giorgioerrani

anybody knows if the rs 4.0 airbox is fitting with gt3.1 intake ?

same diameter intake ?

996FLT6

Is the throttle body same size diameter with 3.8 gt3's? Mike

Nizer

Suncoast sells the box. Website claims fits 2010-2012 RS but I would talk to them directly.

http://www.suncoastparts.com/product...de=997gt32perf

TRAKCAR

I thought my 4.0 dive planes were expensive......

Hoosier_Daddy

Vanity is expensive 'cause even if one does manage to somehow get it on the 997.1 GT3 -- it ain't making a difference.

edwin814

So are you trying to fit the 4.0 CF airbox in a mk1 gt3? According to Suncoast, the fan will interfere with the airbox. So you'll have to swap it out for mk2 decklid.

mklaskin

So if there were an alternative carbon airbox to the factory 4.0, would anyone be interested?

lopro

is it different to the x51 box?

CRex

Yes! Doesn't need to have the CF bling, just something functional and reasonably priced.

mklaskin

We're working on a Gruppe M intake for the 3.8 that will offer a better flowing, conical filter setup, at a more reasonable price.

More details soon. Stay tuned.

Yoops Racing

I thought I read the intake plenum for the 4.0 is different than the 3.6 an a 3.8 , so I would think adding this OEM airbox and the correct throttle body to a 3.6 or 3.8 would not give the desired results w/o swapping all the plumbing out and then this may even be more of a issue w/o flow testing and ECU changes....and geez the price is slightly high...

Correct me if I am wrong but doesn't the GT3.1 airbox already breathe pretty good? I have not seen any dramatically better airbox setup from a flow standpoint for a GT3.1...has anyone else?

911SLOW

With a 3.6 you don't need a better airbox than stock. If you must do something then a quality panel filter (that you will never re-oil or attempt to "clean") is enough.

Now for a 3.8 -4L conversion perhaps creating a second intake would help.

This is the Manthey solution for their converted mk1 cars.


https://rennlist.com/forums/8588587-post44.html

In any case whatever you do make sure that the airbox is sealed from the engine bay.

Serge944

Yes, it probably makes sense to upgrade the entire intake tract if your ultimate goal is performance vs carbon bling.

Fortunately, Porsche doesn't like to make too many changes ($$) so all the parts work between the models. I was able to install several 997 intake pieces on my 996 engine, for example.

mklaskin

The airbox for the 997.1 GT3/RS is different from the .2 GT's. We have a unit that fits the 7.1 and it's much more reasonable than the Porsche part. Aside from the carbon construction, the 4.0 has conical filters, where as the 3.8 is a flat panel.

For the 3.8's, we'll test the unit to insure better airflow, without having to reflash or set off the CEL, before we bring it to market. We're in discussions with a noted tuner who will actually sell them.

Ours will be sealed.

Larry Cable

RS or non .2?