2015-17 Ford Mustang Steeda Cold Air Intake GT - S550 - 5.0 by Steeda

First let me say that I had contacted Steeda a couple of times regarding this product and its installation and they were always courteous and tried to be helpful. Having said that, you would think that an item such as this would be easy enough to install so that you would not have to contact the manufacturer. Well, here are the issues I have with this CAI:
Poor fitting silicone rubber coupling at the air filter/ MAF section
Having to cut off the EOM air resonator
Loose fitting grommets at PVC connections
Ill-fitting air box gasket
Having to relocate MAF wiring from inner fender attachments in order to reach new location
Having to trim excess flashing from composite elbow for better fit of coupling sleeves
On the positive side it appears that all the component pieces are of good quality materials and should last. The machined aluminum restrictor sleeve seems like overkill and could have been made of a cheaper material since many users won't even install it and the reduced manufacturing costs could be put toward supplying a cold air feed duct so you wouldn't have to butcher the factory one.
For this price point, the CAI kit should include everything.

This CAI looks awesome but that's about where the good part ends. Installation took about 30 minutes. This was the most expensive CAI I considered but it has the cheapest construction. All fitments are "rigged" rather then cleanly engineered. Assembly feels like someone put this together in their garage with spare parts. The grommets are loose and may push through and get sucked in the throttle body. The weatherstripping is re-purposed door seal and does not conform to the sharp angles of the air box. It falls off if you breathe on it. It uses part of the OEM intake and is not molded to fit. They "corrected" this by installing a few screw "nubbins" to grab hold but it snaps off easily. It took several attempts to get this thing fitted without something coming loose. I doubt the horsepower claims. Both the butt dyno and the cars acceleration timers show no difference. But it looks cool, so there's that.

Great looking product. Love the sound. Easy installation. However, poor rating due to water intrusion through the hood heat extractor. After a rain or following a normal car wash, the conical filter is saturated with water and the blue oil is being rapidly washed away after only 2 weeks of use. Have now removed the Steeda CAI and re-installed the stock intake (w/K&N flat filter) and in discussion with LMR/Steeda to either resolve issue and/or replace with alternative CAI system not plagued with water intrusion issue.

This is a great CAI to use with or without a tune. The sound is amazing coming out under the hood. Growling from the coyote will be noticed. You can feel HP gain and see the the MPG improvement . The 4 star is solely for the installation of it. Cutting and getting the snout in place can be tricky and take extra time to get right. Other than that I highly recommend it.

This CAI sounds great! You can actually hear and feel the difference. It roars when you hit it and you can tell the engine loves breathing better. You can also see the fuel mileage difference as well maybe by 5 mpg. The only bad thing I would say is the installation of it. Cutting the resonator and keeping the air duct in place was a little time consuming. Delivery is next day if you live in Texas.