i have a cut-out on my truck and i did really like it, but i did lose a little of my low end power but gain top end and it sounds great.
But yesterday i got to some serious offroading yesterday and learn that a cut-out isnt ideal for offroading especially when going through water <img src="gr_sad.gif" border="0"> so ill be taking it off sone and getting a spintech exhaust with the X-pipe

 

I can't say I noticed a difference in power due to my uncalibrated "butt-o-meter" but what I did notice was that the truck didn't need to rev as hard just before shifting as it did with the much more restrictive stock system.

 

Awesome, thx for the input guys. I am starting to feel the mod itch again. <img src="gr_images/icons/wink.gif" border="0">

 

I know Patrick G dynoed his stock Tahoe muffler on the truck and then dropped the Muffler and dynoed..He picked up only 8 to 9 RWHP.. Thats not much power gain for all the noise the aftermarket cat-backs make and bucks they cost...In my opinion but I like things sneaky quiet.. I prefer cut -outs for the track but they only help my 6100 lb truck about .08 at the track..I mainly use them to scare mustangs.. <img src="gr_stretch.gif" border="0">

I do love my aftermarket intake. It was a lot cheaper than a cat-back and I got larger gains in ET from it ,,, even over my duel 3.5" cut outs..

 

Almost a tenth is worth it to me then. I figure thats around 8-10HP for $50 <img src="gr_stretch.gif" border="0">

My main concern now is I am seriously thinking about buying a Whipple for the truck so opening up the exhaust will be paramount and I just installed heads/cam on my T/A so I cant afford a cat-back for the truck. <img src="gr_stretch.gif" border="0">