Thinking about straight pipes
Post Fiend
Joined: Aug 2006
Posts: 20,099
Likes: 7
From: Yorkton Sask
if there's nothing else done to the truck, its a waste of time and noise. if you are/have a reputable CAI, and tuner, straight pipe is ok, provided you don't go too big with your pipe, and make sure you integrate a "X" pipe or "H" pipe in there to keep the flow more even between the sides. remember that a tune will need to be written to keep the O2 sensors from throwing codes and CEL's...
lots of guys will spout backpressure and legal issues...
lots of guys will spout backpressure and legal issues...
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Junior User
Joined: Sep 2006
Posts: 50
Likes: 0
From: Dana N.C.
Ok thanks. I have a friend thats pretty high up in the custom tunning world that is getting me a tuner lined up. I just like the sound. Legal issues are just more waisted thoughts. Thanks for the info though.
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,604
Likes: 148
From: SE Georgia
you do lose backpressure and torque...and yes, the cops can/will write you tickets in certain areas
straight pipes don't gain you anything but noise. You can get better performance results using a catback system
just depends on how much money you want to spend
straight pipes don't gain you anything but noise. You can get better performance results using a catback system
just depends on how much money you want to spend
Post Fiend
Joined: Aug 2006
Posts: 20,099
Likes: 7
From: Yorkton Sask
biggest thing i stress is to match your intake velocity with your exhaust velocity. this done properly with a X pipe will be a good system. you don't "lose" any torque at all. if the intake is matched to the exhaust, nothing will be lost. it may feel like it, but it has actually just changed the torque curve to a higher RPM than stock/catback... Leaving the 4 cats in there and running duals without mufflers wouldn't be a bad thought either...
Senior User
Joined: Dec 2006
Posts: 383
Likes: 1
From: Ohio
It would sound great, while attaining the 4 cats as stated above. As for the center mid pipe the x will give you a more raspy sound, vs an H will give you a more true "muscle car " sound. You could also put 2 high flow cats on with a new catback, this will also make it sound awesome. There are many avenues that you can choose. Its hard to choose sometime. lol hope this helps. 
Post Fiend
Joined: Nov 2001
Posts: 7,698
Likes: 4
From: Neenah, Wisconsin
While you may think that the legal questions are wasted thoughts...keep in mind epa fines for removing cats off a vehicle (or even swapping in high flows with low enough mileage or age) can get you a 25,000 dollar fine......Go ahead and put in straight pipes...but i'd leave the cats....
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Junior User
Joined: Sep 2006
Posts: 50
Likes: 0
From: Dana N.C.
Thanks for all the info. I had always planed on leaving the cats in place. I should have mentioned that. I was going to take out the y pipe where the two come together and start my duals there. I had also planned on putting a x pipe about mid ways back. I think it will sound good. Once again thnks for all your help, and info.
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Senior User
Joined: Apr 2006
Posts: 360
Likes: 2
From: Cherokee Co. GA.
Thanks for all the info. I had always planed on leaving the cats in place. I should have mentioned that. I was going to take out the y pipe where the two come together and start my duals there. I had also planned on putting a x pipe about mid ways back. I think it will sound good. Once again thnks for all your help, and info.
Senior User
Joined: Oct 2008
Posts: 276
Likes: 0
From: Denmark,WI
where can you get a good affordable catback system??
Postmaster
Joined: May 2008
Posts: 2,703
Likes: 3
From: La Vergne, TN
he was talking bout next tuesday. since when he posted this was on Wednesday.
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Junior User
Joined: Sep 2006
Posts: 50
Likes: 0
From: Dana N.C.
Yeah nfl is right. The soonest they could get me in was this coming tuesday. But i will put a sound clip up on you tube and i'll post a link up on here for you all to here it. Thanks once again.