On the 3.7 Roadsters the only intake for air is via a hole cut onto the base of the Mustang airbox / filter housing here..
It's not very large in area and draws intake air from close to the back of the engine and the footwell bulkhead, and is only about 6 inches from the hot exhaust manifold
The filter sits flat in the top of the airbox & there's plenty of space below...
So I've cut some additional intake holes below the filter line to allow more air routes in, and hopefully some will be cooler air pushed in by the forward facing bonnet louvres, and I'm lining the 'box' with reflective foil tape
Next task is an air scoop to the back of the bonnet side louvres or a Naca duct
Inspired by Jon's much earlier posts relating to getting more cooler air into the 3.7 Roadster's air box, I've also cut a 4" hole in the box but then used a ducting elbow that came from Screwfix to help draw cool air from the side vents in the bonnet. A quick spray of matt black and I think it looks quite tidy.
I've left the original hole in the base of the box open, but I'm hoping that this - very cheap! - addition may improve things.
Only a proper dyno test will confirm one way or the other whether there's any difference in performance, as I must say I can't notice any, but I just feel that anything's got to be better than the standard arrangement.
Sid
Ex 2014 3.7 Roadster in Ferrari Le Mans Blue Ex Indigo Blue '99 +4 Ex MogMMX Innovations winner
