12-01-2017, 11:02 PM | #1 |
Drives: 2019 Camaro 1LE Shock Candy Join Date: Mar 2016
Location: Garage
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Who is running open headers at track?
Who is running open headers at track?
Ok, I have added cut outs right after the headers for the track. Talking to my tuner, he says the car will be hard to tune or act up differently because of open headers. He states the air flow caused by open headers will upset the tune. He wants the cut outs moved to the rear diff area. But we all know the cut outs near the headers yield better HP in that position. Is there any truth to his thoughts? For the guys running open headers at the track what are your thoughts and how is your performance. My thoughts is just have two different tunes. 1. Street 2. Track open cut outs with NOS
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LT4 1.7 Supercharger snout ported & Meth
103 Katech TB, KATECH Custom Heads TSP Headers, Spec P Super Twin Clutch, TSP EL C7 CAM Diamond Piston & Manley Rods, Roto Fab Big Gulp BTR Push Rods,LS7 Lifters, ARP, FI Chiller, Kirkey Seats SJM Line Lock, Hurst Pistol Grip. 747/739 RWHP street tune - 821/794 RWHP track tune 98 octane. 2014 Mini Cooper countryman S All4 M6 daily driver |
12-02-2017, 11:04 PM | #2 |
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That is just bad a$$.
I am only running open NPP flaps and that makes a ton of noise with LTs.
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12-03-2017, 12:02 AM | #3 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
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No electric?
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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 |
12-03-2017, 07:19 AM | #4 |
Drives: 2019 Camaro 1LE Shock Candy Join Date: Mar 2016
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Nope, no electric. It’s just for track, so no temptation to through the switch street wise. Plus even with the more expensive electronic units that open my installer says they will not last and will have numerous wire melt downs.
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LT4 1.7 Supercharger snout ported & Meth
103 Katech TB, KATECH Custom Heads TSP Headers, Spec P Super Twin Clutch, TSP EL C7 CAM Diamond Piston & Manley Rods, Roto Fab Big Gulp BTR Push Rods,LS7 Lifters, ARP, FI Chiller, Kirkey Seats SJM Line Lock, Hurst Pistol Grip. 747/739 RWHP street tune - 821/794 RWHP track tune 98 octane. 2014 Mini Cooper countryman S All4 M6 daily driver |
12-03-2017, 08:14 AM | #5 |
Drives: 2016 Camaro 2SS, 6spd M Join Date: Aug 2016
Location: Lexington, SC
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I like it! I have plans to do the same, or possibly run them to a custom side-exit. Those non-electric ones are so much cheaper, too!
You may need to look at other cars/engines for more info on running them that short, though. I don't recall seeing any LT1s like that. I think it's more down to a lack of space under there than anything else, but I could be wrong. You could *possibly* angle them to flow the hot gases into a venturi tunnel and on to a diffuser, generating extra downforce. |
12-03-2017, 09:21 AM | #6 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
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The issue with running them that close is the O2 sensors.
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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 |
12-03-2017, 12:50 PM | #7 |
Drives: 2016 SS Convertible Join Date: Jan 2017
Location: Myrtle Beach
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I’m no expert, particularly with the new(er) direct injection motors, but in the LS motors you typically will lose a lot more torque than what you’ll gain in HP, unless you are no longer stock bore. I had dual electric cutouts on my 4th ge at the headers and it proved true in my instance, but it was just a big cam car. I enjoyed them for car shows and cruising to show off that cam lope though! For performance and tuning consistency I’d agree with the tuner and move them back. That extra pipe provides a lot of back pressure consistency.
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12-03-2017, 01:37 PM | #8 |
Drives: 2013 SS Join Date: May 2013
Location: DFW
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Yeah unless its a big cubic inch High compression build I would move them out back near the trans area
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12-03-2017, 04:00 PM | #9 |
Drives: 2016 camaro ss Join Date: Oct 2010
Location: Spring, TX
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Pretty sweet man. I put some electric cutouts after the x-pipe and before the rear axle. I swear they are just as loud as open headers on my 4th gen. It's crazy
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2016 camaro 2SS hyper blue/Kalahari, A8, MRC, NPP, sunroof, SW headers through axleback, Circle D 3600rpm TC, Pray ported IM/TB, E85
Sold: 2002 Z28, NBM, M6, 460rwhp, 2009 HHR SS RIP : 2002 WS6 Black, A4, 355rwhp |
12-03-2017, 08:07 PM | #10 | |
Drives: 2019 Camaro 1LE Shock Candy Join Date: Mar 2016
Location: Garage
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Quote:
But tuner says one thing and exhaust guys says another. Flip a coin. One thing I do want to address, when the cut outs are capped you get a almost a header leak sound with the exhaust air pushing into that area hitting the cap. Trying to think off of something to put in that empty cavity and attach to the cap with a few screws. Anyone heard of anyone making something for that?
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LT4 1.7 Supercharger snout ported & Meth
103 Katech TB, KATECH Custom Heads TSP Headers, Spec P Super Twin Clutch, TSP EL C7 CAM Diamond Piston & Manley Rods, Roto Fab Big Gulp BTR Push Rods,LS7 Lifters, ARP, FI Chiller, Kirkey Seats SJM Line Lock, Hurst Pistol Grip. 747/739 RWHP street tune - 821/794 RWHP track tune 98 octane. 2014 Mini Cooper countryman S All4 M6 daily driver |
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12-03-2017, 11:07 PM | #11 | |
Drives: 2016 camaro ss Join Date: Oct 2010
Location: Spring, TX
Posts: 1,127
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Quote:
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2016 camaro 2SS hyper blue/Kalahari, A8, MRC, NPP, sunroof, SW headers through axleback, Circle D 3600rpm TC, Pray ported IM/TB, E85
Sold: 2002 Z28, NBM, M6, 460rwhp, 2009 HHR SS RIP : 2002 WS6 Black, A4, 355rwhp |
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12-03-2017, 11:28 PM | #12 |
Drives: 2019 Camaro 1LE Shock Candy Join Date: Mar 2016
Location: Garage
Posts: 1,755
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Thanks man, I will check the gasket on the cap. Fingers crossed. Has to be, there was no header/exhaust leak before.
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LT4 1.7 Supercharger snout ported & Meth
103 Katech TB, KATECH Custom Heads TSP Headers, Spec P Super Twin Clutch, TSP EL C7 CAM Diamond Piston & Manley Rods, Roto Fab Big Gulp BTR Push Rods,LS7 Lifters, ARP, FI Chiller, Kirkey Seats SJM Line Lock, Hurst Pistol Grip. 747/739 RWHP street tune - 821/794 RWHP track tune 98 octane. 2014 Mini Cooper countryman S All4 M6 daily driver |
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