I was thinking of buying a fujita short ram intake for my 2005 Acura Rsx, but im not sure which one to choose, any help or answers?Thanks,
Both are fairly bogus concepts in a modern car. Your Acura, like all modern cars, already has a cold air intake. Any difference in restriction only appears for a few seconds at full throttle and very high rpm - at less than full throttle the throttle restriction is more than the air filter and at all but the most extreme rpm the stock filter restriction is negligible. The short ram is a throwback to the under-hood intakes that spawned cold air intakes in the first place. At high speeds it can bring cold air in decently, but that's about it. Perhaps the ram effect will help? Well, ram air pressure is ambient air pressure (just under 15 psi at sea level) times the square of the speed relative to the speed of sound at that temperature. 60 mph, for example, is 60/767 or .078 mach. The ram air pressure is .09 psi (0.078^2 x 15). At 30 mph the boost drops off to 1/4 that, .022 psi. That .09 psi at 60 mph is equivalent to reducing your altitude 150 ft.
Short ram gives better low end response, but doesn't give as big as a gain as cold air intake. Cold air intakes give the most gain in the high end, but you loose some low end response. I would break it down to are you going to rev the engine a lot? or is it mostly for city driving, but want that little ump at the low end. I would go with short ram so everyday driving. PS: cold air also has a risk of hydro lock if you live in a very rainy area, but it's very rare. Oh ya and you would have to but out some pieces of the driver side front wheel fender
