Hi there,

What is compatible for a 2004-2008 F150 5.4 CAI with a Roush blower?

The blower kit came with the Roush air box, and I really, I mean it, I really want to have a louder whine sound, I already got the blower silencer holes filled, but this is not enough and now I need to find a way to replace this ugly air box with a CAI, I'm after sound, not necessarily performance.

Any ideas as to how to add a CAI with this setup? should it be custom made?

thanks..

 

Do you have a loud exhaust? Am not sure if a CAI will add to the overall effect.

The only other option would be a 'Snake-Bite' conversion. Believe me, mine is extra loud even without boost. Stock exhaust. Stock Roush Airbox that's insulated internally to resist heat soak.

PM Jeffbang, he done a tasty CAI but I doubt it will add enough noise.

 

I have confirmed with Roush and JDM, a CAI will definitely make the whine louder and that is what I am after.

Yes loud exhaust, ie. LT headers and true duals

 

Widj as we spoke about before CAI will allow more sound to escape. You've got options here:
Cut 3" holes in the front of the box below the filter facing the headlight and run some ducts down. This will allow a lot of sound out and will give the blower access to more cooler air.

2nd buy a Volant set up and adapt it to yours.
3rd let me build you

4th loudest option of all since you don't care about performance loss remove the box, buy a K&N cone style filter and clamp it to the existing plastic pipe. You will lose power sucking in that hot air but it will allow every bit of noise to come out.

See my thread on this here https://www.f150online.com/forums/sh...d.php?t=443358

 

The issue is that because off the added blower, The CAI path is now different, I called k&n they said their CAI won't fit

I'm pretty sure I'll need a custom made CAI, Stuart are my options?

K&n and volant won't fit, path is different

 

Thats why I said "adapt". You can use any of the boxes that house the filter. You will just have to adapt it to the existing intake tract or make your own intake tract.

 

The S&B's do filter a little better since they have more material packed in them. Either will do. The test I saw on the two revealed the S&B at 99.69% and the K&N at 97.46. I like both. Whipple uses S&B as well. Regardless mine is wearing an OuterWears pre-filter. Saves a lot of time for cleaning. Filter never gets dirty. When I change my oil I simply vacuum the Outerwears pre-filter as well as the CAI and go.

 

Well if you insist. If you cut the MAF tube off the actual air box top cover, the Whipple Air filter cone will fit (Not sure of size, never measured ID) It's tight as there's not much meat between the cut and MAF boss. Your gonna need to make a support bracket.

Try to keep the 108mm MAF as your tuned for it.

Am not trying to push parts but I have a Roush Top cover I could cut and whipple filter i could pop in a box.

The loud exhaust is drowning the whine out eh.

OR!!! you could get a rarther tasty CAI off a Jason. Just beautiful units.

 

Yeah I tested the inlet and throttle body restriction about a year ago using this method after reading about KenneBell testing this way. I posted the results thats when I started trying to fit the Accu-Fab throttle body 84.5mm. Anyway that part needed custom tuning where as the 90mm Ford piece did not. So that's what I have. Did away with the 3.5" tubing and made my own 4" setup.

 

Twinscrewd, how much would you charge to build a 4" set up for a Roush?? I already have a 90mm throttle body, so everything else should fit up just perfect.

 

PM sent but I will post it here as well for anyone interested or who might have some pics to share. I have built 4 of these so far. I have the original and built 3 more for other members.

Good question Corey. I don't have a Roush truck I could measure off of. I would need some really good pics. An over view of the engine bay and then some closer up. If you want you could text me pics or email. PM me for my number. I would love to build one for the Roush. The air filter housing I built for the Whipple should work just fine. However I need to see how the Roush setup incorporates the MAF housing and where it's mounted in the course of the intake. Also how the current intake tract connects to the current filter housing. If it uses the MAF housing to connect to the filter housing similar to the way Whipple does thats perfect. Once I have that info it shouldn't be hard.