View Poll Results: Is open headers worth the effort?
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- 42. You may not vote on this poll
Results 1 to 17 of 17
Thread: 1/4 miler racing
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06-26-2006, 09:13 AM #1
- Join Date
- May 2006
- Location
- minneasota
- Age
- 39
- Posts
- 11
black- 2001 Trans am ws6
1/4 miler racing
I am going racing this weekend and still can decide if i should run open headers or not so this poll will decide thanks for the feed back.
~01 trans am ws6 black
~bore 10 over
~proformance cam
~dynatech headers
~3inch Flow master cat back system
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06-26-2006, 10:11 AM #2
define what you mean by effort? If you are going to take your whole catback off then its not. but if you want to spend 50 dollars and have a cutout welded in then yes, it would be worth it.
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06-26-2006, 10:19 AM #3
junk that C/B
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06-27-2006, 01:33 PM #4
Open headers might help upper rpm power -but will kill off low rpm power. Since you have to launch at lower rpm with most of these cars (2-3,000) you will need the broader power band of the full exhaust. Just my guess without knowing everything about what you're doing.
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06-28-2006, 05:16 PM #5
Install a cutout. I took off my flowmaster catback and installed a 12-inch glass pack that dumps right before the rear axle and it sounds so much better and runs a heck of a lot harder. It sounds so much better.
Last edited by 98Z-28Camaro; 06-29-2006 at 04:34 PM. Reason: Repeated myself
Black 98 Z-28, whisper air lid, ported polished descreened maf, slp smooth bellow, modified tb, 04 gto plug wires, ngk TR6 plugs, Megan underdrive pulley, cold fusion nitrous kit, k&n, removed cats, glass pack , casper o2 simulators, 3.73 gears, Burnt up 4l-60e, drilled and slotted rotors,
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06-28-2006, 07:11 PM #6
between flows and open headers i'd def go open...flowmasters flow like duece
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06-28-2006, 07:36 PM #7
Throw the Flowmaster in the trash and buy a good catback.
Last edited by x-40oz-x; 06-28-2006 at 07:38 PM.
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07-04-2006, 02:31 PM #8
- Join Date
- Jul 2006
- Location
- Lubbock, TX
- Posts
- 13
def not worth the effort
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07-08-2006, 07:30 AM #9
- Join Date
- Jul 2006
- Location
- Possum Squat, Ky
- Age
- 68
- Posts
- 24
'02 blue, '85 black&gold- 02 Firehawk #723,85 T/A
Made the mistake of installing my 2&half'' cutouts in my cat replacement pipes. Think reversion caused a miss in first gear that sounded like a stutter box! Too close to the front o2 sensors. I put a 4'' system on and dont worry about the cutouts anymore but, would install an elect. dump before going over the axle on a 3' system.
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07-08-2006, 07:46 AM #10
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07-08-2006, 10:34 AM #11
- Join Date
- Jul 2006
- Location
- Possum Squat, Ky
- Age
- 68
- Posts
- 24
'02 blue, '85 black&gold- 02 Firehawk #723,85 T/A
I have lofty goals. Do u run cats @ the track? Mine runs quicker without. Muffler when racing? Not me. Who needs the backpressure? I grafted a 12" by 4" pipe to the SLP 3" Y pipe and run it open. No exhaust past that point while racing and no codes. There's alot of volume @ 6 grand.
I trailer to the track. But if I didn't... cutout4me.
On the street with full exhaust (cats, over the axle and DynoMax 4" Race Muff) the sound is much sweeter and satisfying than the stock SLP dual dual.
Have u read the cutout article that IU has about cutouts?
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07-08-2006, 02:32 PM #12
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07-18-2006, 07:23 PM #13
- Join Date
- Jun 2006
- Location
- nebraska
- Age
- 37
- Posts
- 20
white- 2002 camaro z28
my bodys ls1 has flow masters and a cut out. he had i dynoed and he got an extra 11 horse at the rear wheels if its that import for 11 horse than yes
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07-19-2006, 11:27 AM #14
post up your times.......
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04-25-2007, 12:20 PM #15
- Join Date
- Feb 2006
- Location
- Galveston, TX
- Age
- 45
- Posts
- 328
NBM- '98 Ram Air Formula
I gained 18 hp with my cutout open compared to my old Flowmaster. I didn't believe it but I have the dyno sheet to prove. That gain was at peak in the high RPM range which is where you are at most of the time in the 1/4 mile.
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04-27-2007, 08:22 AM #16
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05-28-2007, 05:06 PM #17
- Join Date
- Jan 2007
- Location
- Knoxville, TN
- Posts
- 1,095
B2300 (Fluffy) Retired- Plain-Jane Dodge Truck
Go to the track with closed exhaust. Make a couple of passes. Record ET, conditions, etc. Open the exhaust. Make a couple of passes. Record ET, conditios, etc.
Or listen to all the people here and get 10 different opinions - 9 of them obviously wrong.
Good luck.
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