Is it better to have a short intake that sucks air from behind the rad, short 180* intake that sucks from the side of the intake plenum, or long-ass intake that sucks from in front of the radiator? What about water down there? I know nothing about NA tuning stuff.

Substitute the term "felch" for "suck" for all you lady-boys out there.

Unless you plan to cross rivers I don't see any problem with using current coldside piping with filter in front of rad. How often do you race in the rain anyway?

how much low-end torque do you want?

All of it, I guess I'm going long to get all the low-end Santorum felched-up. Then again, I'm running a 6-speed with a 4.10 so the car may never see anything below 4k.

I should probably get a crank pully from 949 or TSE considering the abuse this poor engine is about to recieve, with it's knife-edged crank.

I'm doing this later:
https://www.miataturbo.net/megasquir...32/#post818252

N/A serious business track car + Absurdflowed street car = Charlie Sheening.

For a filter you can order a k&n from an oreillys or somewhere and usually get it the next day. K&N may not be what your wanting to run but they have crazy amounts of sizes and shapes and you could have it by Thursday.

Awesome, thanks.

When will the ITB's go on?

Ban!

Simple is good. I think you've made a sound decision. You ... you used logic! Profit.

Take a look at an S2000 stock filter

https://encrypted-tbn1.google.com/im...iuoZ559paxfkmV

You should be able to pick one of those up at any kragen/autozone/o'really if you dont want to wait for someone to order you a K&N. I believe Amsoil makes one of their synthetics that is direct fit for the S2k as well.

What about water/rain and mounting the intake in front of the radiator?

Don't drive race car in rain? No sense sacrificing performance 95% of the time to plan for the 5%. If its going to rain on track day change to simple 180 degree cold side filter. Loss of low end torque will be like traction control :giggle:

Super simple solution for a super simple problem. Very nice.

Occasion=straights?

Regarding water in the intake, I've heard extremely mixed views.
A number of s2ki.com forum members seem to have 'heard of a guy' who hydrolocked their engine. One member is sure that his CAI-equipped engine bogged and then blew after he splashed through a big puddle on the street. However, I've never encountered such horror stories anywhere else on the web, which makes me wonder if this hydrolock phenomenon is just an idiosyncrasy of this particular forum.
Another example: my friend once told me he was penalised during an intake design module of his motorsports engineering course for positioning the trial vehicle's air filter in an exposed position. So, edumacated people do not recommend it.

Yet, there must be thousands of cars out there running cold air intakes, who would seem to be doing just fine. Which is a bit of a limp argument, but hey ho.


I'd be really interested in any other anecdotes/evidence/facts people can bring to this, as my air filter is currently in an incredibly exposed position and I do not want to blow the engine of a car I've been waiting a year for.

I do nothing "straight".

In for more FUJI ITB pictures.