07-08-2012, 12:39 AM | #29 |
Drives: 2012 ZL1 #165 Join Date: Apr 2009
Location: Switzerland (no longer Houston, TX) :-(
Posts: 479
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Well, the boost drops but what happened with the power(if tuned properly)
makes me wonder why you would even put headers on If you need the pulley to make up the lost boost... |
07-08-2012, 11:00 AM | #30 |
Perpetual Order
Drives: indeed Join Date: Jun 2012
Location: Texas Hill Country
Posts: 1,277
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as mentioned before, you can make more power with lower boost. Boost is only a measure of resistance/pressure in the intake system. It is not the same thing as CFM or amount of airflow.
Who cares if you have 20 psi of boost if the next guy makes more power with 10 psi because his engine intake and exhaust systems are that much more efficient. Besides, more boost means more heat, which also means less power. The only reason to swap pulleys to maintain boost is because the motor can take it, and if it can take it ("it" meaning cylinder pressures), then why wouldn't you do it? More boost does mean more power as long as it isn't too much due to heat or engine durability. Bottom line, headers make the system more efficient and you will still make more power even if there is a little less boost. |
07-08-2012, 11:32 AM | #31 |
Drives: 2012 ZL1 #165 Join Date: Apr 2009
Location: Switzerland (no longer Houston, TX) :-(
Posts: 479
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Thanks for the reply!
I don't recall ever seeing a dynochart with before/after results with headers only on a sc car... |
07-08-2012, 06:13 PM | #32 |
Happy_Dan
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I have SLP Long tubes with a pulley swap, tune and bigger injectors. Runs great and looks good too.
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07-09-2012, 09:56 AM | #33 |
DBLCHBY III
Drives: 15 1LE Join Date: Jun 2011
Location: Team Canada
Posts: 2,789
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did you dyno the car with everything done ?
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07-09-2012, 01:40 PM | #34 |
Happy_Dan
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There are other threads about my results so I don't want to go through it again, but I will get it dyno'd again locally to see what I have.
Wish I could give you a better answer but there was a lot of confusion over the dyno chart I posted and I didn't want to go back and bother SLP about it since it doesn't really matter to me. I can feel the difference and I love the sound. As soon as I get to a local dyno day event, I will post the results. |
07-10-2012, 02:37 PM | #35 |
Perma Grinning
Drives: 2012 Tom Henry Racing ZL1 Join Date: Feb 2012
Location: Schaumburg, IL
Posts: 452
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I have Stainless Works on my ZL1. . . waiting for break in to be complete to do a full tune.
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07-10-2012, 08:54 PM | #36 |
Envy
Drives: 2011 SGM 2SS/RS - Black hood/hockey Join Date: Aug 2011
Location: Renton, WA
Posts: 915
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Anybody running long tubes without cats or mufflers? I really want to know how that sounds on a V8 Camaro. :P
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07-10-2012, 09:32 PM | #37 | |
Drives: Both American Made Join Date: Feb 2008
Location: Texas
Posts: 781
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Quote:
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2012 ZL1 #213 M6 Black on Black 2013 ZL1 #2638 Convertible Auto 2010 Chevrolet Suburban 2011 GMC Seirra HD Denali |
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07-11-2012, 07:24 AM | #38 |
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From our testing, LT's are worth about 13-15RWHP with a .6psi drop in boost pressure......worth it in every way when adding a QUALITY set of LT's like Stainless Works or Kooks
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07-11-2012, 10:10 AM | #39 |
Drives: C6 Z06 Join Date: Jan 2010
Location: Dayton, MD
Posts: 1,645
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Nice mod! A bit more power. Less boost - less heat. Except that the LT's will render your ZL1 emissions illegal :\
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07-11-2012, 10:49 AM | #40 |
Perpetual Order
Drives: indeed Join Date: Jun 2012
Location: Texas Hill Country
Posts: 1,277
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only in nazi states like MD and CA.... man i lived in MD for 3 years with an 850 HP Z06 and it was HELL!!! lol. nothing legal about the car of course, but totally fine in texas.
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07-11-2012, 11:02 AM | #41 |
Drives: 2013 red Lingenfelter ZL1 Join Date: Apr 2012
Location: zionsville IN
Posts: 567
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rmyers, Sounds awesome!! What other mods do you have?
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07-11-2012, 11:03 AM | #42 |
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