Question about headers

Hadeszl1 · 02-22-2020, 03:57 PM

Hey guys I might be picking up a set of kooks 2” long tubes and my question is is there anyways to set up a way where I can keep my npp and not have to cut or weld anything ?

JonDaddy82 · 02-22-2020, 05:24 PM

Quote:

Originally Posted by Hadeszl1

Hey guys I might be picking up a set of kooks 2” long tubes and my question is is there anyways to set up a way where I can keep my npp and not have to cut or weld anything ?

Keep NPP? Yes.

Not cut or weld anything? No. All headers require at least some cutting/clamping/welding.

Hadeszl1 · 02-22-2020, 05:45 PM

Quote:

Originally Posted by JonDaddy82

Keep NPP? Yes.

Not cut or weld anything? No. All headers require at least some cutting/clamping/welding.

Thanks for the response I appreciate it. What would be the way to keep my npp then? Someone recommend I get the corsa mid pipe and use that with the kooks 2” does that sound right ?

JonDaddy82 · 02-22-2020, 06:12 PM

Quote:

Originally Posted by Hadeszl1

Thanks for the response I appreciate it. What would be the way to keep my npp then? Someone recommend I get the corsa mid pipe and use that with the kooks 2” does that sound right ?

Keeping the NPP is the easiest part. Only changing the exhaust BEHIND the rear axle will eliminate the NPP. Anything from the engine back to the rear axle is fair game.

Markoz28 · 02-22-2020, 07:42 PM

Lots of ppl do this. I have Kooks 2” with no cats and connected to the stock NPP exhaust.

Any shop worth their weight will know what to do.

Snowwolfe · 02-22-2020, 09:04 PM

Any hp gains with the headers without a tune?

Revalot · 02-22-2020, 09:11 PM

It will not run right without a tune and will set off codes, remember if you have a warranty it will be voided once you have headers and tune also ! Good luck you will be fine !

Hadeszl1 · 02-22-2020, 09:37 PM

Quote:

Originally Posted by Revalot

It will not run right without a tune and will set off codes, remember if you have a warranty it will be voided once you have headers and tune also ! Good luck you will be fine !

I will be doing pullies and a tune as well I also already have a intake but thanks for the Info and I’m not to worried about warranty

got a buddy over there

Hadeszl1 · 02-22-2020, 09:39 PM

Quote:

Originally Posted by JonDaddy82

Keeping the NPP is the easiest part. Only changing the exhaust BEHIND the rear axle will eliminate the NPP. Anything from the engine back to the rear axle is fair game.

So if I do the kooks with the corsa double x pipe I should still have my npp correct? Thanks for the responses guys

wanab · 02-23-2020, 02:59 PM

Quote:

Originally Posted by Hadeszl1

Hey guys I might be picking up a set of kooks 2” long tubes and my question is is there anyways to set up a way where I can keep my npp and not have to cut or weld anything ?

I installed Kook's 2" w/high flow green cats and Kook's 3" X pipe to the rear suitcase muffler. The cut to the stock exhaust was dictated by where the 3" Kook's X pipe ended which was just in front of the stock muffler suitcase. I added a wideband O2 bung on the front side of the drivers side cat for tuning and ethanol content/AF gauge. I also had the headers coated by Jet Hot.

*mlee* · 02-23-2020, 03:10 PM

Quote:

Originally Posted by Snowwolfe

Any hp gains with the headers without a tune?

Yes, but not near as much as it will with a tune.

Quote:

Originally Posted by Revalot

It will not run right without a tune and will set off codes, remember if you have a warranty it will be voided once you have headers and tune also ! Good luck you will be fine !

It will run fine without a tune... just leaving some HP on the table and the rear O2 sensor will set a CEL. Headers are going to void warranty anyway so might as well tune to get the full benefits.

Zigg L1 · 02-23-2020, 04:39 PM

Kooks could connect without welding but you will have to cut

SJFGTO · 02-23-2020, 05:27 PM

Total waste of considerable money to add headers with no tune. Drivability is effected and you leave significant HP on the table all along the curve un-tuned. Under certain conditions you also risk going into an excessively lean condition which can cause engine damage.

Juiced1 · 02-24-2020, 09:43 AM

Quote:

Originally Posted by Hadeszl1

So if I do the kooks with the corsa double x pipe I should still have my npp correct? Thanks for the responses guys

You could do this but there is a better option out there.

Just go with the Stainless Works long tubes. They run all the back to the factory NPP and replace everything else.

The Kooks and Corsa would have to be welded together. Any Xpipe that is designed to remove the rear cats will overlap with the headers connection pipes. So you'll need to cut the exhaust and weld it together. Cutting through 304 stainless is a pain too.

If you order the Stainless Works headers with full xpipe it all bolts right in place. You'll just need to make one cut in the back before the mufflers and then clamp it all together.

02-22-2020, 03:57 PM	#1
Hadeszl1 Drives: 2017 Chevrolet Camaro zl1 Join Date: Nov 2019 Location: Los Angeles Posts: 12	Question about headers Hey guys I might be picking up a set of kooks 2” long tubes and my question is is there anyways to set up a way where I can keep my npp and not have to cut or weld anything ?

02-22-2020, 09:04 PM	#6
Snowwolfe Drives: CTV5 V Blackwing on order Join Date: Feb 2020 Location: East TN Posts: 431	Any hp gains with the headers without a tune? __________________ 2022 CT5 V Blackwing with A10 2021 GMC Denali pickup with 6.2 and A10 2017 Ford Expedition

02-23-2020, 05:27 PM	#13
SJFGTO Oh Oh it's Friday Night! Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018 Location: Walton Woods Posts: 1,061	Total waste of considerable money to add headers with no tune. Drivability is effected and you leave significant HP on the table all along the curve un-tuned. Under certain conditions you also risk going into an excessively lean condition which can cause engine damage. __________________ 2018 Camaro ZL1 1LE NFG; ARH 2” headers, catless mids, ARH full exhaust, Lingenfelter 18% lower pulley, ATI Harmonic Balancer, Roto-fab CAI, EE-catch can, TM ported TB, NX Lid, BMR strut tower brace. Aeroforce dual pod interceptor gauges. Tuned by Vengeance Racing!!! 644 HP @ 6250 rpm / 689 trq @ 3660 rpm Four that wanna own me Two that wanna stone me One says she's a friend of mine...

02-22-2020, 07:42 PM	#5
Markoz28 Drives: 18 ZL1 nightfall grey A10 Join Date: Apr 2018 Location: RGV Texas Posts: 1,527	Lots of ppl do this. I have Kooks 2” with no cats and connected to the stock NPP exhaust. Any shop worth their weight will know what to do.

02-22-2020, 09:11 PM	#7
Revalot Drives: ZL1/1LE parts added Join Date: May 2018 Location: Somewhere around Texas pines tress and smooth asphalt Posts: 609	It will not run right without a tune and will set off codes, remember if you have a warranty it will be voided once you have headers and tune also ! Good luck you will be fine !

02-23-2020, 04:39 PM	#12
Zigg L1 Drives: 2018 ZL1 Garnet Red Tintcoat A10 Join Date: Jan 2019 Location: NY Posts: 537	Kooks could connect without welding but you will have to cut

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