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Old Apr 20, 2020 | 12:59 AM
  #1  
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Default Exhaust mods

Hey all. I picked up a 2014 Z51 Stingray last week. A6. 19500 miles. Love the car. It is amazing. It does not have the performance exhaust though and is too quiet for me. I don’t want it obnoxious but wouldn’t mind it being a bit louder and a little more performance is always good. Any recommendations? Maybe some less expensive options for now and save for a new exhaust system down the line? Thank you in advance for you replies.
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Old Apr 20, 2020 | 01:40 AM
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There is NO less expensive Now !!!!

1) Look for USED American Racing, Kooks , Texas Speed or another well fitting well built Headers...

2) Rear, Read, Read these forum pages to decide what Brand, Style, Sound of USED Muffler System
You "Think" you'd like....

3) Im also thinking a Used NPP factory Muffler System could be made to work in your NON NPP Car ????



ARH 3" Catted X-Pipe

ARH ! 7/8" Stainless



ARH 3" Exhuast Pipes Reduced to Fit the 2 1/2" NPP Grand Sport Mufflers



ARH 3" mated to 2 1/2" NPP over the axle pipes

Last edited by CamarosRus; Apr 20, 2020 at 01:45 AM.
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Old Apr 20, 2020 | 02:42 AM
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Used set of npp mufflers are the cheapest option. usually $200 - $400 a pair. The npp valves are normally open and the sound will always be loud. Most for sale do not include actuators but that is ok because your cars computer system cannot be modified to make them work. They also should get you that extra 5hp advertised. I went with AWE afm valve back system and is very obnoxious, but pleasing to me. All aftermarket systems are quite expensive.
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Old Apr 20, 2020 | 06:22 AM
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start with the X pipe and see if that works for you...

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Old Apr 20, 2020 | 07:33 AM
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https://www.holley.com/brands/hooker...s_and_h_pipes/








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Old Apr 20, 2020 | 09:57 AM
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Originally Posted by cowboy casey
start with the X pipe and see if that works for you...
this is the quickest, easiest and cheapest thing to start with.
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Old Apr 20, 2020 | 10:02 AM
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Will an x pipe make any difference with a non npp exhaust?
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Old Apr 20, 2020 | 02:12 PM
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Originally Posted by Maxpowers
Will an x pipe make any difference with a non npp exhaust?
Yes, it will be louder because you are removing the extra set of CAT's in the stock x pipe..
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Old Apr 20, 2020 | 06:08 PM
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Originally Posted by Ffox
Hey all. I picked up a 2014 Z51 Stingray last week. A6. 19500 miles. Love the car. It is amazing. It does not have the performance exhaust though and is too quiet for me. I don’t want it obnoxious but wouldn’t mind it being a bit louder and a little more performance is always good. Any recommendations? Maybe some less expensive options for now and save for a new exhaust system down the line? Thank you in advance for you replies.
AWE off road Xpipe with pup cat delete...get it NOW...our government has forced the stop in manufacturing...just enough for me...2015 Z51 npp...best of luck...by the way...no codes thrown...only the main front cat's are monitored....tons and tons of discussions here on the forum.
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Old Apr 20, 2020 | 07:42 PM
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Can weld in some Magnaflows, plus xpipe
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Old Apr 21, 2020 | 02:03 PM
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Any smog issue or warranty issues going to X-pipe?
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Old Apr 21, 2020 | 02:23 PM
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Originally Posted by Ffox
Any smog issue or warranty issues going to X-pipe?
I say no, but I've never tested the warranty. You "might" get caught up in a smog issue if they do physical inspections (taking off the tunnel plate). I have not heard that stock motors + mid-pipe has created a failed emissions. YMMV.
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Old Apr 25, 2020 | 04:44 PM
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I doubt it will, and/or, will never get caught. I don't believe there is anything in the CARB documentation that states an "xpipe" is not emissions compliant. There would have to be, because it's simply just re-routing exhaust.

I've ran xpipes for years on various LS cars, and never had a problem with emissions in southern california, where I had a ls1 TA, but technically speaking, I don't even know if it was actually legal or not!
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Old Apr 25, 2020 | 04:51 PM
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I put Corsa Sport axle back on mine and love it. No extra HP but the sound is perfect, for me at least. Completely different vibe when driving the car now. 2019 Stingray manual tranny convertible mag ride
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Old Apr 25, 2020 | 08:56 PM
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OP get yourself a X-pipe without the back cats & call it a day for now that will get you a bet more sound out of the car. But if you have the money get you a set of KOOKS 1 7/8 LT headers and a x pipe with the stock mufflers. Robert
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