Best Axle Back (Corsa NPP vs Flowmaster NPP)

oneslick8 · 02-17-2021, 07:52 PM

I am in the market for a axle back and I am not sure which one to go with.

I really like both Corsa Extreme (NPP) and the Flowmaster American Thunder (NPP).

I wanted to know if anyone here has heard the two in person? If so what are your thoughts?

Just to let you know I will not being doing anything else to the exhaust besides the axle back system.

enzia35 · 02-17-2021, 08:42 PM

I mean, you're going from bottom of the barrel to top of the line...

I have a Borla ATAK axleback on mine.

oneslick8 · 02-17-2021, 08:53 PM

Quote:

Originally Posted by enzia35

I mean, you're going from bottom of the barrel to top of the line...

I have a Borla ATAK axleback on mine.

Yes I know they sit on two different side of the scale but I like the deep base tone of the American Thunder but that Corsa has more of fuller sound. They both sound good to me.

I heard the Borla ATAK and they sound great as well. There decent options out which makes it a little tough on deciding on a system.

enzia35 · 02-17-2021, 08:57 PM

Lots of people have said the S-Type is deeper than the ATAK.

Staves · 02-17-2021, 11:20 PM

Borla S-type is awesome. Love it.

Aaron07 · 02-18-2021, 04:31 AM

Quote:

Originally Posted by enzia35

I mean, you're going from bottom of the barrel to top of the line...

I have a Borla ATAK axleback on mine.

I disagree. Flowmaster is not bottom of the barrel. A proven quality name in exhaust. There are much worse out there. Not liking the sound is one thing...

avalonandl · 02-18-2021, 05:31 AM

I get so many people that tell me they love the sound of my stock NPP and although I would like to "refine" it I will keeep my $ in the bank for a Corvette C8.

KingLT1 · 02-18-2021, 07:55 AM

I have the Flowmaster NPP and it's pretty good. No real complaints and it was priced reasonable. It does have a significant difference in sound between open and closed. However I decided to order the Corsa NPP since CSP has/had priced a bit better. The Flowmaster has a super deep tone and sounds good but I have always liked Corsa sound. Had the NPP version been available when I first was in the market for exhaust, I would of likely went that route from the start.

Far as a review on the Corsa...well that is going to be a bit. I ordered it on December 9th and I am still awaiting shipment.

Far as stock Npp. Yes I agree it sounds good, just a little on the quiet side for my taste. When you do any exhaust mods( cat deletes or headers) the stock suitcase muffler gets raspy sounding part throttle or I would have kept it.

oneslick8 · 02-18-2021, 05:20 PM

Quote:

Originally Posted by KingLT1

I have the Flowmaster NPP and it's pretty good. No real complaints and it was priced reasonable. It does have a significant difference in sound between open and closed. However I decided to order the Corsa NPP since CSP has/had priced a bit better. The Flowmaster has a super deep tone and sounds good but I have always liked Corsa sound. Had the NPP version been available when I first was in the market for exhaust, I would of likely went that route from the start.

Far as a review on the Corsa...well that is going to be a bit. I ordered it on December 9th and I am still awaiting shipment.

Far as stock Npp. Yes I agree it sounds good, just a little on the quiet side for my taste. When you do any exhaust mods( cat deletes or headers) the stock suitcase muffler gets raspy sounding part throttle or I would have kept it.

Please keep me posted when they do come in? Would like to know what you think of both.

wmancil · 04-23-2021, 02:41 PM

I have a 2018 RS V6. If I go with the Flowmaster do I need to worry about codes getting thrown or check engine light?

enzia35 · 04-23-2021, 03:57 PM

Quote:

Originally Posted by wmancil

I have a 2018 RS V6. If I go with the Flowmaster do I need to worry about codes getting thrown or check engine light?

Generally a well installed exhaust won’t throw codes.

M1nd64m3 · 04-23-2021, 09:45 PM

I have a flowmaster npp exhaust and the quality is garbage. The screws came out of the npp valve plate and the plate got wedged back in the exhaust. Did a warranty claim last may and they were going to replace it, then just completely stopped answering my emails. Today I finally had enough of it and was able to free the plate and pull it out, realized there’s no way to get a new plate on there since it was bolted in from the muffler side then the muffler welded on. I finally got the full exhaust sound back but now the npp function is useless. I’ll never buy another flowmaster exhaust, so disappointed.

Chris C 1SS 1LE · 04-25-2021, 02:00 AM

I'd have bought the Corsa if there was an NPP option when I purchased my Borla pipes. Quality stuff. Borla does sell the valved outside pipes separately and I do have those (long story) just in case they quit.

I like the tips better on the Corsa as well. Exhaust is personal and having had my share of cat back systems over the years, buy what you like but get quality stuff.

goman08 · 04-25-2021, 03:37 AM

I have the flowmaster NPP and like it, no issues as well. If money weren't an issue I would go corsa NPP

02-17-2021, 07:52 PM	#1
oneslick8 Drives: 2016 Mustang, (Camaro SS soon) Join Date: Jan 2021 Location: California Posts: 16	Best Axle Back (Corsa NPP vs Flowmaster NPP) I am in the market for a axle back and I am not sure which one to go with. I really like both Corsa Extreme (NPP) and the Flowmaster American Thunder (NPP). I wanted to know if anyone here has heard the two in person? If so what are your thoughts? Just to let you know I will not being doing anything else to the exhaust besides the axle back system.

02-17-2021, 08:42 PM	#2
enzia35 Drives: '16 Garnet Red 1SS Join Date: Mar 2014 Location: College Station, TX Posts: 3,450	I mean, you're going from bottom of the barrel to top of the line... I have a Borla ATAK axleback on mine. __________________ '16 Camaro 1SS '18 Miata GT Gone: '01 Camaro, '14 Camaro, '90 Miata

02-17-2021, 08:57 PM	#4
enzia35 Drives: '16 Garnet Red 1SS Join Date: Mar 2014 Location: College Station, TX Posts: 3,450	Lots of people have said the S-Type is deeper than the ATAK. __________________ '16 Camaro 1SS '18 Miata GT Gone: '01 Camaro, '14 Camaro, '90 Miata

02-17-2021, 11:20 PM	#5
Staves Drives: women crazy Join Date: Aug 2020 Location: CA Posts: 698	Borla S-type is awesome. Love it. __________________ ‘19 1SS A10, Borla S-type Non-NPP-SOLD

02-18-2021, 05:31 AM	#7
avalonandl Drives: 2019 ZL-1 Join Date: Feb 2009 Location: Troy, MI & Naples, FL Posts: 2,019	I get so many people that tell me they love the sound of my stock NPP and although I would like to "refine" it I will keeep my $ in the bank for a Corvette C8. __________________ 2019 ZL-1 Acquired 4/23/21 at 6300 miles. Riverside Blue, A10, PDR. Traded in 2017 2SS with 6M and 32k miles. Continental Extreme Contact Sports. Now has 10,000 miles... 2012 Yukon XL Denali w/ 6.2 AWD

02-18-2021, 07:55 AM	#8
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,796	I have the Flowmaster NPP and it's pretty good. No real complaints and it was priced reasonable. It does have a significant difference in sound between open and closed. However I decided to order the Corsa NPP since CSP has/had priced a bit better. The Flowmaster has a super deep tone and sounds good but I have always liked Corsa sound. Had the NPP version been available when I first was in the market for exhaust, I would of likely went that route from the start. Far as a review on the Corsa...well that is going to be a bit. I ordered it on December 9th and I am still awaiting shipment. Far as stock Npp. Yes I agree it sounds good, just a little on the quiet side for my taste. When you do any exhaust mods( cat deletes or headers) the stock suitcase muffler gets raspy sounding part throttle or I would have kept it. __________________ 2016 NFG 1SS A8 Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA

04-23-2021, 02:41 PM	#10
wmancil Drives: 2018 Chevrolet Camaro RS (current) Join Date: Apr 2021 Location: St. Augustine, FL Posts: 7	I have a 2018 RS V6. If I go with the Flowmaster do I need to worry about codes getting thrown or check engine light? __________________ 2018 Camaro RS - current 1976 Corvette - sold 1979 Formula Firebird - sold 1970 Camaro SS - sold 1978 Firebird - sold 1974 Nova - sold

04-23-2021, 09:45 PM	#12
M1nd64m3 Drives: 2016 camaro ss Join Date: Sep 2015 Location: Chicagoland Posts: 24	I have a flowmaster npp exhaust and the quality is garbage. The screws came out of the npp valve plate and the plate got wedged back in the exhaust. Did a warranty claim last may and they were going to replace it, then just completely stopped answering my emails. Today I finally had enough of it and was able to free the plate and pull it out, realized there’s no way to get a new plate on there since it was bolted in from the muffler side then the muffler welded on. I finally got the full exhaust sound back but now the npp function is useless. I’ll never buy another flowmaster exhaust, so disappointed. Attached Images

04-25-2021, 02:00 AM	#13
Chris C 1SS 1LE Drives: 2017 1LE Join Date: Nov 2017 Location: Brooks, GA Posts: 697	I'd have bought the Corsa if there was an NPP option when I purchased my Borla pipes. Quality stuff. Borla does sell the valved outside pipes separately and I do have those (long story) just in case they quit. I like the tips better on the Corsa as well. Exhaust is personal and having had my share of cat back systems over the years, buy what you like but get quality stuff. __________________ '17 Bright Yellow 1LE. PDR, STB, !CAGS Borla 60606, 11925. Tony Mamo ported TB, ROTOFAB, !Sound Tube Last edited by Chris C 1SS 1LE; 04-25-2021 at 02:01 AM. Reason: clarity

04-25-2021, 03:37 AM	#14
goman08 Drives: 2018 2SS Join Date: Mar 2018 Location: Oahu, HI Posts: 8	I have the flowmaster NPP and like it, no issues as well. If money weren't an issue I would go corsa NPP

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