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.

[DBYRD]

<div class='quotetop'>QUOTE(Red03SilSS &#064; Aug 9 2006, 04&#58;01 PM) [snapback]60585[/snapback]</div>

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.
[/b]

that and a few other things haha like not having the cats installed, and running just a glasspack for a while full throttle alot. not to mention no tuning for the O2 sensors think that threw off something, and a worn distributor gear may have been why she ran like shit before she quit on me. cool thing is that truck beat a lot of vehicles in its day, and now its getting new life, cant wait for some ponies&#33;&#33;&#33; gosh its gonna be hard babying it till i get that tranny redone. brandon u need someone to work for u? like wanna make this part of the family a lil richer? i can sell a ketchup popsicle to a lady in white gloves. come on what do u say?

[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.

[bud8fan]

<div class='quotetop'>QUOTE(Red03SilSS &#064; Aug 9 2006, 04&#58;16 PM) [snapback]60589[/snapback]</div>

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

yes the turbo came into play....the 3" single tail pipe i had in the stock location from the turbo had enough noticable back psi off the turbo that when the cutout was open that you could tell a diffrence big time.....