Do headers actually make you faster?

Clos.95 · 09-05-2019, 03:06 PM

Hi guys, been having the itch to buy a set of speed engineering headers probably the 1 7/8s just for better fitment but if anybody has feedback on the 2’ let me know. I plan on staying just a bolt on car for a long time currently have a Rotofab intake and cat delete pipes and a flex fuel tune, haven’t hit the track yet to get a new time with the mods but stock did 7.8 @90.5 in the 1/8 and a 12.1@114.5 in the 1/4 I’m hoping to get into the 11s with my current set up.
But the question at hand is do you guys think long tube headers will actually make me faster? I know on the dyno they’ll make a bit more power 10-20whp more than just catdeletes but how much faster does that actually make you?
Has anybody ran cat deletes then headers and get times for both? I’ve heard it’s only around 1/2 a tenth to .1 max and paying $1000 for .1 isn’t worth it IMO. Thanks for the feedback

7speed · 09-05-2019, 04:35 PM

Hmmm, headers with cats I cut .2

oldman · 09-05-2019, 07:24 PM

about right, tune has to work too. You will get a little more with no cats (.24) and say .1 with front cat delets. Seems to be a good ballpark.

SJFGTO · 09-05-2019, 08:27 PM

Headers will require a tune. Should pick up 25-30 HP. Yes, you will be quicker and faster.

Snowblind · 09-05-2019, 09:07 PM

I have a 10 second timeslip with the stock manifolds (NA), they may add a few ponies but you can buy other mods to help compliment your setup. Don't ignore Weight reduction and good DA, they will show solid gains too.

jwaked · 09-06-2019, 09:06 AM

you went 12.1 Bone stock? are you manual o auto?Thanks

Quote:

Originally Posted by Clos.95

Hi guys, been having the itch to buy a set of speed engineering headers probably the 1 7/8s just for better fitment but if anybody has feedback on the 2’ let me know. I plan on staying just a bolt on car for a long time currently have a Rotofab intake and cat delete pipes and a flex fuel tune, haven’t hit the track yet to get a new time with the mods but stock did 7.8 @90.5 in the 1/8 and a 12.1@114.5 in the 1/4 I’m hoping to get into the 11s with my current set up.
But the question at hand is do you guys think long tube headers will actually make me faster? I know on the dyno they’ll make a bit more power 10-20whp more than just catdeletes but how much faster does that actually make you?
Has anybody ran cat deletes then headers and get times for both? I’ve heard it’s only around 1/2 a tenth to .1 max and paying $1000 for .1 isn’t worth it IMO. Thanks for the feedback

Wirthit · 09-12-2019, 08:25 AM

Soo... cat delete is good for .10, headers with cats .20, and headers no cats .25???

Juiced1 · 09-12-2019, 08:52 AM

The stock manifolds on the LT motors are pretty decent but we're still picking up 30+rwhp with long tubes and a tune. That's power you'll feel and be rewarded with at the track. Track times vary but you can easily drop .2/.3. These cars are already pretty quick and it's harder to drop your times the faster you are. Dropping a couple tenths when you're in the 13s is easy. When you're in the low 12s/high 11s its a bit harder.

Mighty Mouce · 09-12-2019, 10:48 AM

Long Tube headers are good for 15-20 hp...correct?

KingLT1 · 09-12-2019, 10:54 AM

Half the gains of LT headers is from deleting the stock primary cats.

Cat deletes are worth 10-15whp, Long tube headers alone are worth 15whp. Do both at the same time then yes 25-30whp gain. Do headers and high flow cats, then you might see 15-20whp.

The biggest restriction on these cars is the primary cats where they neck down under 2" right below the flange that connects the factory header to the cat pipe.

SJFGTO · 09-12-2019, 12:01 PM

Quote:

Originally Posted by KingLT1

Half the gains of LT headers is from deleting the stock primary cats.

Cat deletes are worth 10-15whp, Long tube headers alone are worth 15whp. Do both at the same time then yes 25-30whp gain. Do headers and high flow cats, then you might see 15-20whp.

The biggest restriction on these cars is the primary cats where they neck down under 2" right below the flange that connects the factory header to the cat pipe.

The tune, which is essential with long tubes and/or cat deletes, is responsible for much of the HP increase and, of course, drivability. I doubt cat deletes alone are 15 HP on most dynos. 5-7 maybe.

KingLT1 · 09-12-2019, 02:30 PM

Yes I would assume most know a tune is required...

I have seen supercharged cars only gain 18-20whp with Long tube headers over cat deletes.

Brandon Hill only picked 1 tenth with LTH's over cat deletes at the track with his NA GPI Heads/Cam car that ran 10.4's in the 1/4mi at the time.

wnta1ss · 09-13-2019, 06:48 AM

The only dyno test that I recall seeing for an almost-stock SS with just adding primary cat deletes and a tune was a gain of about 10 or 11 hp, this was TSloper a few years ago.

Tests posted on the forum of long tube headers with high-flow cats, and of course a tune, seemed to gain about 15 to 25 hp, on a stock engine without forced induction.

This much hp should gain a tenth or 2, but, if you are still on the runflats, whether you can use the extra power to run that much quicker is unknown.

09-05-2019, 03:06 PM	#1
Clos.95 Drives: Black 1SS Join Date: Dec 2018 Location: Los Angeles Posts: 103	Do headers actually make you faster? Hi guys, been having the itch to buy a set of speed engineering headers probably the 1 7/8s just for better fitment but if anybody has feedback on the 2’ let me know. I plan on staying just a bolt on car for a long time currently have a Rotofab intake and cat delete pipes and a flex fuel tune, haven’t hit the track yet to get a new time with the mods but stock did 7.8 @90.5 in the 1/8 and a 12.1@114.5 in the 1/4 I’m hoping to get into the 11s with my current set up. But the question at hand is do you guys think long tube headers will actually make me faster? I know on the dyno they’ll make a bit more power 10-20whp more than just catdeletes but how much faster does that actually make you? Has anybody ran cat deletes then headers and get times for both? I’ve heard it’s only around 1/2 a tenth to .1 max and paying $1000 for .1 isn’t worth it IMO. Thanks for the feedback

09-05-2019, 04:35 PM	#2
7speed Drives: 21 SS Join Date: Oct 2017 Location: Dallas Posts: 322	Hmmm, headers with cats I cut .2 __________________

09-05-2019, 07:24 PM	#3
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,316	about right, tune has to work too. You will get a little more with no cats (.24) and say .1 with front cat delets. Seems to be a good ballpark. __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.

09-05-2019, 08:27 PM	#4
SJFGTO Oh Oh it's Friday Night! Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018 Location: Walton Woods Posts: 1,061	Headers will require a tune. Should pick up 25-30 HP. Yes, you will be quicker and faster. __________________ 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...

09-05-2019, 09:07 PM	#5
Snowblind Drives: '16 2SS / '05 SRT10 Ram / '65 bu Join Date: Dec 2015 Location: Philthy Posts: 978	I have a 10 second timeslip with the stock manifolds (NA), they may add a few ponies but you can buy other mods to help compliment your setup. Don't ignore Weight reduction and good DA, they will show solid gains too. __________________ H/C SBE 9.80@140 powered by Texas Speed

09-12-2019, 08:25 AM	#7
Wirthit Drives: 2017 camaro ss Join Date: May 2017 Location: Il Posts: 25	Soo... cat delete is good for .10, headers with cats .20, and headers no cats .25???

09-12-2019, 08:52 AM	#8
Juiced1 Account Suspended Drives: 2012 2SS CAMARO 45th Join Date: Apr 2011 Location: St. Charles, IL Posts: 18,663	The stock manifolds on the LT motors are pretty decent but we're still picking up 30+rwhp with long tubes and a tune. That's power you'll feel and be rewarded with at the track. Track times vary but you can easily drop .2/.3. These cars are already pretty quick and it's harder to drop your times the faster you are. Dropping a couple tenths when you're in the 13s is easy. When you're in the low 12s/high 11s its a bit harder.

09-12-2019, 10:48 AM	#9
Mighty Mouce Banned Drives: Camaro Join Date: Apr 2017 Location: US Posts: 422	Long Tube headers are good for 15-20 hp...correct?

09-12-2019, 10:54 AM	#10
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,786	Half the gains of LT headers is from deleting the stock primary cats. Cat deletes are worth 10-15whp, Long tube headers alone are worth 15whp. Do both at the same time then yes 25-30whp gain. Do headers and high flow cats, then you might see 15-20whp. The biggest restriction on these cars is the primary cats where they neck down under 2" right below the flange that connects the factory header to the cat pipe. __________________ 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

09-12-2019, 02:30 PM	#12
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,786	Yes I would assume most know a tune is required... I have seen supercharged cars only gain 18-20whp with Long tube headers over cat deletes. Brandon Hill only picked 1 tenth with LTH's over cat deletes at the track with his NA GPI Heads/Cam car that ran 10.4's in the 1/4mi at the time. __________________ 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

09-13-2019, 06:48 AM	#13
wnta1ss Drives: 2017 Camaro 1SS Join Date: Aug 2016 Location: NH Posts: 1,692	The only dyno test that I recall seeing for an almost-stock SS with just adding primary cat deletes and a tune was a gain of about 10 or 11 hp, this was TSloper a few years ago. Tests posted on the forum of long tube headers with high-flow cats, and of course a tune, seemed to gain about 15 to 25 hp, on a stock engine without forced induction. This much hp should gain a tenth or 2, but, if you are still on the runflats, whether you can use the extra power to run that much quicker is unknown.

User Name		Remember Me?
Password