MK4 GTI Intake/Airbox

**Stocky789** · 23-05-2017, 06:37 PM

Hey guys,

I am looking at upgrading the intake setup on my missos GTI just for some extra noise and air flow but my question is what are these plugs for on the airbox? What do people do with them once they go a straight pipe to a pod filter, are they important or can they be disconnected with no issues?

**Back Door Shenanigans.** · 23-05-2017, 07:13 PM

AFAIK they are simply placed there to cool it down with the flow going over it.

See,
air box sensor gti 20vt - MkIV (Mk4) Golf & Bora - uk-mkivs

**jmcc** · 23-05-2017, 07:52 PM

That's the ignition control module / ignition amplifier, they're there because apprently it gets pretty hot, and there's a heatsink on the inside of the airbox for it, so the intake air cools it down. Apparently you can relocate it into the engine bay but most people advise you put a bigger heatsink on then.
If you cook it you'll have to replace it $$$ or get a kit and covert it to newer coil packs, usually the 2.0t packs, also $$$.
You can't unplug it because it's a direct part of the ignition, no spark without it.
I've seen some CAI's modified to put it back inside the piping, bit of work but maybe the safest option

**Shmulzie** · 24-05-2017, 01:55 AM

With my intake setup, I have a metal box which I made a hole in to sit the icm in.

**Stocky789** · 24-05-2017, 10:10 AM

Alright, I didn't take a good enough look at it, so it has nothing to do with airflow or anything VW have just mounted it there for airflow?
So i can relocate it elsewhere if removing the airbox.

What do most people do when upgrading there intake?