2.5" exhaust enough?? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

rmf26 · 04-28-2016, 02:18 AM

Hey guys
I currently own a 2.5" magnaflow exhaust system ... I was told recently that It would be a lot better to run a 3" magnaflow competition exhaust ... what gains should I expect? anyone ever ran this exhaust before is it tooo loud? ... My car is running a vortceh v7 supercharger with a 6.81 liter stroker kit

Homeless Man · 04-28-2016, 04:54 AM

3inch will sound better/deeper and the sound carries more from what I've heard

rmf26 · 04-28-2016, 08:16 AM

Quote:

Originally Posted by Homeless Man

3inch will sound better/deeper and the sound carries more from what I've heard

Great ill sell my 2.5 inch and get a 3 inch ... Ive also been told the lope from the cam sounds better too

Anthony @ LG Motorsports · 04-28-2016, 11:08 AM

Super charged applications?? I wouldn't be surprised if you pick up quite a bit of power by going to 3" all the way. Assuming the car has headers on it now?

KGL35 · 04-28-2016, 03:08 PM

I am running that cat back with shorties and highflow cats, with a GT14 cam, it sounds awesome. Loud, deep and at idle is wicked cool. That being said it does have a draw back, 1500-2000 rpm on highways has a drone that is really loud. But I wouldn't change it for anything.

pyroguy · 04-29-2016, 03:23 PM

It all depends on horsepower. If you are pushing some serious horsepower then 3" exhaust is a must. The average Camaro owner will be just fine with 2.5".

2012LS3VERT · 04-29-2016, 03:42 PM

I make 700+ with my 2.5" NPP. I used to have a 3" but had ground clearance issues.

shibbs · 04-29-2016, 03:56 PM

I am running the Magnaflow 3" Competition series. LT headers, no cats, and had the 2.5" section chopped out and a custom 3" section put in so it's truly 3" all the way through from the headers to the tailpipes. A tennis ball drops right through the whole thing.

Sounds great. Not insanely loud, there are actually times I wish it were louder. No raspiness, even without cats. There's a bit of drone around 1500 RPM, but not bad.

I definitely recommend. I'm hoping to get some sound clips soon.

Pro Stock John · 04-29-2016, 04:08 PM

I have the Hooker Blackheart 1 7/8 + full 3" exhaust setup. No ground clearance issue but I'm not lowered.

USAFS197 · 04-29-2016, 04:55 PM

Considering the OP is running larger displacement and boost, I don't think 3" is going to hurt at all--if anything, you'll likely get more power and a different tone.

2012LS3VERT · 04-29-2016, 05:23 PM

I'd probably make more power with 3", but my car is lowered 1" plus 19" wheels lower it even more. I was scraping everywhere I went. Cars on a wheel/tire combo close to stock shouldn't have the same problem.

NikolaiD · 05-04-2016, 10:57 AM

Can't wait until the new Engine Masters gets posted on YouTube:

http://www.motortrendondemand.com/de...haust-/279412/

I went 3", but I wanna see what they get.

NikolaiD · 05-16-2016, 11:40 AM

The episode is now on youtube:

opcode1300 · 05-16-2016, 12:49 PM

Quote:

Originally Posted by NikolaiD

The episode is now on youtube:

For us non-flash people.

https://youtu.be/_PVXvHkr-Vs

04-28-2016, 02:18 AM	#1
rmf26 rafiiic Drives: 2011 Camaro ss YSI vortech SC Join Date: Apr 2016 Location: beirut lebanon Posts: 26 View My Garage	2.5" exhaust enough?? Hey guys I currently own a 2.5" magnaflow exhaust system ... I was told recently that It would be a lot better to run a 3" magnaflow competition exhaust ... what gains should I expect? anyone ever ran this exhaust before is it tooo loud? ... My car is running a vortceh v7 supercharger with a 6.81 liter stroker kit

04-28-2016, 04:54 AM	#2
Homeless Man Homeless Life Chose Me Drives: LS3 (sold 4/21) Join Date: Nov 2014 Location: Streets of Philly Posts: 3,650	3inch will sound better/deeper and the sound carries more from what I've heard __________________ Pity a man in familiar places, who yet feels like a stranger.

04-29-2016, 03:23 PM	#6
pyroguy Started#gottalovethatblue Drives: ABM #831 Join Date: Apr 2013 Location: TN Posts: 6,919 View My Garage	It all depends on horsepower. If you are pushing some serious horsepower then 3" exhaust is a must. The average Camaro owner will be just fine with 2.5". __________________ '10 Camaro 2SS/RS \| Aqua Blue #831 of 3,903 \| Silver Stripes Check out my build thread

04-29-2016, 04:08 PM	#9
Pro Stock John Writer Drives: 2010 SS / 1967 Camaro Join Date: May 2009 Location: Chicago, IL Posts: 7,216	I have the Hooker Blackheart 1 7/8 + full 3" exhaust setup. No ground clearance issue but I'm not lowered. __________________ PROJECT HEAVY CHEVY Camaro Now: Mods for the Masses Part I \| Part II 13.15@106 1.95 \| 100% Stock 12.37@112 1.85 \| + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune 12.06@113 1.70 \| + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune 11.84@115 1.59 \| + 3.91s + Race Star 17x7 Fronts 10.90@125 1.47 \| + GPI VVT Cam + BW Ported Heads + CD 3800

04-29-2016, 04:55 PM	#10
USAFS197 Drives: 2018 Audi TT RS Join Date: Jan 2014 Location: Navarre, Florida Posts: 1,915	Considering the OP is running larger displacement and boost, I don't think 3" is going to hurt at all--if anything, you'll likely get more power and a different tone. __________________ 2018 Audi TT ▊RS 2.4X 0-60, 1.6X 60', 120+mph 1/8th, 4.XX 60-130, 150+mph traps on 255/35/18 R888R tires on the street (unprepped). 2019 Audi RS3 About as fast as the TT RS 2019 Camaro ZL1 1LE Sold 2018 Camaro SS 1LE Sold 2019 Corvette Z06 Sold 2021 Charger Hellcat Redeye Widebody Sold

04-28-2016, 11:08 AM	#4
Anthony @ LG Motorsports Drives: 1994 1LE / 2006 Z51 Corvette Join Date: Jul 2009 Location: Plano, TX Posts: 2,829	Super charged applications?? I wouldn't be surprised if you pick up quite a bit of power by going to 3" all the way. Assuming the car has headers on it now?

04-28-2016, 03:08 PM	#5
KGL35 Drives: 2011 RS/SS Join Date: May 2014 Location: St. Albert, Alberta Posts: 108	I am running that cat back with shorties and highflow cats, with a GT14 cam, it sounds awesome. Loud, deep and at idle is wicked cool. That being said it does have a draw back, 1500-2000 rpm on highways has a drone that is really loud. But I wouldn't change it for anything.

04-29-2016, 03:42 PM	#7
2012LS3VERT Drives: 2012 2SSRS Vert, Black w/M6 Join Date: Jan 2013 Location: Montgomery, AL Posts: 1,265	I make 700+ with my 2.5" NPP. I used to have a 3" but had ground clearance issues.

04-29-2016, 05:23 PM	#11
2012LS3VERT Drives: 2012 2SSRS Vert, Black w/M6 Join Date: Jan 2013 Location: Montgomery, AL Posts: 1,265	I'd probably make more power with 3", but my car is lowered 1" plus 19" wheels lower it even more. I was scraping everywhere I went. Cars on a wheel/tire combo close to stock shouldn't have the same problem.

05-04-2016, 10:57 AM	#12
NikolaiD Drives: 2002 M3, LS3, TR6060 Join Date: Mar 2016 Location: Chicago, IL Posts: 31	Can't wait until the new Engine Masters gets posted on YouTube: http://www.motortrendondemand.com/de...haust-/279412/ I went 3", but I wanna see what they get.