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01-02-2012, 03:08 PM
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#1 |
 
Drives: 2010 2SS and 2011 LS Join Date: Aug 2011
Location: Western burbs of the Motor City
Posts: 628
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Open header question
I need some opinions on something I have been wondering about for this next season at the track. I am wondering if any of you run open headers at the drag strip. I am contemplating using a straight pipe 16-18" long off my high flow cats. I would make a piece of my stock pipes removable on each side for doing this and make the change at the track before racing. Right now my exhaust is LT headers with high flow cats into the stock pipes to the axle and GMPP axle back from there. I am wondering if I do this will I pick any HP or actually lose a little. I am assuming the ecm should compensate for the extra flow with this configuration and then reset with the stock pipes.
Dan
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Around here we like baseball, hot dogs, apple pie, and Chevrolet
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01-02-2012, 04:49 PM
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#2 |
   Drives: 2010 camaro 2SS LS3 Join Date: Aug 2011
Location: Denver
Posts: 1,334
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you have to have 18 inches beyond the o2 sensor, or it will get invalid readings. the weight loss will be more of a benefit than the power added
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01-02-2012, 05:55 PM
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#3 |
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Drives: 2010 2SS and 2011 LS Join Date: Aug 2011
Location: Western burbs of the Motor City
Posts: 628
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Ok, my thinking is that the power gain just won't be worth the trouble, the 02 sensor is a non factor they are tuned out. Thanks Parag
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Around here we like baseball, hot dogs, apple pie, and Chevrolet
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01-02-2012, 06:15 PM
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#4 |
      
Drives: 2010 camaro Join Date: Aug 2009
Location: port st lucie ,florida
Posts: 4,273
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def not gonna help you, add the electric cutouts if you want, but many have tested the diff on the cutouts and there is almost no gain..
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01-02-2012, 06:31 PM
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#5 |
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Drives: 2010 2SS and 2011 LS Join Date: Aug 2011
Location: Western burbs of the Motor City
Posts: 628
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Thanks Mike, I'll save myself the work and leave it as is. I had just never seen anyone ask that question before so I figured I'd ask.
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Around here we like baseball, hot dogs, apple pie, and Chevrolet
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01-03-2012, 07:30 PM
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#6 |
Drives: 2010 aqua blue SS/RS M6 Join Date: Feb 2010
Location: plainfield, IL
Posts: 2,706
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Dyno tested or track tested? You never know unless you try, the wieght removal would be nice and you never know you might pick up another MPH. I may try this myself at some point. I had the best exhaust money can buy on my olds, still picked up a tenth with the dumps open, even though I was told I would not loose any power though my exhaust. Full 3" x pipe with spintech pro street mufflers.
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10.91 at 122 H/C stock block N/A
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01-04-2012, 12:29 AM
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#7 |
 
Drives: flintstone mobile Join Date: Dec 2011
Location: Dark area of your mind
Posts: 79
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removing restrictions helps .. but if it isnt restricting .....removing it doesnt help.. make sense ? the factory exhaust flows well..... you need to move a lot more air to max it out
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01-04-2012, 07:14 AM
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#8 | |
Drives: 2010 IOM 1SS M6 Join Date: Jun 2011
Location: NC
Posts: 557
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Quote:
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01-09-2012, 03:41 PM
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#9 |
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Account Suspended
Drives: White 2010 RS/SS Join Date: Dec 2009
Location: San Diego
Posts: 672
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You will see gains for sure.
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