Cat delete
Cargo Master
Joined: Feb 2008
Posts: 2,862
Likes: 44
From: Tooele, UT
welcome to FTE! 
to go along with UGA33 you won't get any performance gains but your turbo whistle will will go up and sound great. don't expect it to be to to loud if you have an 05 or higher. for some reason the 03's and 04's the turbo's whistle louder. it's really easy to do and if you don't like it you can put the kitty back in and you aren't out too much.
to go along with UGA33 you won't get any performance gains but your turbo whistle will will go up and sound great. don't expect it to be to to loud if you have an 05 or higher. for some reason the 03's and 04's the turbo's whistle louder. it's really easy to do and if you don't like it you can put the kitty back in and you aren't out too much.
Cargo Master
Joined: Feb 2008
Posts: 2,862
Likes: 44
From: Tooele, UT
thanks. i haven't seen a post explaining why that was. so i guess that means more veins for the possibility of sticking for me huh? haha
Senior User
Joined: Sep 2007
Posts: 193
Likes: 0
From: Rexburg ID
Ford decided the whistle of the '03 10 vane was obnoxious, so that's why they changed it. Some early '04 models got the 10 vane too, but that meant they had an '03 model year engine. The feds might frown on the cat being out if the wrong person found out, and if you have a warranty, the dealer might throw a fit. then again, they might not. I've seen a few reports where there's like a 3-7 hp gain, but you'd never feel that kind of difference. It's like the other guys said, cooler temps, way cooler sound, and maybe a touch better mpg. If you go with a bigger exhaust I'd recommend not going bigger than 3 1/2" downpipe & 4"-5" after. you need just a little back pressure after the turbo to let the VGT operate to it's fullest potential.
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Post Fiend
Joined: Oct 2005
Posts: 10,626
Likes: 7
From: Plano TX and Brentwood TN
It's more along the lines of 20 hp and the biggest thing you'll notice is a slight increase in lag if you just romp on the peddle from a dead stop instead of rolling into it. The scream at low speads with an 03 turbo is a wonderful sound, but alas I needed to get rid of the vgt design.
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From: Unfortunately Jeresy
fs I agree with all these guys and their feedback, i don't wanna burst your bubble and this may not happen to you however, I just put a turbo back silverline kit on my 06 6 liter and shortly after i get all kinds off whitish blue smoke when i accelerate from any kind of stop. I'm sure it's coincidental but it's been to the dealership and ford themselves said putting an aftermarket exhaust on may create smoke due to incomplete combustion. Which is a load of crap in my book so now i'm stuck with a horribly smoky truck and no one to turn to for help all because i changed my exhaust. Good luck whatever you do just giving you feedback.
Lead Driver
Joined: Sep 2006
Posts: 5,663
Likes: 162
From: Cartersville, Ga
fs I agree with all these guys and their feedback, i don't wanna burst your bubble and this may not happen to you however, I just put a turbo back silverline kit on my 06 6 liter and shortly after i get all kinds off whitish blue smoke when i accelerate from any kind of stop. I'm sure it's coincidental but it's been to the dealership and ford themselves said putting an aftermarket exhaust on may create smoke due to incomplete combustion. Which is a load of crap in my book so now i'm stuck with a horribly smoky truck and no one to turn to for help all because i changed my exhaust. Good luck whatever you do just giving you feedback.
Cargo Master
Joined: Feb 2008
Posts: 2,862
Likes: 44
From: Tooele, UT
MBRP Exhaust Systems Ford 6.0L Powerstroke Diesel
