moconnor

iTrader: (14)

It does not fit with my SRM intercooler and it is not the duct that is causing the problem - the intercooler itself is stopping the rear of the cover from sitting low enough. It is possible that the Greddy intercooler sits differently than the SRM so you may be able to squeeze it to fit. The duct itself actually sits quite low.

Mazdabation

iTrader: (9)

thanks comp, actually i knew you can still use it, especially with the stock duct. I m trying to see if i can still do it with another more efficiant aftermarket duct.

Mazdabation

iTrader: (9)

hmmmm got me thinking now if i can use the Pettit duct with the Greddy SMIC and still keep that piece. If thats the case i could get A LOT more cooling out of this IC

moconnor

iTrader: (14)

You will have to do the Cheap Bastard modification of you have not done it already (and you have not, you should). Otherwise, you will have to cut a hole in the top of Pettit duct to direct air to the intake through the stock cover.

primerGrey

iTrader: (13)

One thing I found with a (very well sealed) Pettit duct and the Greddy IC: when the fans come on and the car is stationary, air will flow in a circle through the fans, backwards through the IC, out the duct, and back towards the radiator. This causes the IC to heatsoak almost instantly, of course.

To try to combat this, I put in a small SPAL fan - it fits beautifully on the Greddy SMIC. That helped a little, but not as much as I had hoped, probably because the fan can only cover the portion of the IC away from the downpipe. I think adding a scoop to drop the nose of the Pettit duct and move it forward a bit (like silverbullet's duct below) would help too, in addition to pulling more air into the IC when the car is underway. I think Pettit may have even sold such a thing as on option at one time.

Anyway, it is easy to check for this reverse flow - just hold a string or piece of teflon tape in the mouth of the duct when the fans are on, and see which way the air is flowing.

moconnor

iTrader: (14)

Interesting post - but I have no idea what you are talking about here. The downpipe is nowhere near the IC.

You may be thinking of the M2 intercooler here, which originally came with a separate duct extension.

Mazdabation

iTrader: (9)

Done, done and done LOL. My front cover has no real use anymore except to look stock.

primerGrey

iTrader: (13)

I am referring to the Greddy IC input pipe that runs downward next to the IC core. Because it runs straight down next to the core, it is impossible to position a fan in such a way that the core is completely covered by the fan. I am sure those with a Greddy IC will understand what I mean.

Perhaps so. A number of people have posted about their own custom duct work, and many have done a good job dropping the scoop down. I would recommend that approach.

moconnor

iTrader: (14)

Here are some more pictures I found of my SRM intercooler with the stock duct:




And here is a much cleaner look with a Pettit duct:



The Greddy is slightly wider and longer so I would guess that it will be pretty tight in there with the stock airbox and battery. The SRM just fits with both installed.

As soon as I can find someone to sell me a leter design M2 large, I'll be selling this setup.