07-06-2020, 09:40 AM | #1 |
Drives: 2018 camaro 2ss Join Date: Nov 2018
Location: Riverside CA
Posts: 93
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Headers before and after dyno
can you guys do me a favor? Post your dyno sheets for gains from installing LT headers. Just ordered some and started looking through here and see lots of confusion. Some people claiming 35whp which sounds like too much and others saying only 10whp which is not worth it.
Thanks ahead of time |
07-06-2020, 09:59 AM | #2 |
Drives: 2017 Silverado/2017 ZL1 Join Date: Aug 2019
Location: Jax/Palatka FL
Posts: 1,090
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don't have dyno numbers but I don't think headers by themselves are going to do much of anything, especially without a tune.
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07-06-2020, 11:02 AM | #3 |
Drives: 2018 camaro 2ss Join Date: Nov 2018
Location: Riverside CA
Posts: 93
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I have some bolt ons and e85.
Asking for dyno sheets or just gains in general side note: running headers without a tune is kinda wild to me. would run rough |
07-06-2020, 12:01 PM | #4 |
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The way I see it, there are few numbers to look at vs. stock.
1. Headers-only (though you'll need to disable rear O2's if catless) 2. Tune only 3. Headers+tune Most of the time people post dynos following a LTH install with a tune included, so it's not a really good indicator of the performance gains. I'd also like to see a comparison with primary cat deletes. |
07-06-2020, 12:29 PM | #5 | |
Drives: like an old lady Join Date: Jun 2012
Location: indiana
Posts: 2,395
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Quote:
i highly suggest ethanol and a tune with headers, otherwise one is simply throwing money away. i did full exhaust, no cats and ethanol. stock tb and airbox. no baseline dyno but the car noticeably picked up. educated guess - around 6 mph. whatever that translates to on a dyno. ill hit a track up soon to verify. it’s an 18 1LE, still full weight.
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2016+ camaro: everyone’s first car
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07-06-2020, 12:40 PM | #6 |
Drives: 1SS Summit White 6 speed Join Date: Jul 2017
Location: Gainesville GA
Posts: 579
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Jannety posted a bunch of before and after dynos for almost all the bolt on mods about 3 years ago
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16 1SS M6 White
Magnuson 2.3 Heartbeat Roto Fab Solo Performance Cat deletes and Axleback Hurst short shifter #'s coming soon Riaction coilovers 1LE sway bars BMR mm BMR chassis brace Flow one 19" wheels wrapped in Mickey Thompsons 02 Z28 M6 35th anniversary 80k miles T-tops Leather Bolt ons Joy to drive this classic every day! Daily Driver |
07-07-2020, 06:30 AM | #7 | |
Drives: 2017 Camaro 1SS Join Date: Aug 2016
Location: NH
Posts: 1,692
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Quote:
Think some members have posted their Kooks headers with high flow cats before and had reported about 21 to 25 hp gains. Have not seen any data on the race car setup (completely catless). As for just cat deletes, one test showed nothing without tuning, but after he tuned, he had gained about 10 or 11 hp, those were primary cat deletes, so he still had the secondary cats in place. Also I agree with Redline_2ss that installing headers but not tuning for them does not make a lot of sense. Seems to me that, if you just want noise, you could just do a muffler delete or something to make it loud. |
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07-07-2020, 07:30 AM | #8 |
Drives: 2016 Camaro SS Join Date: Sep 2018
Location: Bartlett, TN
Posts: 1,121
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No dyno sheet but my baseline was 388 rwhp and after headers, E85, Rotofab and tune it was 432 rwhp.
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07-07-2020, 10:00 AM | #9 |
Drives: 21 SS Join Date: Oct 2017
Location: Dallas
Posts: 322
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Guy on youtube just got kooks headers and green cats and dynoed his otherwise stock C8 Vette and only gained like 5hp and 8tq. They claimed 20, he is disappointed but he likes the sound at least.
As far as Camaro I wouldn't get headers as my only mod since your not trying to tune. If you are trying to keep warranty you probably get at least same amount of gains for less money by ported tb or 95 tb, ported stock intake mani and rotofab.
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07-07-2020, 10:40 AM | #10 | |
Drives: SS A8, NPP, Red Hot Join Date: Jan 2019
Location: Toledo, OH
Posts: 583
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07-07-2020, 11:02 AM | #11 |
Drives: 2018 camaro 2ss Join Date: Nov 2018
Location: Riverside CA
Posts: 93
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headers isnt the only mod I have. Currently have other bolt ons and e85. Just want the car a little louder and gain more powah baby. Was just curious as to what people were really gaining since some people were saying 10 which didnt sound like enough to me and others were saying 50 which is too much. I'll be happy with like 25-30 RWHP gain.
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07-07-2020, 11:56 AM | #12 | |
Drives: 21 SS Join Date: Oct 2017
Location: Dallas
Posts: 322
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Shiiiiiet, go ahead then, probably 10-15 gain with retune would be my guess.
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07-07-2020, 12:46 PM | #13 |
Drives: 2017 Camaro 1SS M6 (SOLD) Join Date: Oct 2016
Location: 19518
Posts: 402
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Here is my dyno sheet, mind you I have a Whipple setup. There are a couple variables here, but considering the changes, to me it wasn't worth the investment in parts, good thing I installed myself.
Before: Cat delete pipes Boral ATAK full exhaust Stock TB Standard Roto-FAB DRY After: Kooks 2" catless Borla ATAK full exhaust NW 103 TB Big Gulp Dry Gain = 33.71/23.51 by adding Kooks 2", NW 103 TB & Big Gulp
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2017 1SS M6 Hyper Blue Metallic NPP, MMR 228 Z/28 replica wheels, Front: 20 x 9, Rear 20 x 11
Stock: 416hp/427tq, 12.21 @ 116.80 Modified 02/2019: Whipple SC w/ 3.500 pulley, LT4 fueling, NW 103 TB, Roto-Fab Big Gulp, Kooks 2" jet coated, full Borla ATAK exhaust, DSS axles, Gforce driveshaft. Tuned by EFX Tuning 688hp/632tq Best 1/4 to date: 10.705 @ 131.92 |
07-08-2020, 04:46 PM | #14 | |
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Drives: 2018 2SS Redline Join Date: Jan 2019
Location: Florida
Posts: 85
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Quote:
That's a chunk of $$$ for 33 HP. And you've got a blower. I'd be surprised at anything more than 10-15 HP on a NA setup. |
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