tonycard

On a 2015 IS 250, is it worth to drill a hole in the airbox for added sound? I had the f-sport intake on my previous 350 and noticed the hole that came on it.

itsjdmyo

I did that when I installed my JoeZ intake pipe on my IS350 F-Sport and noticed a significant increase in sound. So yes - I would say it did create a better/louder noise under throttle.

Swacer

I mean...if you want to be incredibly ricerish...sure?

But keep in mind, all you've now done is created a vacuum leak in your intake, thrown off your fuel trims, and confused the living crap out of your MAF sensor.

Jbreezie

doing it in the bottom airbox should not do that.

forum429

You are totally fine if you drill holes on the bottom of the airbox.
You will get similar effect as getting a short ram intake sound wise and performance wise.

Swacer

Please....prove this performance wise....I'd love to see it.

AdvanSLF

want power? just put a NOS sticker on your car... guaranteed 100+hp!!!!!!!!

bhvrdr

???? The bottom of the intake box is pre filter. You will not be creating a vacuum leak or throw off fuel trims. The air still goes through the same filter and intake tract.

Mike

Swacer

Alright, I see what you're saying, but that makes this an even stupider idea...

Just buy a big boy intake OP.

Noeh

iTrader: (3)

The 2IS Fsport intake comes with a hole on the bottom intake box. Works quite well, stock silent under 4k rpm; nice growl when you floor it. It's also pre MAF sensor so no issues with fuel trim. 5hp increase, says my buttdyno.

forum429

Probably too difficult for you to understand since your impression of drilling holes is on top of the air box.
I said performance wise, the result is similar as putting a short ram intake.
If a short ram intake improves performance, so does drilling holes in the stock air box.

forum429

Care to explain why is this an even stupider idea?
Drilling holes in the stock box allows more air into your engine.
Why is it an even stupider idea?

forum429

A Porsche specialist done it on my Porsche 996 GT3 and Carrera 2.
It works but must combine with a high flow filter eg K&N.
An alternative way to do intake mod with out spending extra money.

gvan1998

Because your sucking up all the hot air in the engine bay.
3IS is designed to suck cold air from the front grill

Swacer

First off...its a ricer idea to just drill holes in things in the HOPES of making it better. If you want to do it, get the right parts.

Second, you are drilling holes in the air box, which gets soaked during a rain storm, so now you are sucking water up into the intake and getting water in your filter.

Finally, whats sadder is that you think drilling a small hole in the intake box is going to do ANYTHING. Lets think about something, If you increase the inlet, but the tube to the throttle body remains the same...where are you getting additional flow? If your stock exhaust is the same, and you obviously can't tune, where is this "extra" air going? NO where, you are just sucking thru the hole and less thru the normal flow path. Flow in = Flow out...sorry...thats a fact no matter how many holes you "drill"

This is doing nothing for you, other than being silly.

Ugh...smh