How to build a Ram Air induction system for a TPI fuel system
Here are the supplies and tools I used:
A few feet of flexible 8" airconditioning duct
Hacksaw
Dremel tool w/ cut off disc
Diagonal cutters
7 mm socket wrench (I think)
Chalk
Rough-grit sandpaper or file
Procedure:
Remove stock airboxes and with a hacksaw, cut off the bottom half. I cut just above the stock intake holes. Make sure to leave enough material on the the airboxes so the A/C hose will stay on.
Take the A/C hose out of its insulation (not necessary).
Determine where on the air dam the A/C hoses will pass through. The air dam is the plastic piece that originally separated the front of the engine bay and airboxes from the incoming air from the fog lights. You will see it when the air boxes are removed. Just lay the airboxes in their proper location and notice where the ducts will have to go through the plastic.
Chalk the outline of where the air dam will be cut out so the ducts can pass through.
With Dremel tool and cut off disc, cut along the chalked outline on the air dam and pop out the pieces just cut out
Take sandpaper or file and smooth the freshly cut, sharp edges. You don’t want the ducts to get cut.
Install airboxes
Take A/C duct and stretch it from the back of the fog light tubes to the bottom of the airbox. Cut off exess. You do not want exess, as that will decrease the ram air effect. The 8" duct stretched right over the airbox. I bought some clamps to hole it on, but they were unnecessary since it stayed on w/o a problem. The duct sometimes blows off the bottom fog light tubes, so it might be a good idea to clamp that down w/ a large zip tie, or metal hose clamp.
Go for a "spirited" drive and notice that it pulls harder at extreme speeds
Keep that huge smile 🙂
I’m considering making a new setup w/ a sheet metal duct, or PVC pipes. If you have any more ideas, let me know.
