Muffler & AFM - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

i6oz · 02-16-2019, 06:03 AM

Hello Camaro5,

I know this has been posted a lot, but I never found anyone talking about how it helps saving fuel. In addition, correct me if I am wrong, I read that if you start using paddle shifters it will "disable the AFM" temporarily, so after reading this I started considering keeping AFM.

Another thing is that If I did a muffler delete, should I tune my car ('11 SS)? I read that it could mess the "air/fuel" ratio. Please excuse me since I am new to the whole cars scene.

My whole point is that I saw a lot of posts complaining about how the AFM is interfering with their exhaust sounds.. However, for now, I will go for just a muffler delete and start using paddle shifters more if it doesn't need any tuning.

rontammy0 · 02-16-2019, 08:22 AM

Its true. Once you start driving in manual mode in 1st using the paddles I upshifted to 2nd then back to 1st as soon as I left my driveway. Your first downshift followed by an upshift in any gear will disable the afm.

silverstorm · 02-16-2019, 08:56 AM

Doing a muffler delete will mess with the air/fuel ratio but not much. You don't really need a tune since it's nothing performance wise just sound.

LCPLPunk · 02-16-2019, 09:11 AM

Honestly, I would start with a resonator delete and add an x-pipe first.

i6oz · 02-16-2019, 10:44 AM

Quote:

Originally Posted by rontammy0

Its true. Once you start driving in manual mode in 1st using the paddles I upshifted to 2nd then back to 1st as soon as I left my driveway. Your first downshift followed by an upshift in any gear will disable the afm.

Thanks for the information!

Quote:

Originally Posted by silverstorm

Doing a muffler delete will mess with the air/fuel ratio but not much. You don't really need a tune since it's nothing performance wise just sound.

The thing is that I read alot online, but nothing gives me a direct answer.

Quote:

Originally Posted by LCPLPunk

Honestly, I would start with a resonator delete and add an x-pipe first.

Is it going to let the car have a meaner sound/more pops? For now I am going cheap till I save money to get a proper exhaust system from our dealership's accessory branch since they give approvals (so you don't get fined)

Moto-Mojo · 02-16-2019, 11:11 AM

I would have to say for 99.9% of the people on this forum, saving fuel is the L A S T thing considered with 99.9% of the mods discussed. Some will argue both ways on AFM delete. But again, most are too happy to be driving on the 8 cylinders they PAID FOR to ever look at MPG. I think I’d be happy to get less MPG but have never paid much attention. Right now, I’d pay to stop the torrential rain and snow in CA!

Moto-Mojo · 02-16-2019, 11:17 AM

If you want a legitimate mod that has proven HP gains, (albeit minor) get a CAI. The sound alone is worth the $300-500 price for daily or weekend warriors. I’d recommend a GM Z/28 model. But people like others too. Debatable, but no tune is required.

What are emission laws like there?

i6oz · 02-16-2019, 11:49 PM

Quote:

Originally Posted by Moto-Mojo

I would have to say for 99.9% of the people on this forum, saving fuel is the L A S T thing considered with 99.9% of the mods discussed. Some will argue both ways on AFM delete. But again, most are too happy to be driving on the 8 cylinders they PAID FOR to ever look at MPG. I think I’d be happy to get less MPG but have never paid much attention. Right now, I’d pay to stop the torrential rain and snow in CA!

Quote:

Originally Posted by Moto-Mojo

If you want a legitimate mod that has proven HP gains, (albeit minor) get a CAI. The sound alone is worth the $300-500 price for daily or weekend warriors. I’d recommend a GM Z/28 model. But people like others too. Debatable, but no tune is required.

What are emission laws like there?

Yea, that's what I noticed too. No one cares about fuel. Anyways, it is not bad to keep the AFM since you can get the 8 cylinders you paid for by using the paddle shifters. In other words, it is good to have both. I am willing to get a CAI in the future, however, that is not my #1 priority. Now I am looking for a bumper swap. 5gen -> 6gen zl1

Chris49066SS · 02-17-2019, 10:04 AM

Quote:

Originally Posted by rontammy0

Its true. Once you start driving in manual mode in 1st using the paddles I upshifted to 2nd then back to 1st as soon as I left my driveway. Your first downshift followed by an upshift in any gear will disable the afm.

Ugh I remember having to do that nonsense lol. You doing a cam anytime soon Ron? Thats when the AFM lifters really need to go

rontammy0 · 02-17-2019, 10:13 AM

Quote:

Originally Posted by Chris49066SS

Ugh I remember having to do that nonsense lol. You doing a cam anytime soon Ron? Thats when the AFM lifters really need to go

Well I'm hoping over this winter....but other things have popped up so it may be put off a bit..but yes a cam is my next mod for sure.

Crazystax · 02-17-2019, 11:15 PM

Lost damn near all my power tryna create that Crazy sound. how do i get that Hp back...and keep the Sound?

Aqua Blue RS/SS · 02-17-2019, 11:29 PM

Hmm a camaro SS with a 6.8 hemi.... sounds like a load to me.

rontammy0 · 02-18-2019, 05:14 AM

Quote:

Originally Posted by Crazystax

Lost damn near all my power tryna create that Crazy sound. how do i get that Hp back...and keep the Sound?

There is no power gain from catback exhaust.

sixty9fordkiller · 02-18-2019, 09:12 AM

Quote:

Originally Posted by Aqua Blue RS/SS

Hmm a camaro SS with a 6.8 hemi.... sounds like a load to me.

mine has a 6.2 kidney

02-16-2019, 09:11 AM	#4
LCPLPunk USA-1 Drives: 2010 Camaro SS L99 Join Date: Jul 2016 Location: Near DC Posts: 1,893 View My Garage	Honestly, I would start with a resonator delete and add an x-pipe first. __________________ "A Camaro in the garage is safe, but that's not what Camaros are built for..." R2C CAI / Apex Scoop / VMAX Ported TB / Speed Engineering LTHs / X-pipe / GPI port/rod-mod intake manifold / Circle D 3200 278mm Converter / 3.91 gears / DynoSteve tuned / 1LE Shocks/Struts/Toe Links / ZL1 Rear Sway Bar / Z/28 Trailing arms / Prothane Radius Arm & Subframe Bushings / BMR UCA Bracket, Steering rack bushing / B&M Tranny Cooler / RX Catch Can / Jannetty Tranny Dipstick / 2012+ Heater Hose / 2013+ Rearview Mirror / Fuel rail flip / Drake shifter / Oil Cooler Delete

02-16-2019, 11:11 AM	#6
Moto-Mojo Fast Cars and Old Guitars Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012 Location: N. CA Posts: 3,974	I would have to say for 99.9% of the people on this forum, saving fuel is the L A S T thing considered with 99.9% of the mods discussed. Some will argue both ways on AFM delete. But again, most are too happy to be driving on the 8 cylinders they PAID FOR to ever look at MPG. I think I’d be happy to get less MPG but have never paid much attention. Right now, I’d pay to stop the torrential rain and snow in CA! __________________ “I don’t want to belong to any club that would have me as a member.” - Groucho Marx

02-16-2019, 11:17 AM	#7
Moto-Mojo Fast Cars and Old Guitars Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012 Location: N. CA Posts: 3,974	If you want a legitimate mod that has proven HP gains, (albeit minor) get a CAI. The sound alone is worth the $300-500 price for daily or weekend warriors. I’d recommend a GM Z/28 model. But people like others too. Debatable, but no tune is required. What are emission laws like there? __________________ “I don’t want to belong to any club that would have me as a member.” - Groucho Marx

02-17-2019, 11:15 PM	#11
Crazystax Drives: 2014 camaro ss 6.2 Hemi Join Date: Feb 2019 Location: NewJersey Posts: 5	2014 ss Camaro ...Delete Exhaust & Resonator Lost damn near all my power tryna create that Crazy sound. how do i get that Hp back...and keep the Sound?

02-17-2019, 11:29 PM	#12
Aqua Blue RS/SS Drives: ABM #93 Join Date: Oct 2018 Location: Lotaburger Posts: 2,695	Hmm a camaro SS with a 6.8 hemi.... sounds like a load to me. __________________ ABM #2399 2SS/RS:SOLD ABM #93 2SS/RS Black Rally stripes, Titanium Interior 4,000 miles: GM GFX side skirts and diffuser waiting on paint, GM dovetail, GM heritage, RPI ZL1 style splitter. ‘87 IROC-Z Iroc blue. all original unmolested with 50K miles. Last edited by Aqua Blue RS/SS; 02-17-2019 at 11:39 PM.

02-16-2019, 06:03 AM	#1
i6oz Drives: 2011 Camaro SS Join Date: Oct 2018 Location: United Arab Emarites Posts: 17	Muffler & AFM Hello Camaro5, I know this has been posted a lot, but I never found anyone talking about how it helps saving fuel. In addition, correct me if I am wrong, I read that if you start using paddle shifters it will "disable the AFM" temporarily, so after reading this I started considering keeping AFM. Another thing is that If I did a muffler delete, should I tune my car ('11 SS)? I read that it could mess the "air/fuel" ratio. Please excuse me since I am new to the whole cars scene. My whole point is that I saw a lot of posts complaining about how the AFM is interfering with their exhaust sounds.. However, for now, I will go for just a muffler delete and start using paddle shifters more if it doesn't need any tuning.

02-16-2019, 08:22 AM	#2
rontammy0 Account Suspended Drives: 2011 2SS/ RS INFERNO ORANGE L99 Join Date: Dec 2012 Location: Alliston Ontario Canada Posts: 9,057 View My Garage	Its true. Once you start driving in manual mode in 1st using the paddles I upshifted to 2nd then back to 1st as soon as I left my driveway. Your first downshift followed by an upshift in any gear will disable the afm.

02-16-2019, 08:56 AM	#3
silverstorm Drives: 2014 Camaro 2LS Join Date: Mar 2018 Location: Nashville, TN Posts: 213 View My Garage	Doing a muffler delete will mess with the air/fuel ratio but not much. You don't really need a tune since it's nothing performance wise just sound.