Well I think I have it down to three possibilities True dual magnafolw 11" bodies high flow cats x-pipe. Single maganflow 11" body high flow cats or The Roush Off Road kit with high flow cats. Any thoughts on theses setups? What would be better performance wise? Any help is greatly appreciated.

 

Out the 3 to select from... I vote Roush off road with maggi high flows!
Y?













It sounds much better than magnaflow mufflers!!

 

yea I never liked maganflow that much I just wanted a straight threw muffler I had flowmaster on my last truck and loved it I just want something different. btw Av frog your truck sounds awesome the best Ive ever heard.

 

Those are 3 pretty different setups, but ROR with HFCs is my choice. Are you replacing all 4 with 2 HFs?

 

Yes if I go that way I want to replace the factory Y because I saw a picture of one on here and it look very restricted.

 

not a bad idea.

 

I'd say run a 3" intermediate pipe off a Magnaflow Y pipe into a Magnaflow 14" body, or Dynomax bullet, with stock cats. Roush Off road with hi-flows sounds a bit wrappy from the two videos the one guy made of it, and not a fan of straight out back tips.

 

x2! roush off road!!!!!

 

Darren were are those vids of that been searching you tube high and low. If I get the roush off road kit I'm getting different tips 45'ed.

 

Thanks bobby...
I still vote Roush here especially with the HF's! It will defiantly be a unique sounding exhaust!

 

The best performing setup would depend on what you do with your truck. True duals are good for all round performance but are best when you don't tow anything. A SISO would be the absolute best if you tow **** around often.

The best true dual setup would be:
Hi-flow cats
2.25 mandrel bent pipes
2 straight through mufflers (Magnflows, Bullets, Borlas, etc.)
X/H-pipe

I wouldn't bother with a SIDO since you are paying top dollar for a kit that doesn't perform as good as the others.

 

great info punisher, what do you think about 2.5 to the mufflers then 2.25 out?

 

It's best to keep it 2.25 all the way through. I would have 2.5 at the cats and then scale it down right after them. Any shop can do that, as long as you tell them.

 

Its Trent's truck.

http://www.youtube.com/watch?v=_ADZavDTNy8

http://www.youtube.com/watch?v=mqZVzfAFD7I

I was also going to do that, but once I did the math and found out that it would cost me more money in the long run and my true duals would be cheaper and perform better on high end I went with them. And I would but 4x18" tips on 45'd not the dinky 4x12 Roush tips.

 

This