Got true duels today: 14" oval magnaflows with a magnaflow x-pipe and 4"x18" tips 45ed off the back. I cant be happier. I cant keep my foot off the skinny peddle. Starts up really nice. Then has a quite deep tone at idle. And on take off sounds like a bat out of hell.

Thanks everyone on here for all the help.

Just got one more question. Would a CAI make a difference. I have an 03 SCREW with 63,000 miles. I cant get a gryphon for my year. That was the programmer I liked most. Is a CAI still worth it?

 

I don't know the CAI answer, but what size piping did you go with? I want to run almost the same setup, but with 2 cats instead of 4. Any low end torque loss?

 

Congrats, enjoy. a CAI would help the note be a little stronger, and performance would increase a little, even better with an intake.

 

I'm down! x2

 

ya get that intake..itll be a little throatier..any vids??

 

as long as he ran 2.25"[especially if he has a 4.6],and kept x as close to original y location as possible

 

how much would i lose if i went with 2.5"?

 

is it a 4.6 or 5.4,i went with 2.25" on my 5.4 and gained SIGNIFICANTLY over my 3"siso oem setup on my 04 superduty in the lowend area...

 

its a 5.4

 

if you use your truck -not drag racing it-by this i mean driving it normal-using the tq that the triton provides, 2.25" is the way to go- now the 2.5 will deliver a tad more in top in hp in the upper rpms, but it loses in the tq dept. under 3500 to the 2.25"

 

alright....thanks...well since i already have a 2.5" muffler i am re using, i probably will go with 2.5 true duals. i do not tow alot so i think i will be fine. thanks for the help openclass.

 

i assume you are using a 2.5" dido muffler?you could still use 2.25 in /out,they would just expand the 2.25" by swedging it to mate the 2.5" muffler,consider this -even though you do not tow-you still do not want to lose any bottom end,these 6000 lb trucks need all the bottom end they can get, imho-anytime i can help bro-phil

 

no...i have a si/so 4x9x14. i would get another one and an x pipe to run true duals along with either 2 high flows or just deleting my rear cats.

 

You can still use 2.25" pipes with the 2.5" mufflers.

 

Did you use mandrel bent pipes or those god awful crush bent pipes?