I am working on an airbox mod and cut open the chamber that is at the driver side end of the stock airbox. See photos below. I will post photos of the mod once completed. The mod will achieve removal of the chamber at the driver side end of the stock airbox and routing of a 3" hose from the passenger end of the airbox to the opening that leads into the fender area similar to what has been posted recently.

The Dremel tool is an amazing invention, no garage should be without one.



Closeup of chamber


Hole leading to chamber from air filter chamber.

 

Thanks for posting! This is exactly what I was inquiring about a few pages back, and plan to do the same.

By the way, I will have to double check I am almost sure I used 4" dryer hose, not 3". I have 20' of it left over, so I can check when I am home.

 

I purchased Spectre 3" duct ($25) and flange ($7) off Amazon. The 3" tubing fits nicely and it's black! The 3" hole in the box can be pushed forward more than a 4". The flange required some trimming to allow this on the inside. See photos.

Spectre 8741 Air Ducting 3' Black


Spectre 8148 Intake Duct Mounting Plate


3" box hole and flange

 

I plan on something a bit different. I think I can recreate some of the Mugen type idea using the stock airbox.

I just need some spray foam some black plastic and some plastic rivets. I may as well put some insulation on it as well.

 

I purchased Spectre 3" duct ($25) and flange ($7) off Amazon. The 3" tubing fits nicely and it's black! The 3" hole in the box can be pushed forward more than a 4". The flange required some trimming to allow this on the inside. See photos.

Spectre 8741 Air Ducting 3' Black


Spectre 8148 Intake Duct Mounting Plate


3" box hole and flange

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Wow, I think you guys are going a lil bit overboard with the size of tubing. Remember that hole you're sticking the tube in, there really isn't an inlet in there that lets fresh air in. More likely some of the air that ends up going in that cavity will be from the engine bay which will be hot air. If that was such a good place to get air from, I'm sure the engineers would have plumbed air from there in the original design. My tubing will be much smaller to SUPPLEMENT the air coming from the original inlet. I just want a different inlet so throttle response is a touch better. I will also create a cover for the hole going to the fender to prevent the hot air from the engine bay from going inside. The original hole will suck in cold air just ahead of the radiator at speed, so I want the primary source of air from the original inlet.

BTW Rob, be sure to dremel off the wall/partition in the airbox. I believe that will help throttle response.

James Yom

 

check out this thread guys. he kind-of did a mod like what you all are attempting.

https://www.s2ki.com/s2000/topic/841...#entry20190513

 

STR legality question.

Based off the rule change it looks like x braces are allowed and CR front lips. What about the rear wing?

I see xbrace as being legal here.
3. Lower suspension braces must be attached to the lower suspen- sion pickup point locations on the chassis within 2 inches (2”, 50.8 mm) in any direction of the actual suspension attachment to the chassis.

Cr lip being legal here.
F. Addition of spoilers, splitters, rear wings, bumper covers, valances, side skirts, and non-functional sccops/vents is allowed provided that either:
14. STREET TOURING CATEGORY — 81
1. It is a production part which is standard or optional equipment of a US model of the vehilcle
2. It is listed in the vehicle manufacturer’s US accessory catalog for that vehicle for normal highway use.
Parts must be installed as directed by the manufacturer. Exact repli- cas (including weight) from alternate sources are also permitted.

From what I have seen a proper installation of the CR wing requires a new trunk lid with the extra reinforcements. Would that be allowed as part of the installation along with the bumpers that prevent the extra force from pushing the trunk lid down too much?

 

The way I read the rules, the intent is to allow the wing, but the installation of the CR wing is the questionable part. To install the wing by the Honda shop manual, you would need the CR trunk lid, which wouldn't be legal for anything but a CR. And as you know, the CR trunk lid is very different than a base lid. If there are instructions from Honda to install the CR wing, on to a base lid, then it will be legal to install. Again, the intent is to allow the CR wing, but it is the installation that will pose a legality issue, one that will need to be clarified in Fasttrack. Out here we have both methods of installation on STR S2000's, one is a base with the CR lid and wing (not an '08) and the other is a base lid with the CR wing drilled into it (also not an '08) I have no issue with either car, but I feel the installation of such a part will need to addressed to eliminate any grey areas.

The way I interpret the rules is, that you would have to drill into the base lid, and using the CR trunk lid would not be legal on anything but a CR. Either way, I don't have issue with it, I just don't want to see those that have done the mod get into trouble at a big event, due to a clarification issue. I have no intention of using the CR wing on my 08 base, I really like the looks of the trunk lid spoiler.

Jeff Cawthorne

 

Hah, me too. Wish you had one on my car.

 

There is one big problem I see. The CR lip will fit an AP2 bumper... True. However, one must drill holes that were not in the bumper before. I highly doubt that the CR Lip part is sold in a honda accesory catalog with instructions on how to install the CR lip on a normal AP2. Basically, just like what Jeff said regarding the Wing.

Shame really, very hard rule to write. A lot of people on both sides of this issue.