Thanks avfrog.
Sounds like I will go with the Pro XS. I am not sure what size the Y pipe is until I get it Tuesday with the headers but I should be able to pick up the straight 3" pipe and the muffler.
I deffinately do not want to donate any more $ to the areas finest. I live in the sticks so it shouldnt be too bad.
I know that I have to take it for a ride with open headers. It would be a shame not to run around the block just once to say hello to the neighbors, lol.

 

Take your camera!

 

It's going to run like crap. - Seriously. You'll have no velocity with that set up and your exhaust gases will die inside the pipes. You'll see what I mean when you get thru with it. Your engine isn't pushing the power for that set up. I don't even think the lightning guys are going with a 3" off- road set up.

You might be able to tune it in somewhat, but I would definitely talk with a tuner first. Good sound comes from a well tuned in system, - I guess you would have to here and feel the difference to really know.

 

That doesnt sound good jbrew.
What can I do without a tune or what setup do you suggest with the LT pacesetter withthe pacesetter Y. Should I go with a 2.5 inch or 2.25 inch setup after the Y?

 

If you are running a single mid pipe, then 3" is a perfect balance. Period. Now if you were running true duals, then you would be better of with 2.25" or 2.5".

 

2.5 then 2.25. If your dead set on running no cats, yea that sounds better - allot better. You'll be able to push your exhaust out the tail pipe that way lol. Will sound better too.

Even better with High Flows if you don't plan on tuning any time soon.

Don't let the guy with 06 set you up, he has a different set up (heads and programming, even the factory program is different) and apparently doesn't know our factory tune.

If your unsure which way to go, - just go to the PHP site and search "best stock set ups" or like, -you can always call Troyer as well, ask for Mike or any available tech.

 

^ That will choke your exhaust system...

 

If I get the Borla muffler than I want to get the correct one.

I was going to go with the 3" but now I am not sure if I should go with 2.5".

Maybe I should go with the 2.5" after the Y. I am going to dump it in front of the back axle so will that may any difference? I would guess not but I am no pro at this, still a green horn.

 

If you were going to run tips - 3" mid pipe then Y into 2.5" tail pipes.

Since your dumping it under axle. 3" from Y to dumped after the muffler is a very healthy system.

A 2.5" mid pipe will maximize your very low end torque, but mid rpm range will suffer some. The 3" mid pipe is the best all around performing 2 into 1 system. There are a lot of people here running similar systems and love them!

If you are unsure now, wait and let a few more people jump in with there opinions...

 

Darren is a Technical Article Contributor... Where you at?

 

We don't need Darren, but yea, where's he at? Your right avfrog I was thinking duels for some reason, -I apologize.

Without cats, -at least Hi-flows, I'm not sure how to get away with that, (?)- without some tuning. You can probably do alright on sound, but you don't want a loud *** slug struggling to keep up with traffic either, -that gets old and annoying.

Iduno, - I can say, without cats, running my factory tune, original manifolds and 2.5" straight out I had lost enough low end to the point of being very noticeable. Mid range had a flat spot, wide open up in the rpms felt okay.

LT's + No Cats your going to lose some low end and move the power band further up into the rpms, - without tuning.

 

Sorry guys i've been quite busy lately and enjoying the warm weather as much as I can while its out. But everyone seems to have things well under control so i'm not needed too much. The 3" intermediate pipe to dual 2.5" tailpipes will sound and perform fine. Especially with that restricted OEM Y pipe gone. I wouldn't run a catless system without a custom tune for it. There is a loss, and a CEL, the tune will take advantage of the higher end advantage of no cats, and no CEL of coarse.

 

DarrenWS6,
My plan was to run the LT with the pacesetter Y, 3" intermediate pipe to the Borla offset 3" and dump it in front of the back axle.
To help prevent any codes I was going to do the gotts mod on the back two o2 sensors.
I will get a custom tune but will need to save up a bit for the $399+.
Will this setup get me moving or am I asking for a major headache???

 

Well it might be quite loud inside, a LT header system dumped, pretty dang loud. You may want to eventually run it over the axle, but it will bet you moving and satisfied. I could be wrong and you may love it as is.

 

I will give it a try and if it drives me crazy than I will shoot it out the back.

Thanks for all the input.