S2 air box mod

[vonbeck]

Has
Anybody got any pictures of the above ie where to drill holes etc I don't want to butcher it any advice and tips would be great, as I'm not paying silly money for an RS 2 one




Sent from my iPhone 5
using Tapatalk

[Acidburn]

cut the front out underneath the filter line (rusty did this before so might have pics, i'm not sure I took any of mine)
then drill the drivers wing side of the box with a big drill big under the filter line and away from the engine side to keep heat soak to a minimum. Just get a good filter in it after that and it will sound good.

[vonbeck]

good filter do you mean in good condition or k/n ITG or standard filter ? cheers and when you say big drill what sort of size do you mean 1" 2" etc or just enough to be under the filter line to bottom of box?

[UrS4boy]

Has anybody got any pictures of the above ie where to drill holes etc I don't want to butcher it any advice and tips would be great, as I'm not paying silly money for an RS 2 one

Any holes you drill in the airbox will deliver warmer/hotter air than the stock airbox inlet. That will potentially degrade your performance if the intercooler can't keep up.

[Rusty]

Rip out all the plastic crap behind the headlight and fit a 3-4" cold air feed if you can, makes it many times better than stock and addresses some of the above downsides compared to bone stock. Holes are for sound and it'll both sound and function better than an open cone filter. There's a thread I did on all of this, more than likely a sticky.

[andy10v]

I got a 3" bass port from ebay for about £5, removed the original trumpet, enlarged the hole and fitted the larger trumpet, modified the behind the headlight trim to suit.

[vonbeck]

I got a 3" bass port from ebay for about £5, removed the original trumpet, enlarged the hole and fitted the larger trumpet, modified the behind the headlight trim to suit.

mm good idea

[andy10v]

It may have been a 4" port, I really cant remember.

ADU v ABY for reference

(pictures stolen from mcandmar http://www.s2forum.com/forum/showthr...+airbox&page=2)





I would chamfer the pipe so the air can flow up to the filter more easily, like the adu trumptet is, I cut it right back to where it enters the box.

Not really much you can do about the volume above the filter though.

[montez]

Yeah done this, removed the original port and holder and replaced with aluminum bass port held in place by large juberly clip from inside. I then formed a new aluminum shield to fit behind headlight and modified the under light trim to provide a cold air feed