how much would these help

[DBYRD]

http://www.pfyc.com/store/merchant.mv?Scre...gory_Code=GPEXH
i would love to add these once i get my full exhaust system installed(month or so). anyone know around the HP gain i would experience with the LQ4?

[99Silverado12]

good idea, but a local guy around here has told me that they don't do too much for these trucks, and possibly more harm than good. i dont know though, just word of mouth...

[bud8fan]

i had this exact same one on my sts right after the turbo...huge gains with it open instead of going thru the tailpipe....

[DamnYankee]

Stupid question of the day...if you're running TRUE duals, you would have to have two cutouts, one before each muffler, correct? And if you were running a dual in/dual out setup, you would only need one, just prior to the muffler?

Are there any downsides to these? Seems like some pretty good advertised gains for the price.

Maybe my questions are answered elsewhere...haven't searched yet. If so, sorry...!

[Red03SilSS]

<div class='quotetop'>QUOTE(Moze &#064; Aug 9 2006, 03&#58;56 PM) [snapback]60584[/snapback]</div>

Stupid question of the day...if you&#39;re running TRUE duals, you would have to have two cutouts, one before each muffler, correct? And if you were running a dual in/dual out setup, you would only need one, just prior to the muffler?

Are there any downsides to these? Seems like some pretty good advertised gains for the price.

Maybe my questions are answered elsewhere...haven&#39;t searched yet. If so, sorry...&#33;
[/b]

You are correct about the true dual and single pipe cutout question. The only downside i might see towards this is you take the backpressure off the motor. Am I mistaken or are motors suppose to have some sort of back pressure?? I may be wrong. I know in Allstar55566 had his 4.3 we took the exauhst off and it ran like shit.

[bulldog5.3]

I have one on my truck right before my Borla. You probably don&#39;t gain alot if any HP, but if you like a loud exhaust the QTEC is the way to go.

L8R,
Brent

[DamnYankee]

ok, so why did Bud8 have good results and bulldog didn&#39;t? Does the turbo come into play?

I&#39;m also curious about the back-pressure question...

[Red03SilSS]

i&#39;m pretty sure the turbo had alot to do with bud8&#39;s results.

[DamnYankee]

Crap. I was getting my hopes up. Sounded like an inexpensive way to get some extra hp.

Bulldog, did you see good results from that BBK TB? I&#39;ve been eyeing those...

[Red03SilSS]

<div class='quotetop'>QUOTE(Moze &#064; Aug 9 2006, 04&#58;18 PM) [snapback]60590[/snapback]</div>

Crap. I was getting my hopes up. Sounded like an inexpensive way to get some extra hp.
[/b]

Go to the page and it show results. It says 13 HP on an LS1 T.A. So it might help some. But it looks like to me you have to buy the cut out for 140? and then the electronic opener for 109. or something like that. so it ends up being around 250 plus shipping. You can get you some pacesetter LT headers for 289.