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Old 11-07-2011, 09:01 AM
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Looking for new exhaust direction

I am looking at putting an exhaust system on this winter and wanting to check to see what everyone reccommends. My truck is stock except for a K&N intake. I am getting ready to order a coolant filter and slowly trying to bulletproof my truck as money allows. I cleaned my ERG valve this weekend and hoping to buy some time until i can afford to have a delete kit put on. My wish list down the road is ERG delete, gauges or monitor and SCT with mild tunes (i am more interested in keeping my mpg up than blowing the smoke everywhere, but don't get me wrong it is fun sometimes) I am thinking of a 4" MBRP but don't know if i should go turbo back or cat back and should i get rid of my cat, muffler or both. I don't pull heavy, just wood and about a 8,000 lb camper. I don't want it to get to loud. Will the 4" be good or should i do 5". Any suggestions would be great.
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Old 11-07-2011, 09:19 AM
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5" would be a bit of a deeper groan than the 4".. What year do you have?? Mine is an 04,, and I have the 4" MBRP. I went with out the cat, and muffler. It is "Turbo" loud. But that is the year I have,, many wont do this as bad. But,, I kinda like it. It does keep my EGT's down. Its a diesel,, they are known for noise. People will get over it! My neighbors did! LOL.. I like the 4",, people say that there is NO gain between the 4", and 5" for performance. Just loudness, or a deeper groan to the exhaust. So, that is my 2 cents. Good luck!
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Old 11-07-2011, 09:22 AM
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this is what i recommend: http://stealth-automotive.com/index....roduct_id=1724
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Old 11-07-2011, 09:26 AM
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Quote:
Originally Posted by jjeffrey69 View Post
5" would be a bit of a deeper groan than the 4".. What year do you have?? Mine is an 04,, and I have the 4" MBRP. I went with out the cat, and muffler. It is "Turbo" loud. But that is the year I have,, many wont do this as bad. But,, I kinda like it. It does keep my EGT's down. Its a diesel,, they are known for noise. People will get over it! My neighbors did! LOL.. I like the 4",, people say that there is NO gain between the 4", and 5" for performance. Just loudness, or a deeper groan to the exhaust. So, that is my 2 cents. Good luck!

I have an 05. I love the sound of a diesel, but don't want to overpower that with a roar sound. I am wanting to do the exhaust as an easy wayto keep by EGTs down until i can afford the better fixes. Does a diesel need any backpressure? That is my only concern with removing both the cat and muffler. Did you have much problem removing your old downpipe and installing hte new one. I will be doing this in my driveway and don't have access to a lift.
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Old 11-07-2011, 09:32 AM
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If you are concerned about the downpipe get a 3.5"dp to a 4" system. Personally I like the full 4" and on an 05-07 the fit pretty easily. Mine has been straight piped for years and I love it. Not too loud idling or cruising but when you really put your foot in it it roars. No you don't need back pressure with a turbo. open it up and it spools faster.
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Old 11-07-2011, 09:38 AM
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Originally Posted by PGreenSVT View Post
If you are concerned about the downpipe get a 3.5"dp to a 4" system. Personally I like the full 4" and on an 05-07 the fit pretty easily. Mine has been straight piped for years and I love it. Not too loud idling or cruising but when you really put your foot in it it roars. No you don't need back pressure with a turbo. open it up and it spools faster.
Thanks. I have read that a lot of people cut the old pipe out, so not to worried about that. But i figure if the old one is that hard to get out that you cut it, the new one would be just as hard to put in. With the 3.5" dp wouldn't that restrict the exhaust right out of the turbo and take away any benifits of the larger exhaust?
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Old 11-07-2011, 09:41 AM
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YES! The down pipe is a bear!! Might want to have a stick of dynomite on hand! LOL.. But,, the 04' may be a little bit differ.. The firewall will be your enemy! I had a buddy of mine put the exhaust on,, and he cussed the 6.0 pretty bad! But,, we got it together! I think you will love the 4"! I have had ZERO problems from deleting the cat, and muffler! EGT's came down 100* or so! Love pulling with it now also,, seems like I power through the hills a TON easier! That was even before I got the STC tuner.
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Old 11-07-2011, 10:34 AM
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I love my 4" MBRP strait pipe
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