basically whats best for the octy vrs

i can get either an ITG foam filter or a k+n or other cotton gauze filter.... induction type

cheers

K&N or Green Cotton would be my choice.

There's drawbacks to both. If you get a gauze one you have to oil it every year and the oil can play havoc with the MAF, if you get a foam one the filtration isn't as good so you get more dirt getting into the engine.

Hmmm so gauze looks the best option....

K+n can be had for £35.... Guess ill just give it one light coat of oil

K&N comes ready oiled. I think over oiling could be the cause of some MAF failures. I've always put K&N panel filters on my VAG 1.8T's & never had a MAF oil up.

i had a k&n 57 on 1 of my RS turbos and it made my car slower on the rollers lol. i have used Simota twin cone gauze filters on all my cars for the last 5ish years. cannot fault them.

Any cone filter located in the engine bay is going to lose you power as it's drawing in hot air.

Located front bumper

Lost 5bhp on my old st with a pipercross fitted!

Always use k&n now or gauze filters

Paper?

Paper?

Stockings?

or are they just for fan belts? :(

Any cone filter located in the engine bay is going to lose you power as it's drawing in hot air.

only if you leave it in places to get heat soak. mines down the side of my battery with a cold air feed from the front bumper centre mesh.

I had a Revo stage 1 mkiv Golf 1.8T with a K&N cone fitted as yours with a heat shield, & it dyno'd 4bhp less than the standard airbox & filter!

The OEM one. It has been proven it filters better than aftermarket ones, and the performance difference on an engine like this would be marginal.

The OEM one. It has been proven it filters better than aftermarket ones, and the performance difference on an engine like this would be marginal.

agreed, but... a decent cone and air feed will give a higher "g" reading from the maf, i.e more air going in = Power.

a 3" filtered pipe basicly from front of the car to the maf will give more air flow, than a pipe going into a standard box. There was a test on AudiSport.net a few years ago using the "g" readings from the maff to measure the air flow. 3rd gear at full chat on every test.. there was not much in it but a "ramed air" type cold feed works best. Trials were also carried out on the rollers by someone a while back getting same results.

just remember if you do this, to leave enough "free to air" filtration to avoid hydrolocking your engine if you go through a puddle. . Its like opening the slidy thing on the hoover pipe to lessen the suck! << i said suck :yes:

im only reiterating a test done on a forum by many members. There is lots of right and wrong ways, All i know is K&Ns are poop! (no offence to anyone running 1)

Edited 15 February, 201214 yr by Gee-man