silverboy

Just curious why the design of the Cup car airbox is as such. Looks smaller than the OEM but I'm sure it's far more efficient. Or is it intentionally restricted?

MJSpeed

Which cup, MkI or MkII?

silverboy

Mk I

MJSpeed

The MkI airbox which is essentially the same as a 996 Cup car airbox, is part of a "complete system", in that it works only in conjuction with the cup car decklid. So although the airbox itself is smaller there's more of ram-air effect as a result. The air travels in a more direct route.

That said the MkII airbox seems to be allot closer looking to the street car. They look the same as far as I could tell.

silverboy

Thanks MJspeed. So it's not really the size of the box that counts but how more direct air travels as a result of the ram air effect and the volume scooped in from the deck lid scoops.

MJSpeed

Here's the stock 997.1 RS vs. the 997 Cup:

MJSpeed

Here's the 997.2 RS stock vs cup:

roberga

I will take the cup please

silverboy

Me too! The deck lid of the Cup looks it'll suck a pig into that box!

Larry Cable

I had hoped that perhaps the "RS" intake would be a bolt-on upgrade for the lowly GT3, sadly having looked at an RS close up, the decklid is substaintially different such that you would require the lid and the
airbox in order to modify ...

GT3

Ive been dealing with a company making ^^^^ for me. Its a 100% copy of the OEM RS MK2 wing. Fully adjustable wing, just like the OEM one. My wing will be 100% carbon, and decklid FRP.

Another company, FVD, has a similar one, but the wing is not adjustable, and do not offer the wing in carbon only FRP.

GixxerGino

I am digging this post up because I was wondering if you would have to have the entire decklid for this CUP style intake system?

Or is it there just the bottom panel that can be epoxied to the stock deck?

Tom@TPC Racing

.2 RS and .2 Cup have essentially the same airbox. Only difference is the badging on the box. And Cup doesn't have MAF sensor so there's no screen in the plastic tube. You can install a MAF sensor into the Cup screen-less tube but the engine will idle stumbly and will get a MAF fault code. I've tried it.

.1 GT3/RS and .1 Cup have way different airbox designs. I guess the biggest challenge if one were to put .1 Cup airbox in a street car would be where to put the MAF sensor and will the location produce proper MAF signal to the ecu.

MJSpeed

The bottom panel is epoxied to the outside part of the deck-lid, however unless you can get me an outside part alone I would have to epoxy it to one of my CF deck-lids, whether .1 or .2 is up to you.

Here's my car with MAF and no MAF fault code whatsoever. Significant kick in the pants once the air starts to be fed into it at speed. If anyone is interested let me know.


And here's what it looks like closed.

Tom@TPC Racing

Very nice MJSpeed!!!
I can't see from the photo, did you use mesh screen for the MAF sensor? My car got the fault code without the screen. No more fault code right after adding screen.