roush 427R

I added a APEXI cone filter to some 3.5" bent aluminum for a custom air intake on my '08 427R since Roush wants $400+ for his kit. My question is will this make the car run lean or will it self adjust for the extra air? I didn't change any of the sensors locations, if that matters. Any help is appreciated.

Thanks

pacettr

You are taking your chances.


Please take this with a grain of salt, but you drive a $45k Mustang. A PROPER $400 CAI made by the manufacturer of your car for your car seems affordable.

LilRoush

Didn't your car come with the Roush CAI as part of the package? It should have.
Roush tune for the Roushcharger is pretty specifc for their package, and your are playing with fire.

mikebna

Welcome to the site, next time maybe you can ask before doing something like this......

Sounds like the RICE MOD to me-homemade cai tube and add 1 cone filter to dangle off the end and show it off on the cruise nights.

Seriously, WHY would you do that to a 427R? Not to mention not even considering a better tune?

I believe that the general consensus would be that yes you will mess up a perfectly good Rousch by doing what you did without getting any of the right info first just to save a few bucks.

good luck,

mike

pacettr

It doesn't come with a CAI.

PolkThug

My experience with the 'Spanish Oak' (S197 computer) is that if it senses more air, it will dump to much fuel and you will run rich and have less power. On the 05+ Mustangs, for best results, you need to retune with any change to airflows both coming and going.

LilRoush

I just went back and looked. All S197 RoushCharged cars have them. It's part of the Roush blower package. Even has the ROUSH name on the tube.

pacettr

No they don't. That's not a CAI.

http://store.roushperformance.com/detail.aspx?ID=1143

LilRoush

Ah, I have learned something. I would have called that a fender mount set up/adaptor for a cold air intake.

And right in the ad, it says it has a NEW TUNE (so one would assume you would have to retune after such a change).

roush 427R

My 427R defindently didn't come with a CAI. I put this "homemade" kit on versus the Roush kit wasn't so much to save money, but when I researched cone filter test. The APEXI filter was by far the best one available for both performance and dirt containment. Thanks for all your help and responses I live and learn.