Want my NPP a little louder - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Cleveland1LE · 06-19-2014, 05:55 PM

I have a 1LE with NPP and already pulled the fuse but I still want it a little louder. Suggestions? Which headers work best? Anyone know of a shop in Cleveland, OH area for install? thanks.

WHAMMO · 06-19-2014, 06:02 PM

A good upgrade is high flow cats; big jump in sound and at least 15-20hp. You really can feel it.

As for headers, depends if you want them US made or no. Top quality ARH, SW, KOOKS then oversea made and quality too; TSP, stainless power, etc.

Go with 1 7/8 or 2". 2 " is what I have and the sound is crazy. I have high flow cats..with no cats it will smell but sound meaner.

Indydriver · 06-19-2014, 06:06 PM

Volume up, but most importantly, power +42/35 and throttle response much better (with VRam and tune).

Best advice I took from this forum: start with headers then work your way back. Get the power first, then if you need it louder look at midpipes and then mufflers.

damian559 · 06-19-2014, 06:09 PM

Quote:

Originally Posted by WHAMMO

A good upgrade is high flow cats; big jump in sound and at least 15-20hp. You really can feel it.

As for headers, depends if you want them US made or no. Top quality ARH, SW, KOOKS then oversea made and quality too; TSP, stainless power, etc.

Go with 1 7/8 or 2". 2 " is what I have and the sound is crazy. I have high flow cats..with no cats it will smell but sound meaner.

What does it smell like? Gas?

Kado047 · 06-19-2014, 07:21 PM

Quote:

Originally Posted by damian559

What does it smell like? Gas?

Racecar

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AG1LE · 06-19-2014, 07:26 PM

high flow cats will do the trick...of course headers with HF cats would be even better...

cornerspeed92 · 06-19-2014, 07:42 PM

This sounds like something i would be interested in. I know i want headers soooooooo bad, but im not doing anything til i get her paid off, but i think high flow cats might be ok. So they really do the trick?

Kado047 · 06-19-2014, 07:45 PM

I'm debating the same thing. NPP sounds awesome but it'd be awesome a touch louder. Slippery slope that will inevitably end with me voiding the warranty.

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cornerspeed92 · 06-19-2014, 08:01 PM

Changing to high flow cats will void the warranty?

ROD_SS · 06-19-2014, 08:15 PM

Longtube headers, high flow cats, fuse pull and the NPP = awesome!

rdrfronty · 06-19-2014, 09:00 PM

I too am worried about the warranty, but I just refuse to wait years and years to do some standard bolt-ons. So just this week I just received - ARH 1 7/8" headers, hiflow cats, CAI intake, Apex scoop, and water bottle. Also got an Apex Catch Can. That I installed last week. But the others I am waiting about another month or so since I only have 950 miles so far. Once I hit 1500+ miles, I'm changing my oil and doing all the other mods. Then heading to a tuner.
Back to the OP's statement, with the NPP and headers/hiflows - that should be a sweet sounding combo. I'm really looking forward to that beefier sound AND the extra 50whp or so I should get for the all my mods.

shippingguy · 06-19-2014, 09:05 PM

Remember that the dealership/GM would have to prove that the "particular mod" had to cause the damage. Technically just because you do bolt on mods does not mean your warranty is void. The consumer is protected by Magnusson-Moss Court Case.

http://www.free-lemon-law-guide.com/...n-moss-act.php

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AG1LE · 06-19-2014, 09:08 PM

Headers require a tune (=warranty issues), HF cats do not. The HF cats alone make a big difference in sound, especially with fuse pull.

cornerspeed92 · 06-19-2014, 09:22 PM

Quote:

Originally Posted by AG1LE

Headers require a tune (=warranty issues), HF cats do not. The HF cats alone make a big difference in sound, especially with fuse pull.

Any suggestions on which to run?

06-19-2014, 05:55 PM	#1
Cleveland1LE 2014 2SS, RS, 1LE Yellow Drives: 2014 2SS Camaro Join Date: Mar 2014 Location: Cleveland, OH Posts: 35 View My Garage	Want my NPP a little louder I have a 1LE with NPP and already pulled the fuse but I still want it a little louder. Suggestions? Which headers work best? Anyone know of a shop in Cleveland, OH area for install? thanks.

06-19-2014, 06:02 PM	#2
WHAMMO Drives: 13' 1LE Join Date: Apr 2012 Location: Canada Posts: 2,653	A good upgrade is high flow cats; big jump in sound and at least 15-20hp. You really can feel it. As for headers, depends if you want them US made or no. Top quality ARH, SW, KOOKS then oversea made and quality too; TSP, stainless power, etc. Go with 1 7/8 or 2". 2 " is what I have and the sound is crazy. I have high flow cats..with no cats it will smell but sound meaner. __________________ 13' 1LE Old setup: TSP 231-236/Tick 660/.105 PR, UDP, SW LT 2'' & HFC, stock NPP & H pipe, VR-DRX CAI, air scoop, Goertz1 manifold, 102mm BBK, 26" Toyo DRs, Forgestars R17x10 & F18x8, rear seat delete, remote Pat G tune Autocal, 7400 limiter, Spec Mini Twin. 91oct. 11.90@122.3, 0-60ft 2.0 / 11.99@123.6, 0-60ft 2.1 DA+819 ...519RWHP SAE Solid roller SBE LS3, FED, LLSR, 91oct, 605rwhp N/A. Tuned by Pat G. Build by me.

06-19-2014, 06:06 PM	#3
Indydriver Drives: '14 2SS/RS Vert 6M/KTU/NPP/DTA/ARH Join Date: Jan 2014 Location: Indianapolis Posts: 2,826	ARH LTs+HFC into OE Catback w/NPP Volume up, but most importantly, power +42/35 and throttle response much better (with VRam and tune). Best advice I took from this forum: start with headers then work your way back. Get the power first, then if you need it louder look at midpipes and then mufflers. __________________ Consensus is, by definition, a lack of leadership.

06-19-2014, 07:42 PM	#7
cornerspeed92 Drives: 2013 1SS 1LE Join Date: Jul 2012 Location: Colorado Posts: 4,188 View My Garage	This sounds like something i would be interested in. I know i want headers soooooooo bad, but im not doing anything til i get her paid off, but i think high flow cats might be ok. So they really do the trick? __________________

06-19-2014, 08:01 PM	#9
cornerspeed92 Drives: 2013 1SS 1LE Join Date: Jul 2012 Location: Colorado Posts: 4,188 View My Garage	Changing to high flow cats will void the warranty? __________________

06-19-2014, 07:26 PM	#6
AG1LE Drives: '14 1LE Join Date: Nov 2013 Location: NJ Posts: 2,438	high flow cats will do the trick...of course headers with HF cats would be even better...

06-19-2014, 07:45 PM	#8
Kado047 Drives: VW... soon to be a 1LE Join Date: May 2014 Location: Grand Rapids, MI Posts: 105	I'm debating the same thing. NPP sounds awesome but it'd be awesome a touch louder. Slippery slope that will inevitably end with me voiding the warranty. Sent from my iPhone using Tapatalk

06-19-2014, 08:15 PM	#10
ROD_SS Drives: 2013 1SS Camaro and a truck Join Date: Apr 2011 Location: San Antonio,TX Posts: 1,081	Longtube headers, high flow cats, fuse pull and the NPP = awesome! __________________ ADM tuned (465 rwhp / 442 torque) Mods- CAI, kooks long tube headers, & ADM stage 2 cam

06-19-2014, 09:00 PM	#11
rdrfronty Drives: 2019 ZL1 1LE CRUSH Join Date: Jun 2013 Location: Texas Posts: 298	I too am worried about the warranty, but I just refuse to wait years and years to do some standard bolt-ons. So just this week I just received - ARH 1 7/8" headers, hiflow cats, CAI intake, Apex scoop, and water bottle. Also got an Apex Catch Can. That I installed last week. But the others I am waiting about another month or so since I only have 950 miles so far. Once I hit 1500+ miles, I'm changing my oil and doing all the other mods. Then heading to a tuner. Back to the OP's statement, with the NPP and headers/hiflows - that should be a sweet sounding combo. I'm really looking forward to that beefier sound AND the extra 50whp or so I should get for the all my mods.

06-19-2014, 09:05 PM	#12
shippingguy Drives: 2024 Black ZL1, M6 Join Date: Mar 2014 Location: Murrieta, CA Posts: 353	Want my NPP a little louder Remember that the dealership/GM would have to prove that the "particular mod" had to cause the damage. Technically just because you do bolt on mods does not mean your warranty is void. The consumer is protected by Magnusson-Moss Court Case. http://www.free-lemon-law-guide.com/...n-moss-act.php Sent from my iPhone using Tapatalk __________________

06-19-2014, 09:08 PM	#13
AG1LE Drives: '14 1LE Join Date: Nov 2013 Location: NJ Posts: 2,438	Headers require a tune (=warranty issues), HF cats do not. The HF cats alone make a big difference in sound, especially with fuse pull.