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03-22-2019, 06:20 PM
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#1 |
 Drives: 2018 hyper blue ZL1 1LE Join Date: Nov 2018
Location: Alabama
Posts: 165
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X pipe
Having my 18 zle modded by vengeance next month. Adding coated kooks with green cats, weaponx p&p blower, 103tb, rotofab big gulp and tune, etc. I like the npp and I am not interested in increasing the noise level. I have heard an arh full set up and it was too loud for my taste. Same with a full kooks catless set up. Too loud.
Is there an x pipe available that has a set of mufflers? I wouldn't mind adding an axle back later, but not at the expense of crazy db levels. I'm actually worried about the noise level with lt headers even with npp and green cats. Any ideas? |
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03-22-2019, 06:35 PM
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#2 |
Drives: Fast Join Date: Mar 2015
Location: Michigan
Posts: 3,696
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Kooks makes a straight X pipe that necks to 2.5" in the back to connect seamlessly with the stock NPP exhaust behind the rear axle. Stock NPP + Green cats is as quiet as you're going to get Headers to be on these cars without welding in something like a Borla 60608 muffler/resonator. I don't know what power you're going for but you want as little restriction as possible for power and temps. Nature of the beast.
This is something you should just ask Vengeance. Ron or David are who I've dealt with and they've always been extremely helpful and responsive. |
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03-23-2019, 12:12 AM
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#3 | |
 
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03-23-2019, 10:03 PM
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#4 |
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Drives: 2018 hyper blue ZL1 1LE Join Date: Nov 2018
Location: Alabama
Posts: 165
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Trying to keep things quiet without killing power. I like the npp, but concerned about restrictions. Was wanting a resonated or muffled mid pipe so that I could easily add an axle back later. Will likely stay with the coated kooks and green cats for now. I will add a cat back system later. I just figured it would be easy to do an axle back swap vs a full cat back on my quick jacks.
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03-24-2019, 09:43 AM
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#5 |
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902HP 858TQ
Drives: 2018 ZL1 A10 Join Date: May 2018
Location: New Jersey
Posts: 135
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I have kooks with green cats and it's only slightly louder than the stock setup. It was really hard to tell unless you have stock one next to you to compare it to. The X-pipe and stock muffler is not restrictive. You're not going to pick up any significant power by changing the X pipe or muffler unless you're making big power
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03-24-2019, 02:23 PM
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#6 |
   
Drives: 17 ZL1 Join Date: Mar 2017
Location: VA
Posts: 1,075
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I run kooks 2" with high flow cats to stock x-pipe and muffler. Its most certainly louder but not obnoxious at all. I wouldn't waste my money on an x-pipe or replace the crushed section unless your shooting for 800 + rwhp.
__________________
2017 ZL1 Coupe M6, Red Hot
Mods; AFE Pro 5R CAI, Kong Ported Blower and Snout, NW 103 TB, Griptech 2.31 Upper, Kooks 2",JMS Voltage Booster, Flex Fuel, Mighty Mouse CC,Jannetty Racing Tune, 680 rwhp  |
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03-24-2019, 03:28 PM
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#7 |
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Drives: 2018 hyper blue ZL1 1LE Join Date: Nov 2018
Location: Alabama
Posts: 165
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Thanks for the heads up guys. I am not shooting for big power. Just going through the bolt ons to see where she ends up. There's plenty of power now, I just can't leave well enough alone!
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03-25-2019, 12:46 AM
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#8 | |
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03-25-2019, 05:23 AM
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#9 |
Drives: 2018 ZL1 Garnet Red Tintcoat A10 Join Date: Jan 2019
Location: NY
Posts: 537
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Yes I agree HP anonymous is needed. These forums dont help i just keep buying stuff. The more i read the more i buy. I need help!! Can't stop!! Lol
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03-25-2019, 05:45 PM
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#10 | |
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Drives: 17 ZL1 Join Date: Mar 2017
Location: VA
Posts: 1,075
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Quote:
 so true...
__________________
2017 ZL1 Coupe M6, Red Hot
Mods; AFE Pro 5R CAI, Kong Ported Blower and Snout, NW 103 TB, Griptech 2.31 Upper, Kooks 2",JMS Voltage Booster, Flex Fuel, Mighty Mouse CC,Jannetty Racing Tune, 680 rwhp |
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03-25-2019, 06:15 PM
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#11 | |
     Drives: 2023 Black ZL1 Auto Join Date: Oct 2009
Location: FEMA Region 4
Posts: 2,935
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03-25-2019, 08:56 PM
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#12 |
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Emerald Coast Camaros
Drives: 2017 50th Camaro LT2/RS Join Date: May 2011
Location: Cview
Posts: 1,009
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for a axle back with x pipe that would rid the system of the factory trash can contact SOLO performance out on NY. they have single out or dual. Not too loud until you go WOT then it is....
__________________
2017 LT2/RS, 50th addition. Airaid CAI, Solo Performance Axle back, sunroof, Smoked Led Markers
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03-27-2019, 03:22 AM
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#13 | |
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Quote:
Step 2 - Realize that you dont have enough HP Step 3 - Realize that you need to buy more car stuff Step 4 - Realize that you have no more money in the bank till pay day Step 5 - you credit to buy what you want cause the money is coming in right Step 6 - Realize that you can trade you car in for the latest one Step 7 - Start to figure out a way to obtain new vehicle Step 8 - Secretly check out vehicle and tell wife you just looking and not to worry Step 9 - Payday Step 10 - Trade car in and drive away with new one feeling top of the world\ Step 11- Begin at step 1 |
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