Exhaust systems designed with L99/AFM in mind, and your reviews - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Entaille · 08-29-2010, 11:52 PM

I like the sound in the third video. I am still pursuing a catback solution, I don't want to mess with headers and cats and such : )

FEN · 08-30-2010, 12:15 AM

Quote:

Originally Posted by Entaille

I like the sound in the third video. I am still pursuing a catback solution, I don't want to mess with headers and cats and such : )

I understand.Problem is that there are so many cat backs available that its almost impossible to make a decission without hearing one first hand that you like?

Entaille · 08-30-2010, 12:37 AM

well, as you can see from the first post, there are only three exhaust systems designed specifically for the L99, that I've discovered. I am hoping to find more before making a decision. I doubt I will be able to find a local with one of these three setups to hear it in person.

VictoryMuscleCars · 08-30-2010, 09:37 AM

Quote:

Originally Posted by Entaille

I like the sound in the third video. I am still pursuing a catback solution, I don't want to mess with headers and cats and such : )

Yep, same here. FYI- not wanting to go off topic but thought I would mention that when I upgrade my exhaust I do plan on installing an air induction system too.... more air in... more air out...

axis · 08-30-2010, 04:21 PM

I don't think any typical aftermarket catback will work well with AFM. The only one that looks promising is the Helmholtz tubed catback. There is a thread about it. This is what GM uses in the L99 muffler. That U shaped pipe in the muffler. If you don't want to turn AFM off, this or stock will be your only option for keeping AFM annoyance down. If you're just looking for a more aggressive sound, cut out the resonator and install a non resonated Xpipe. IMO, a MUCH better sounding exhaust yet retains the OEM cruise quietness.

mikeSS · 08-30-2010, 06:02 PM

Quote:

Originally Posted by Entaille

I am more interested in sound and T304 / quality worksmanship than I am gains. it's hard to ignore when MBRP states their system gains 20+hp/tq and corsa says 6hp/tq - it is a slight consideration for someone who is going to very mildly mod their car.

ya right 20 hp gains .. thats more then a CAI .....

brantley847 · 08-30-2010, 06:21 PM

20 hp seems way, way off base. A CAI + Exhaust, I think it would be more realistic to expect 10 all together. Remember many of these websites say 'UP TO' and are rare cases if they even have been documented...

Also factor in if you have an L99 whether you want to go axle or cat. Personally I don't plan on going much further than a CAI and exhaust. I am not planning on moding much further than that. Subsequently, I will probably go axle back. I am pretty sure it is common sense, but what I have witnessed is you will have less issues with AFM with an axle than a full cat back w/ these resonators. Now if you plan on going further than a catback and CAI chances are you may not have a dealership honor your warranty anyways....so why not just tune the garbage out?

kook · 08-30-2010, 06:37 PM

Entaille,
Say what you want about the Magnaflow, I have had both the Corsa installed on a stock car that sounded great and was way to loud with LTs and a SC. I then switched to the Magnaflow street cat back and it now sounds great. No drone and really good sound at any RPM.

y2k king · 08-30-2010, 06:56 PM

the mbrp is the one i'm goin with. here's a clip.

MBRP Catback Road test. L99

VictoryMuscleCars · 08-30-2010, 07:01 PM

Quote:

Originally Posted by kook

Entaille,
Say what you want about the Magnaflow, I have had both the Corsa installed on a stock car that sounded great and was way to loud with LTs and a SC. I then switched to the Magnaflow street cat back and it now sounds great. No drone and really good sound at any RPM.

kook, is your Camaro a LS3 or L99? Just confirming... Thanks

Entaille · 08-30-2010, 07:35 PM

thanks y2k, that was exactly what I wanted to hear. someone with a video review with AFM and all.. perfect.

I was hoping it would be slightly louder, but it sounds great. was that before or after your JBA short headers?

kook · 08-30-2010, 07:55 PM

L99

y2k king · 08-30-2010, 07:59 PM

Quote:

Originally Posted by Entaille

thanks y2k, that was exactly what I wanted to hear. someone with a video review with AFM and all.. perfect.

I was hoping it would be slightly louder, but it sounds great. was that before or after your JBA short headers?

that's not my car, that's just a video that helped me decide on the mbrp system.

OBSSEST · 08-30-2010, 10:22 PM

Quote:

Originally Posted by axis

If you're just looking for a more aggressive sound, cut out the resonator and install a non resonated Xpipe. IMO, a MUCH better sounding exhaust yet retains the OEM cruise quietness.

I'd like to hear an L99 with an x-pipe and stock mufflers. Has anyone done this or seen a video?

08-30-2010, 04:21 PM	#19
axis Search Ninja Drives: 2010 Black 2SS/RS A6 Join Date: Oct 2009 Location: Central Ark Posts: 7,183	I don't think any typical aftermarket catback will work well with AFM. The only one that looks promising is the Helmholtz tubed catback. There is a thread about it. This is what GM uses in the L99 muffler. That U shaped pipe in the muffler. If you don't want to turn AFM off, this or stock will be your only option for keeping AFM annoyance down. If you're just looking for a more aggressive sound, cut out the resonator and install a non resonated Xpipe. IMO, a MUCH better sounding exhaust yet retains the OEM cruise quietness. __________________ 2010 Black 2SS/RS A6 Halltech CF 102 fed GPI modded intake manifold Bo (knows) White ported TB Kooks LT's/ Dynomax VT Pfadted (springs/sways) Dyno tuned by Rhino and GPI I once parallel parked a train.

08-30-2010, 06:21 PM	#21
brantley847 v It bites. Drives: 2011 IBM 2SS/RS Join Date: May 2008 Location: Orlando, FL Posts: 3,580	20 hp seems way, way off base. A CAI + Exhaust, I think it would be more realistic to expect 10 all together. Remember many of these websites say 'UP TO' and are rare cases if they even have been documented... Also factor in if you have an L99 whether you want to go axle or cat. Personally I don't plan on going much further than a CAI and exhaust. I am not planning on moding much further than that. Subsequently, I will probably go axle back. I am pretty sure it is common sense, but what I have witnessed is you will have less issues with AFM with an axle than a full cat back w/ these resonators. Now if you plan on going further than a catback and CAI chances are you may not have a dealership honor your warranty anyways....so why not just tune the garbage out? __________________ 2011 2SS/RS Performance: 439 RWHP: 226/236 Comp Cam, Kooks 1-7/8, CAInc, Borla S type, Vmax TB, Rx Catch Can, Trans cooler, SLP 160 termo, Melling high volume, Eibach Springs/Sways 1" drop, Whiteline complete bushing kit.

08-29-2010, 11:52 PM	#15
Entaille Drives: 2018 Camaro 2SS Join Date: Aug 2010 Location: Lake Stevens Posts: 1,005	I like the sound in the third video. I am still pursuing a catback solution, I don't want to mess with headers and cats and such : )

08-30-2010, 12:37 AM	#17
Entaille Drives: 2018 Camaro 2SS Join Date: Aug 2010 Location: Lake Stevens Posts: 1,005	well, as you can see from the first post, there are only three exhaust systems designed specifically for the L99, that I've discovered. I am hoping to find more before making a decision. I doubt I will be able to find a local with one of these three setups to hear it in person.

08-30-2010, 06:37 PM	#22
kook Drives: 2010 2SS Yellow Join Date: May 2010 Location: Indiana Posts: 548 View My Garage	Entaille, Say what you want about the Magnaflow, I have had both the Corsa installed on a stock car that sounded great and was way to loud with LTs and a SC. I then switched to the Magnaflow street cat back and it now sounds great. No drone and really good sound at any RPM.

08-30-2010, 06:56 PM	#23
y2k king Drives: 2011 ss camaro Join Date: Aug 2010 Location: spring hill, fl Posts: 1,705	the mbrp is the one i'm goin with. here's a clip. MBRP Catback Road test. L99

08-30-2010, 07:35 PM	#25
Entaille Drives: 2018 Camaro 2SS Join Date: Aug 2010 Location: Lake Stevens Posts: 1,005	thanks y2k, that was exactly what I wanted to hear. someone with a video review with AFM and all.. perfect. I was hoping it would be slightly louder, but it sounds great. was that before or after your JBA short headers?

08-30-2010, 07:55 PM	#26
kook Drives: 2010 2SS Yellow Join Date: May 2010 Location: Indiana Posts: 548 View My Garage	L99