suzuka-blue-s2k

Which arms are you talking about man? I've seen arms made for mugen intakes modified to fit the OEM airbox. You will have to trim a little bit on the box fo it to fit right. S2X I believe their name is, sells the carbon mugen intake arms on here, and people got them to work their airbox. You also might have to cut off the whole resonator on the airbox to get something like that to fit. I would love to see the GoTuning Titanium arm modified to fit the airbox, that would look sweet. I dont think I would spend over $400 on one though since I rarely open my hood.

If you want a direct replacement, Samco has a nice, smooth, (I think its made of a thick silicone, correct me if im wrong) arm that comes in black, red, and blue. I want the black one for my engine bay, but I dont wanna spend $140 on one. I might need to stop being a cheap a$$ and just do it.


Here is a link to those carbon ones. There are only 5 pages, so look through there and there are a couple people that made it fit with the airbox without the resonator on it. Also at the bottom of the first page there is a comparison of some of the intake arms.

https://www.s2ki.com/forums/index.php?showtopic=608706

suzuka-blue-s2k

Wow, thanks for those charts man. I'm actually surprised how well the OEM airbox stood up to the PWJDM intake.

Gernby

I understand how a person could assume such a thing. However, a day at an autocross with an OBDII datalogger, and you'd see that IAT's can be 50 degrees above ambient for your entire run. Even with my PWJDM CAI, my IAT's will be 20+ degrees above ambient by the end of my run (down from 40+ degrees above).

Gernby

I don't think I understand what was weird about it. Are you talking about gaining power by openeing the hood and air box lid on a dyno, and being surprised that the dyno showed gains from that? If so, that's not weird at all. That's just one of the reasons why dynos are so sucky for measuring performance of intakes.

clarkster009

Ya, those arms....S2X and the GoTuning one. Now that you mention it, I thought I have heard about the S2X one being adapted to work with stock.

Thanks for the info on Samco but if I didn't do one of those two I would probably either just keep it stock or go with the full intake.

Gernby

Here is a graph showing my stock intake before and after I gutted and insulated it. Red is before and blue is after. BTW, the gutted / insulated box was giving IAT's that were 9 degrees above ambient, and the stock box was giving IATs that were 16 degrees above ambient.

ap1_tot

was wondering how it made resonance when its not running a standard pipe, like how resonance tuning happens on AEM V2s etc. nonetheless, Interesting data logging. Do you guys know where to purchase a SAMCO intake arm for the s2000? i went to the Samco website but it was kind of a PITA to locate..

Gernby

Every tube will have resonant characteristics even if they aren't uniform. Consider all the different types of horns that have varying diameters.

ap1_tot

But isn't there a filter inside the PJDM snorkel? which can possibly ruin the resonance effect? just like how a "sock" or a bypass valve would ruin the effect on a CAI..

ayau

great graphs gernby.

where would i buy the insulation material?

so this was attributed to the insulation of the gutted airbox?