftermarket system.

11-24-2011, 03:38 PM	#9
Synner Drives: cars Join Date: May 2011 Location: Oversneeze Posts: 4,542	The resonator on the L99 exhaust is massive to deal with the AFM noise. Both should fit though although I see no point in replacing one with the other if you're looking for sound or weight savings. You can get a budget exhaust like cherry bomb or something along those lines for not much money.

01-22-2019, 12:50 AM	#12
jlsat3 Drives: 2013 Camaro Join Date: Mar 2016 Location: Ventura Posts: 49	What if you turn off your AFM?