Sapphonica

I am having a Greddy kit put on soon, but am not happy with the intake sucking hot air...kinda diminishes the effectiveness of the intercooler, methinks.

Depending on what is easier/cheaper/most efficacious, I plan to have my installer fabricate a cold air intake, probably including a 'ram air'. If I can adapt my REVi, so much the better.

Or maybe I'll have to do something like Speed Force Racing, where they put a filter on a stick in front. The problem with that is that their pipe is not very large diameter (probably a lot of flow loss), and it looks like you'll have to take off the bumper to clean the air filter.

Now, I need to figure out a way to get cold air to the intercooler without chopping up my hood. Well, OK, maybe I'll chop up my hood if that's what it takes!

guitarjunkie28

lol... i had to look up efficacious in the dictionary. i've never heard that word before in my entire life!

Richard Paul

iTrader: (5)

Why don't you try puting it on like it was engineered by the builder? What I mean is why do you think you're smarter then they are? Maybe it is built like it is for a reason.
Also what makes you think that the other kit's pipe is too small? Did you calculate the air speed and drag?

rotarygod

If you compare the inlet pipe size vs the size of the inlet on the turbo itself, I think you'll find the turbo inlet is MUCH smaller which would mean anything larger than it in front of it can't possibly be a restriction.

You will not get "ram air" with a turbo. "Cold air" yes.

Hybrid-RX8

Just letting you guys know..K&N is coming up with an intake designed for the GREDDY turbo..I'm supposed to be recieving a prototype in a few weeks

Sapphonica

Here's the pic of Speed Force Racing's cold air intake:

http://www.speedforceracing.com/imag...it/rx8_1_1.jpg

True statement: it will not be 'ram air' if I am already pumping air into the intake with a compressor.

It's indeterminate how much engineering went into the Greddy kit. If the correct answer is 'a lot', then there's little to be gained by mucking with it.

However, in theory at least, getting more, colder/denser air to start with means it won't get as hot after it's compressed. The intercooler can only remove x amount of thermal energy per unit mass/volume/time, so maybe if it starts with a cooler input, the output will be cooler too. Maybe the head loss from the longer pipe will obviate the advantage of cooler air...I dunno.

I don't have the equations or empirical data from myriad real world applications, so this is just a SWAG.

...guess I'll find out.