If you go aftermarket ECU, you no longer need your air flow meter, however getting rid of it means that you have to go with a RevIII air cleaner. It's mostly the same, but there are some slight differences...

I chose the Blitz cleaner because:
A. I'm a JDM kind of guy
B. It looks like a jet engine and I just can't seem to get pas that
C. I have a RevII version on my car and I've been reasonably happy with it.
D. Because the filter is all covered over, it means that your car does not pop and fart after some rain gets in the engine bay


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The filter is adjustable in that you can have 'hi flow' mode or 'lo flow mode'. Not sure why you would want lo flow but there you go:


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Pick from the outside of the box

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All of the parts in the box are very nice, the elbow pipe is lightweight aluminium rather than steel :ohmy:

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Box contents:

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Close up of the jet look: note bag not for in car use :)

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Because my engine is RevII and this is a RevIII kit, some of the engine piping is different. Basically there are two extra inlets after the filter on this kit that I won't be using.. So while I get myself sorted with a proper turbo elbow, I need to block these off. One is a feeder pipe that comes out of the aluminium tube and the other is a hole that is right on the air cleaner enclose itself:

I plan on running to this later so just some re-inforced race tape for now (this is not pressurised)

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This hole I am blocking up with a mix of grommet and washers/bolt. I don't plan on ever using this hole so it's going to hide around the back were no-one can see it

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Other side:

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It's getting the benefit of my all time favourite tool :smile:

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And the finished job looks reasonably neat (and seals perfectly)

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Here's the old air cleaner system in place

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and out of the car:

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The problem I have with this is:
A. The AFM is restrictive and won't allow me to make full power
B. It is poked in towards the strut tower, meaning that my DM catch can won't fit.

Happily, the RevIII kit fixes both of these issues.

I'm not sure why, but the Blitz kit has a two piece fitting that encompasses the primary air feed and the filter housing. These are held together with 4 bolts.


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So I put the assembly together to test fit it in place before doing anything permanent.


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Outer filter cover in place

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Everything lined up great so then I pulled it back out and began some final prep for the finished installation

I don't like metal on metal and that 4 bolt assembly rubs me up the wrong way, so I put in some black silicon RTV to ensure there's a good air seal in place

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The filter that is supplied is a washable/oilable type. Out of the box it is plain and untreated, so I had to hit it with some Blitz filter oil. It would be nice if the instructions were legible, but in this case it's in Japanese. I figured that I could pretty much just go by the picture:

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Well the next time I do it, I will use a lot less oil as I put too much on, it would even be easier to mix a bit with fuel and spray it on to the filter.

Anyway, after making an oily mess I got around to fitting the final piece:
Lo flow

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Hi flow

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Finished assembly in the car. Appart from those old rusty hose clamps I need to replace, I think it looks ok!

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So I noticed after about 5 minutes that oil was leaking out of the assembly down the inside of the car. This would indicate that I put too much on.. The car started and runs fine, but it's a little smokey when you rev it, which I guess is the oil burning through the engine. I left some newspaper under the car and hopefully it will drain out by the morning or I'll be smoky joe from now on in.

Looks good mate. I'll be doing this myself in the future. Need to get myself a Power FC first though! Great write up.

Well if you need any tips, let me know

Will do bud.

Pulled some info out of my journal and posted it up here: Power FC / Datalogit install

Bump... I have a cool update for this coming soon