Join Date: Nov 2002
Location: Melbourne's West
The ELs get air from under the bonnet lip. All of the air that enters the snorkel is cold. When you shut the bonnet there is a small gap all around that allows air to get in.
I finally shelled out the $29 for the AU XR8 intake snorkel, and found the following experiences. The part number that I got off one of the postings ended up being the 220kw XR8 intake snorkel, which is slightly different tot he original AU XR8 one.
My baby is an EL Fairmont Ghia, so I dont know how relevant this would be to you.
I found that I would not fit correctly unless I cut back some of the fan shroud. It would fit with a bit of forcing, but I dont think that is the right way to go. This is also something that I have not read on any other positing here, so I also wonder if I got the right one, but in the end it does fit.
Make sure you cut the leading lip of the snorkel, so the screw holes are about centre on the top of the radiator bracket. If you look under the bonnet, this is a rubber seal that runs near the front edge of the bonnet, and winds around a cut out where the intake sits when the bonnet is closed. If you cut the snorkel as suggested, when the bonnet is closed, the seal will sit about 2mm from the leading edge of the top of the snorkel. This effectively stops any hot air from the engine entering the intake, only allowing outside air to get under the bonnet lip. If you dont cut the snorkel edge, then the top edge of the intake will be exposed to the under bonnet air.
The results were worth the $29. I found there is a small increase in power across the whole rev range. A little down low, but most noticably, the power above 3000rpm is better and smoother all the way to the red line. You also find that when you stick your hand in front of the new snorkel and rev, it will almost suck yr hand down the intake. Something the original one could not do. I am still running with the 20,000km old factory air filter, and plan to change it soon. I am trying to do it a step at a time to see where the big differences are made. Next is a new filter, then an EF airbox lid. The jury is still out on what effect is has had to fuel consumption, but I am guessing it will use a little more fuel.
Im sure the way Ford does it is not as good getting the air from directly behind a grill, etc, but it does do the job, and with the new snorkel does a better job.
I know this is not really an answer to the question you asked, just thought I would share my last weekends experiences with everyone.