Hi Y'all! brand new to the forum so not absolutely sure if this is in the right spot. looking at picking up a 1990 f250 with a 460 here in the next few days (hopefully sunday if all goes well). being a gear head like most of y'all i like to find out what i can mess with and what i can tweak even if i don't have the vehicle parked out front yet. now I've been looking at some exhaust options for it and would really like to do a dual exhaust. because I'm stuck with california emissions for another year or so i can only modify from cat back so true duals are out of the question.

Anyways heres what I'm getting at, does anyone know of a cat back dual exhaust system that will fit a long bed F250 with the dual tanks?

 

Just go to your local exhuast shop and talk to them. They will more than likely sell you the pipe cut to the right length. Or do it for you, they will probably do a better job than the average garage guy IMO. I had a shop do my 351W awhile back
(long bed dual tanks). The guy replaced the pipe from the manifold with 4" pipe to the flowmaster, and then dual 3" out the back with stainless tips. It sounded nice and deep. Another option (at least here in Washington) is to add a cat and run "true" duals.

 

I had good luck with the dual exhaust kits from JEGS. They're cheap and seem to last quite a while. I did a cat back on my old '97 F250 HD 2WD that was a long bed.

 

I see no reason to spend the bucks for two of everything after the converter. All you are going to accomplish is lightening your wallet with almost zero performance gain. The bottleneck on the bigger trucks is the airhorns on the intake (7.5L) and the single huge converter. The airhorn is easy enough to mod, the single large converter is another story for an emission **** state like Cali.

Save your money for exhaust mods until you move out of that mindless control state then invest in a Banks exhaust w/headers. Then see if you can talk Boport into porting some 7.5L heads for you: https://www.ford-trucks.com/forums/9...ts-are-in.html

 

Agreed. Dual exhaust is for LOOKS ONLY and to me it looks like you are trying too hard

 

just for clarification it wouldn't necessarily be true duals, probably just a single to dual muffler. i don't really plan on seeing much, if any, performance gain from any cat-back system. once its registered in wyoming where there pretty much is no emissions laws i plan to do more to the exhaust, specifically headers and no more cat.

I thought duals, other than performance, were more about sound quality? kind of a stereo effect?

 

Duals sound no different to me. Other than $$ leaving my pocket.

On my 460 truck I am running Banks Torque Tubes(headers), their stainless Y-pipe, a high flow 3" cat, 20 series Flow master and 3" Single exhaust the whole way.

It sounds REALLY good, I get complements all the time. My only gripe is it get that little back fire when I down shift at higher RPMs

 

I concur on the banks kit. I put that on my F350 cclb with stock cat, sounded great and everyone loved the sound.

 

i have been looking at the banks kit but unfortunately commiefornia won't hardly let you touch anything before the cat. at least not without a Carb E.O. number. flowmasters always seem to have exhaust cackle to them. thanks for the advice y'all!

 

The banks setup HAS a CARB E.O. No.

 

I cut the air horns off mine and cut the cat off. Have factory manifolds but dual in dual out muffler. Sounds awesome and man is it a runnin' son of a gun.

 

I had to redo my system it was bad to the point it would stall going up a hill. So we cut the cat out at where the 2 pipes go to the cat, put a y adapter in there to go into a flowmaster 40 then out to a 45° angle out to the front of the wheel. I live in CA but don't have to somg because i live out in the country.

 

My truck and I live in California and she`s got the Banks Power Pack. Fully Cali legal with Cat of course. Worth the money. Top quality and will last the life of your truck.

 

What about running true duals with hi flow cats? You still have a cat to pass inspection, you get the duals you want, and you gain the sound your looking for.

 

Who makes a good hi-flow cat? and what does it cost?