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Old Feb 21, 2007 | 01:13 PM
  #41  
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Originally Posted by DSOM Z51
I don't know that I would fool with the B&B headers. To many other "better" options out there for about the same money, maybe a dollar two more, plus you get cats and more power.
Meh.. you guys are all clearly brainwashed. The gains posted are just from bolting on the headers and dont account for optimizing your entire setup. $1800 vs $950 isnt the same price, for the difference I could buy new l96 heads. Trying maxing out the tune stock, and then adding headers to see the real gains associated with adding them.. unfortunately no one has done so, so we have no real clue what any of the headers really add.

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Old Feb 21, 2007 | 01:31 PM
  #42  
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Originally Posted by bdking57
Meh.. you guys are all clearly brainwashed. The gains posted are just from bolting on the headers and dont account for optimizing your entire setup. $1800 vs $950 isnt the same price, for the difference I could buy new l96 heads. Trying maxing out the tune stock, and then adding headers to see the real gains associated with adding them.. unfortunately no one has done so, so we have no real clue what any of the headers really add.
Well, good luck with your experiment.

I commend you for your exploratory spirit to try something new. It is in this way, and through efforts such as the one you are making, that we truly learn if a certain modification is worthless or if there is actually something to it.

Though your headers are like no design I have ever seen in the offerings from other manufacturers who have been involved in racing of all types for decades, I await your results.

Good luck, but as far as what we do and don't already know about headers, it might be a good idea to give these two articles a read. The principles of header design, and what the effects of these designs are, are discussed in these articles.


http://www.carcraft.com/techarticles/header_basics/

http://www.popularhotrodding.com/tec...d_header_tech/

Good luck

Last edited by '06 Quicksilver Z06; Feb 21, 2007 at 01:36 PM.
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Old Feb 21, 2007 | 02:13 PM
  #43  
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great articles.. so its basically mentioned that a shortened collector impacts the tq under the curve or low speed tq but has no effect on high rpm operation or revs above peak tq (I plan to autox the car). I knew I was giving up something with this setup, but the compromises in some areas will pay off in others hopefully(sound!)

Originally Posted by DSOM Z51
Well, good luck with your experiment.

I commend you for your exploratory spirit to try something new. It is in this way, and through efforts such as the one you are making, that we truly learn if a certain modification is worthless or if there is actually something to it.

Though your headers are like no design I have ever seen in the offerings from other manufacturers who have been involved in racing of all types for decades, I await your results.

Good luck, but as far as what we do and don't already know about headers, it might be a good idea to give these two articles a read. The principles of header design, and what the effects of these designs are, are discussed in these articles.


http://www.carcraft.com/techarticles/header_basics/

http://www.popularhotrodding.com/tec...d_header_tech/

Good luck
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Old Feb 21, 2007 | 06:55 PM
  #44  
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Originally Posted by bdking57
Meh.. you guys are all clearly brainwashed. The gains posted are just from bolting on the headers and dont account for optimizing your entire setup. $1800 vs $950 isnt the same price, for the difference I could buy new l96 heads. Trying maxing out the tune stock, and then adding headers to see the real gains associated with adding them.. unfortunately no one has done so, so we have no real clue what any of the headers really add.

Dyno before and after adding LG Pro long tubes without a tune: gained 26 rwhp and 39 rwtq. My A/F's before and after were right around 12.8 to 13.2 so I didn't need a tune before or after. I believe the LG Pro's are the best header for our car, but you do pay for them. You have $950 invested in the B&B's. If you add 2 high flow cats and get them welded in, you'll be around $1250. You'll still have 2.5" mid section pipes and an H pipe. You save $550. However, you only save $200 over the American Racing headers with cats. If I had wanted to save money I'd definitely gone with the AMR's, they are a great deal.

I still think you'll want the Cats sooner or later. Most of the F-body guys run high flow cats with their headers because they say without them they sound like garbage trucks, way too much rasp.
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Old Feb 21, 2007 | 08:03 PM
  #45  
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B&B does manufacture an x-pipe mid section with high flow cats. The list price, however, is $643.00 .

http://www.bbexhaust.com/car/corvette/c6/
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Old Feb 22, 2007 | 12:18 AM
  #46  
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Originally Posted by glennhl
Dyno before and after adding LG Pro long tubes without a tune: gained 26 rwhp and 39 rwtq. My A/F's before and after were right around 12.8 to 13.2 so I didn't need a tune before or after. I believe the LG Pro's are the best header for our car, but you do pay for them. You have $950 invested in the B&B's. If you add 2 high flow cats and get them welded in, you'll be around $1250. You'll still have 2.5" mid section pipes and an H pipe. You save $550. However, you only save $200 over the American Racing headers with cats. If I had wanted to save money I'd definitely gone with the AMR's, they are a great deal.

I still think you'll want the Cats sooner or later. Most of the F-body guys run high flow cats with their headers because they say without them they sound like garbage trucks, way too much rasp.
i think you missed the point on needing to run bullets. lgs with bullets is just way to loud. these headers work with the prt section which will reduce rasp and drone
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Old Feb 22, 2007 | 12:36 AM
  #47  
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Originally Posted by bdking57
i think you missed the point on needing to run bullets. lgs with bullets is just way to loud. these headers work with the prt section which will reduce rasp and drone
Sorry, I never referred to bullets, just the headers. The point I was trying to make is that you can get 26 rwhp and 39 rwtq with just headers, nothing else.

Actually, I like the sound of my LG's with the stock catback.
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Old Feb 27, 2007 | 12:39 PM
  #48  
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Anyone able to come up w/pics or sound clips of the "PRT" yet??
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Old Feb 27, 2007 | 01:14 PM
  #49  
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Ill get around to the install this weekend.. sound clip will be headers+prt+bullets.. and ill make a point of posting it.
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Old Feb 27, 2007 | 02:52 PM
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sound clip would be nice but I would like to see hp and tq #s
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Old Feb 27, 2007 | 04:00 PM
  #51  
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Originally Posted by glennhl
I think everyone is afraid of them because of that very funny shaped collector doesn't look too efficient.
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Old Feb 27, 2007 | 06:37 PM
  #52  
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These B&B headers,plus LPE intake and lsportworks manifold, tune (Total $1900) will be producing more whp then the $1900 LGs. Same money spent.. discuss. Providing your only willing to spend $3000 on mods for your corvette, Im attempting to create a much better mod plan then that typically being followed.. Seeing all these sub 380whp cars with headers is making me ill.

Last edited by bdking57; Feb 27, 2007 at 06:40 PM.
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Old Feb 27, 2007 | 08:05 PM
  #53  
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Originally Posted by bdking57
These B&B headers,plus LPE intake and lsportworks manifold, tune (Total $1900) will be producing more whp then the $1900 LGs. Same money spent.. discuss. Providing your only willing to spend $3000 on mods for your corvette, Im attempting to create a much better mod plan then that typically being followed.. Seeing all these sub 380whp cars with headers is making me ill.
Are you doing a before and after dyno to prove your point? I wouldn't be too sure that you'll pick up over 30 rwhp. If you are sick seeing all the sub 380 rwhp cars with headers, then you shouldn't have gotten headers where even the manufacturer admits they only pick up 22 rwhp. The Kooks, LG's, and AMR's have all shown 25 to 30 rwhp. You are going to make up for the power loss by buying a better inlet and intake.

I am hoping that B&B were wrong and you pick up a lot more power than what they posted on their website. With the ported LS2 intake and the inlet, a tune, and a good set of headers should be worth about 40 rwhp.
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Old Feb 27, 2007 | 09:04 PM
  #54  
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Originally Posted by glennhl
Are you doing a before and after dyno to prove your point? I wouldn't be too sure that you'll pick up over 30 rwhp. If you are sick seeing all the sub 380 rwhp cars with headers, then you shouldn't have gotten headers where even the manufacturer admits they only pick up 22 rwhp. The Kooks, LG's, and AMR's have all shown 25 to 30 rwhp. You are going to make up for the power loss by buying a better inlet and intake.

I am hoping that B&B were wrong and you pick up a lot more power than what they posted on their website. With the ported LS2 intake and the inlet, a tune, and a good set of headers should be worth about 40 rwhp.
Without before and after results, who can know what you picked up.
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Old Feb 28, 2007 | 12:27 PM
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Originally Posted by glennhl
Are you doing a before and after dyno to prove your point? I wouldn't be too sure that you'll pick up over 30 rwhp. If you are sick seeing all the sub 380 rwhp cars with headers, then you shouldn't have gotten headers where even the manufacturer admits they only pick up 22 rwhp. The Kooks, LG's, and AMR's have all shown 25 to 30 rwhp. You are going to make up for the power loss by buying a better inlet and intake.

I am hoping that B&B were wrong and you pick up a lot more power than what they posted on their website. With the ported LS2 intake and the inlet, a tune, and a good set of headers should be worth about 40 rwhp.
I do all the installs myself.. not going to go through that. It will be pretty obvious basing it off the many other c6 z51 base dynos taken from the recent synergy dyno day... there is more then enough of a base sample... which is apx. 350whp to start. The bullets also gain a claimed 15whp over stock yet people arent intrested in running them with headers. 15+22 is 36whp?

Taking your car to a quality tuner will do more for it then buying the most expensive headers.
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Old Feb 28, 2007 | 12:38 PM
  #56  
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Originally Posted by bdking57
I do all the installs myself.. not going to go through that. It will be pretty obvious basing it off the many other c6 z51 base dynos taken from the recent synergy dyno day... there is more then enough of a base sample... which is apx. 350whp to start. The bullets also gain a claimed 15whp over stock yet people arent intrested in running them with headers. 15+22 is 36whp?

Taking your car to a quality tuner will do more for it then buying the most expensive headers.
Yea, I'm struggling with whether to tune my car or not. The local guy who tuned my 01Z28 says he's only getting more power on LS2's through A/F's not timing. Also, having an A6, you still can't remove TM. My A/F's have always been right around 13.0. I sent my dyno pulls to Charlie for a mail order tune and he said I didn't need one.
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Old Feb 28, 2007 | 02:40 PM
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As far as corvettes go, we dont have alot of watchdogs out there who area really analysing what the tuners are doing to our cars. If you want power... A 100 octane tune is a good investment.

Mail order tunes are a good deal.. but its a canned product based on the same sort of parameters factory tunes are . Your not going to see substantial gains based on your exact engine parameters unless your on the dyno getting your exact car tuned to perfection. The very fact that it can be called a tune is misleading.. you cant tune a piano over the phone. A mail order ecu flash is a better name.

Last edited by bdking57; Feb 28, 2007 at 02:44 PM.
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Old Feb 28, 2007 | 03:38 PM
  #58  
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Originally Posted by Lipps C5
sound clip would be nice but I would like to see hp and tq #s
I want the sound clip to see if the "PRT" gets rid of the lame "BLAAA-BLAAA-BLAAA-BLAAA-BLAAA-BLAAA" Sound at idle.

I want the pics of the inside of the PRT to see if it's basically a muffler, or what, and to see if it's crossed over.

-Tom
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Old Feb 28, 2007 | 03:44 PM
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Originally Posted by bdking57
.... The very fact that it can be called a tune is misleading.. you cant tune a piano over the phone. A mail order ecu flash is a better name.
Excellent analogy.
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Old Feb 28, 2007 | 04:39 PM
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Originally Posted by Tom400CFI
I want the sound clip to see if the "PRT" gets rid of the lame "BLAAA-BLAAA-BLAAA-BLAAA-BLAAA-BLAAA" Sound at idle.

I want the pics of the inside of the PRT to see if it's basically a muffler, or what, and to see if it's crossed over.

-Tom
Good questions.. first though, the PRT isnt a muffler.. the tubing goes straight through smooth all the way with no perforations. There are similiar pictures online showing the copy cay version that has the same design... that one is an x pipe..

I havent looked to confirm yet but I believe the PRT is an H pipe. I wont even go into the H pipe vs. X pipe debate... powerwise.. seems like an H pipe has a slight edge but is much louder with more drone.
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