i went to the exhaust shop today and got quoted 280 for an x pipe and true dual straights mandral bent but he siad it wouldnt be a good idea because it would lose a lot of low end torque...he said to just port a single 3" pipe off of the stock y pipe instead and it would be around 80$ and that would keep my low end while still givin me a good loud sound, he also said with the 5.4 he has put about 8 different setups and dynoed them and the 3" did the best so my main question is how much of a difference in sound will there be in running the 3" straight pipe or true dual straight pipes

 

He is correct about better low end, but true duals rumble a hell of alot more.

 

if i did go with duals do you think its neccesary to go with the x pipe cause thats what bumped the cost up so much

 

Yes definitely, I have 2.5" true duals X piped and I still feel the lost lag faintly, but I dont mind it.

 

X-pipe necessary to keep back pressure even off all cylinders.

 

u can get more rumble from true duals

 

ok so now my question is what would you do...go with true duals 280 or just the single 3" straight pipe for 80

 

An X-pipe is necessary to keep exhaust gas velocities as high as possible through better exhaust scavenging and equalizing pressure from both exhaust banks.

X-pipes actually reduce backpressure and turbulence. On most engines (Ford 4.6L, 5.4L, ect.), you want as high exhaust gas velocitiy as possible, with as little backpressure as possible.

 

Didnt I say something like that?

 

if u want loud the true dual straights are gonna wake the dead. it'l be insane. 6 months from now that extra $200 you spent wont even matter

 

If cost is no object, and you dont tow heavy trailers, go for the true duals.

 

Well money is an object but I might just save a little not sure though well see

 

Ok. Well I just remembered that you have a hell of a lift and some real heavy wheels, it take low end to get them turning also. If you haven't re-geared yet I wouldn't true dual it.

 

yea i think im just goin to go with the 3" pipe and if i dont like it ill change it later