05-06-2024, 10:44 AM | #1 |
Drives: Garnet Red / ZL1 1LE Join Date: Apr 2016
Location: USA
Posts: 502
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Anyone install the Magnaflow 12469 Mid pipe Muffler?
Recently did a muffler delete with MBRP. It's still too loud.
Anyone install the Magnaflow 12469? Curious about your thoughts/feedback. Any issues?
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#SAVETHEMANUALS
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05-06-2024, 11:06 AM | #2 |
Having FUN in the SUN...
Drives: 2022 M6 ZL1 1LE Join Date: Jan 2022
Location: San Diego CA
Posts: 1,195
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Yes sir... Several of us have... Check out this thread...
https://www.camaro6.com/forums/showt...ight=2650+loud I added this with the AWE axle back, headers and HF cats... and it made the car sound PERFECT... ARH HF Cats failed, gutted them, cars stunk and was too loud again, V banding in some 4.5" GESI's now...
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2022 M6 ZLE: Katech Standard Ported Blower + Ported Heads + 103mm TB + Oil Pump + C5R Chain + Valve Covers + Coil Relocation Kit
TSP VVT and DoD Delete Covers + LME Chain Guide + DSX Billet Lid + ATI Damper + 9.17" Lower + 2.4" Upper + MM Wild CC + RF BG Coated AR Headers + GESI UHO Cats + V Bands + AWE Touring + Magnaflow Center X + MSD Coils + Banks iDash + JMS Booster ALL the BMR Read End Goodies + BMR Motor Mounts + JRE Terminator Cam Package + FIC 30 + DMS Front HX + Fender Tank GMS High Flow Impact Bar + GMS Stage II Oil Cooler + GMS Stage III HX System = 770rwhp 815rwtq @E55 13.5psi |
05-06-2024, 11:17 AM | #3 |
Drives: Garnet Red / ZL1 1LE Join Date: Apr 2016
Location: USA
Posts: 502
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SOCAL - Love it!
Any issues with the MF muffler? Any backpressure issues? Guessing you've been nothing but happy.
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#SAVETHEMANUALS
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05-06-2024, 12:12 PM | #4 |
Drives: 2019 Chevy Camaro ZL1 M6 Join Date: Jul 2019
Location: Sea level
Posts: 1,276
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I did 2 MBRP billet resonators in the tunnel and it sounds great now.
http://youtu.be/WEZaG496qRE?si=mA-kEzjsgewO49UK http://youtu.be/H9Q4Ys34gCA?si=DuxzuTh-t8I0K8C_ |
05-06-2024, 12:54 PM | #5 | |
Having FUN in the SUN...
Drives: 2022 M6 ZL1 1LE Join Date: Jan 2022
Location: San Diego CA
Posts: 1,195
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Quote:
No issues. It is a straight through X pipe design... so no back pressure issues.
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2022 M6 ZLE: Katech Standard Ported Blower + Ported Heads + 103mm TB + Oil Pump + C5R Chain + Valve Covers + Coil Relocation Kit
TSP VVT and DoD Delete Covers + LME Chain Guide + DSX Billet Lid + ATI Damper + 9.17" Lower + 2.4" Upper + MM Wild CC + RF BG Coated AR Headers + GESI UHO Cats + V Bands + AWE Touring + Magnaflow Center X + MSD Coils + Banks iDash + JMS Booster ALL the BMR Read End Goodies + BMR Motor Mounts + JRE Terminator Cam Package + FIC 30 + DMS Front HX + Fender Tank GMS High Flow Impact Bar + GMS Stage II Oil Cooler + GMS Stage III HX System = 770rwhp 815rwtq @E55 13.5psi |
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05-06-2024, 05:02 PM | #6 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 5,125
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I can’t speak for SoCal but I’m at 1059 WHP through that Magnaflow muffler… so it probably isn’t too restrictive…
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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05-06-2024, 08:13 PM | #7 |
Drives: 2018 Cadillac CTS-V Join Date: Jul 2012
Location: Livermore
Posts: 96
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I had issues with that muffler. It definitely quieted things down and for that I really liked it. I had restriction problems as it takes 2, 3” inlets and goes down to a dual Y - effectively making it a single 3” in the center. I spoke to an engineer at Magnaflow as I was a bit confused by why they would do this. He sent me the CAD drawings that confirmed the diameter of the piping inside and that it wasn’t suited for our application but it would muffle sound if you have sound restrictions. Ultimately I went with the GESI high flow cats, MRBP resonators and it took a lot of the edge off. For track days at sound restricted tracks - like Laguna - I had Laguna pipes made with a insertable resonator to further reduce noise if I need to. (Sometimes the fog/humidity in the air will cause sound to reverb around the sound booth louder).
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05-06-2024, 08:25 PM | #8 | |
Having FUN in the SUN...
Drives: 2022 M6 ZL1 1LE Join Date: Jan 2022
Location: San Diego CA
Posts: 1,195
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Quote:
Show off.... HAHAHA
__________________
2022 M6 ZLE: Katech Standard Ported Blower + Ported Heads + 103mm TB + Oil Pump + C5R Chain + Valve Covers + Coil Relocation Kit
TSP VVT and DoD Delete Covers + LME Chain Guide + DSX Billet Lid + ATI Damper + 9.17" Lower + 2.4" Upper + MM Wild CC + RF BG Coated AR Headers + GESI UHO Cats + V Bands + AWE Touring + Magnaflow Center X + MSD Coils + Banks iDash + JMS Booster ALL the BMR Read End Goodies + BMR Motor Mounts + JRE Terminator Cam Package + FIC 30 + DMS Front HX + Fender Tank GMS High Flow Impact Bar + GMS Stage II Oil Cooler + GMS Stage III HX System = 770rwhp 815rwtq @E55 13.5psi |
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05-06-2024, 09:04 PM | #9 |
Drives: 2018 Cadillac CTS-V Join Date: Jul 2012
Location: Livermore
Posts: 96
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05-06-2024, 10:00 PM | #10 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 5,125
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780 WHP before I added the muffler (it was added after adding headers to the car). Still on 93 at that point, this was back in 2020. Since then I beefed up the fuel system and made 837 WHP, dialed up the blower speed to 927 WHP, ported the 2.9 to 955 WHP and finally switched to the 3.0 to land at 1059 WHP. Even with big DI stuff I’m out of fuel otherwise I’d make even more…and hopefully will later this year.
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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05-06-2024, 10:01 PM | #11 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 5,125
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__________________
2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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05-06-2024, 10:31 PM | #12 |
Drives: '19 M2C / '19 ZL1 Join Date: Aug 2021
Location: Desert
Posts: 97
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it reduced the sound quite a bit with my borla atak, stock headers. no more bangs at startup. great fitment.
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05-06-2024, 11:12 PM | #13 | |
Drives: 2018 Cadillac CTS-V Join Date: Jul 2012
Location: Livermore
Posts: 96
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Quote:
Stock bottom end with Magnuson 2650, Port Injection and ARH LTs. Added a slightly smaller upper pulley since then and seems to be around 16.5 psi. Been thinking about heads but, I’m having trouble finding traction as it is on the road course at my level. Ive been tempted to fillet open the Magnaflow muffler and put a true X pipe in there. The packaging is hard to beat. I would do it so I could swap the MBRP resonators out on quieter track days. |
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05-07-2024, 07:18 AM | #14 | |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 5,125
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Quote:
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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