11-29-2010, 06:10 PM | #1 |
Drives: 2018 Camaro 2SS Join Date: Aug 2010
Location: Lake Stevens
Posts: 1,005
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L99 owners - high flow cats, cat back exhaust, and AFM
I am trying to cover all of my concerns before I buy high flow cats. I bought the MBRP system designed for the L99 / 6 speed auto and it sounds great, but too quiet. I know high flow cats will wake that right up and provide a little power gain, while allowing me to avoid getting a tune (reason for not getting long tubes)
any owners out there in the same boat that went through with it? L99, HFCs and a catback without a tune? I am concerned that when AFM kicks on the exhaust will sound sound will turn crappy and amplified, currently AFM is not a concern at all. I may just chance it and see how it goes but would like to avoid the resale hit and install times if someone's already experienced this and disliked it.
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11-29-2010, 07:21 PM | #2 |
Drives: Red 2010 Camaro 2SS L99 Join Date: Apr 2010
Location: Naperville, IL
Posts: 208
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I have a L99 with LTH, x-pipe and loudmouth 1. I had my loudmouth 1 installed(which is basically muffler delete) before i got my tune and AFM was still on, it was noticeable when AFM kicked in but it didn't sound THAT bad. it wasn't crazy annoying but it was noticeable. then i bought a diablosport for $290 and a cord that is used to connect it to my computer or laptop. anyway i turned off afm with that and had a local specialty mechanics shop use my diablosport connected to his laptop and got me a tune. then i bought LTH(no cats) and an x-pipe. I'm getting high flow cats soon and getting another tune with a different program that the mechanics shop is using and not charging me. But if i stopped after loudmouth 1 and got no tune i would be happy. but if u got headers it would be really noticeable and i assume annoying. sorry if i rambled lol.
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2010 Camaro 2SS/RS L99 6AT - 451 RWHP, 414 RWTQ
TSP VVT-3 Cam DOD/AFM Delete, Ported Stock Heads, Circle-D 2B Multi Disk Converter, Custom 3" Exhaust w/Burns Mufflers Exhaust Clip: http://youtu.be/c_quv8eoVNQ |
11-29-2010, 07:30 PM | #3 | |
Drives: 2015 c7 Join Date: Nov 2009
Location: MI
Posts: 7,462
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11-29-2010, 07:35 PM | #4 |
Drives: 2018 Camaro 2SS Join Date: Aug 2010
Location: Lake Stevens
Posts: 1,005
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I envy you guys that got a tune I'm just *****footin it : )
really looking to hear from L99 owners with high flow cats and no tune.
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11-29-2010, 07:36 PM | #5 |
Drives: Red 2010 Camaro 2SS L99 Join Date: Apr 2010
Location: Naperville, IL
Posts: 208
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haha yeah, but i love it, resonators are gone too btw. there is a video below in my sig i gotta make another though cause sound broke up, cause it was so loud.
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2010 Camaro 2SS/RS L99 6AT - 451 RWHP, 414 RWTQ
TSP VVT-3 Cam DOD/AFM Delete, Ported Stock Heads, Circle-D 2B Multi Disk Converter, Custom 3" Exhaust w/Burns Mufflers Exhaust Clip: http://youtu.be/c_quv8eoVNQ |
11-29-2010, 08:56 PM | #6 |
Drives: BLACK 1SS Join Date: Apr 2010
Location: SOUTHERN ILLINOIS
Posts: 269
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I have jba highflow cats resonator delete with edelbrock x pipe and muffler delete. I love my exhaust and so does everyone that hears the car. What I do to avoid A F M is put the car in manual mode shift up to third and then down shift to second and then up shift back to third this disables A F M but you have to stay in manual mode if you put it back in drive A F M comes back....everyone say my car sounds mean as hell
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COLD AIR INDUCTIONS CAI JBA HIGH FLOW CATS
EDELBROCK X-PIPE MUFFLER DELETE Last edited by |BLACKSS|; 11-29-2010 at 08:57 PM. Reason: spelling |
11-29-2010, 09:05 PM | #7 |
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Get the tune and live dangerously and go loud (louder the better)
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Jannetty Racing JRE Street Package
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11-29-2010, 09:15 PM | #8 |
SS/RS
Drives: 2010 SS/RS IOM w/blk stripes A6 Join Date: Jun 2009
Location: Eastern Washington
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I installed ARH w/high flow cats to the stock t/pipes and mufflers first. It was good, but the AFM would cut in and out which was annoying, so, I installed a CAI and a custom tune. Shut off the AFM and the car is awesome. Ran it on a road trip for 5200 miles and it performed flawlessly. 24.3 MPG at 70-75 most of time. Get-er-done.
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11-29-2010, 09:56 PM | #9 |
Drives: 2018 Camaro 2SS Join Date: Aug 2010
Location: Lake Stevens
Posts: 1,005
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again I have no interest in tuning as I value the warranty .. for now.
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11-29-2010, 10:05 PM | #10 |
Drives: Red 2010 Camaro 2SS L99 Join Date: Apr 2010
Location: Naperville, IL
Posts: 208
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AMEN!!
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2010 Camaro 2SS/RS L99 6AT - 451 RWHP, 414 RWTQ
TSP VVT-3 Cam DOD/AFM Delete, Ported Stock Heads, Circle-D 2B Multi Disk Converter, Custom 3" Exhaust w/Burns Mufflers Exhaust Clip: http://youtu.be/c_quv8eoVNQ |
11-29-2010, 11:43 PM | #11 |
So Cal Camaro5 Race Team
Drives: '10 SS/RS, '06 HHR, '70 El Camino Join Date: Sep 2009
Location: Huntington Beach, CA
Posts: 2,589
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Being a California car i have not messed with the long tubes or High flow cats. I have done a Flowmaster Cat back but my best investment has been my SCT x3 handheld tuner with a tune from Janetty turning off my AFM and tuning the transmission shift points
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TEAM L99 - So Cal Camaro5 Race Team #27
9/5/09 Purchased #36962 Black 1SS/RS L99 "E-TCKT" Base Dyno 328hp/341tq @BBK meet Mods to Date: Window Tint 5% & 15%, ACC P13W Lighting, Adaptive DRL Harness, Ghost Armor, Lloyds "SS" Mats, Dash Plaque, Flowmaster Outlaw Exhaust, Drake Front Bowtie Delete, Stealth 3457 Chrome/Mirror Signal Bulbs, Grant Revolutions Steering Wheel, PFADT Sport Springs, Sway Bars, End Links, Trailing Arms, 4 Wheel Alignment, Hurst Auto Shifter and Paddle Shifter, Satin Black Rear Tail Light Bezels |
11-29-2010, 11:45 PM | #12 |
Drives: 2018 Camaro 2SS Join Date: Aug 2010
Location: Lake Stevens
Posts: 1,005
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I'm sure the tunes the best thing for an L99 if you want to have some fun with it. I just really value the warranty until I have put some serious miles on the car and have it thoroughly looked over. 2k miles and no track time yet, not the time to break the warranty for me.
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11-29-2010, 11:50 PM | #13 |
So Cal Camaro5 Race Team
Drives: '10 SS/RS, '06 HHR, '70 El Camino Join Date: Sep 2009
Location: Huntington Beach, CA
Posts: 2,589
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warranty in tack, just reload stock tune when it goes in for service, no problems.
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TEAM L99 - So Cal Camaro5 Race Team #27
9/5/09 Purchased #36962 Black 1SS/RS L99 "E-TCKT" Base Dyno 328hp/341tq @BBK meet Mods to Date: Window Tint 5% & 15%, ACC P13W Lighting, Adaptive DRL Harness, Ghost Armor, Lloyds "SS" Mats, Dash Plaque, Flowmaster Outlaw Exhaust, Drake Front Bowtie Delete, Stealth 3457 Chrome/Mirror Signal Bulbs, Grant Revolutions Steering Wheel, PFADT Sport Springs, Sway Bars, End Links, Trailing Arms, 4 Wheel Alignment, Hurst Auto Shifter and Paddle Shifter, Satin Black Rear Tail Light Bezels |
11-30-2010, 12:32 AM | #14 | |
Drives: 2015 c7 Join Date: Nov 2009
Location: MI
Posts: 7,462
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