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Model specific boards => Golf mk3 => Topic started by: vwwvgolf on 21 September 2013, 17:14

Title: lower air intake
Post by: vwwvgolf on 21 September 2013, 17:14

i brought some of those lower air intake/brake cooling things for the lower bumper and havent installed them yet. i got some 100mm wide pipe to run upto the air box but theres not alot of space for it all.

im wondering weather to buy some smaller diameter piping, i belive i need about 80mm wide to fit the vent, or if its even worth the hassle. i dont particularly like the looks of the things lol, but got them for the air benefits but do they really make enough difference to buy some more piping?

Title: Re: lower air intake
Post by: tweed on 21 September 2013, 21:08

Best mod for standard airbox performance. 

You need to move the carbon canister to the other side of the bay. Messure the hose diameters and buy 2 metres of each with 2 connecters.

Then you will have all the room you need.

Title: Re: lower air intake
Post by: Screech16v on 21 September 2013, 22:16

Get some 80mm piping and run it from the driverside vent,you need to move/junk a horn to make way ,you will need to relocate the  outside air temp sensor aswell because its mounted in the standard grill/vent

Title: Re: lower air intake
Post by: mark-mk3gti on 22 September 2013, 00:08

I've just fitted some bonrath ones (just need to do 1 screw on each, couldn't do at the time cos car sat too low and I couldn't get drill under to pilot holes, lol) and I found that the k and n tubing fitted inside the hole, just about  :whistle:

As I had 2 of the tubes, drivers runs to induction kit and other runs cold air to engine,

I had to pull the horn towards the opening to get the knn tube round the back and zip tied the
Amb temp sensor to the horn loom,

Reckon the knn stuff is max 80mn diameter and it went round ok, so think you'll be fine.. :)


(http://i870.photobucket.com/albums/ab269/mark3gti/Golf%20Mk3%20GTI%208v/null_zps444cdc14.jpg)

Title: Re: lower air intake
Post by: MickP mk3 on 22 September 2013, 13:11

Heres what i did with mine.
http://www.golfgtiforum.co.uk/index.php?topic=248077.msg2277929#msg2277929

Title: Re: lower air intake
Post by: vwwvgolf on 22 September 2013, 13:36

ill order some pipe then and try tackle this at the weekend,

has any one noticed a difference it makes?

Title: Re: lower air intake
Post by: Screech16v on 22 September 2013, 15:38

Tbh I found it hard to tell much difference ,better the faster you go as I suppose it acts like a ram air intake.
Just don't go wading  :laugh:

Title: Re: lower air intake
Post by: mark-mk3gti on 22 September 2013, 17:52

No real difference to mention, but must be better, if only a bit, cold air is always good!

Title: Re: lower air intake
Post by: vwwvgolf on 23 September 2013, 17:41

wading is not on my list of things to do!  :laugh:

Title: Re: lower air intake
Post by: tweed on 23 September 2013, 19:11

From drilled box to modified box with 80mm hole in box replcing the smaller 60mm hole with cold air feed I noticed between 5/10mph difference down a 1.3 mile straight. I did 10 runs with each airbox.

Engine was a cammed 2.0 8v agg


Well worth doing.

Title: Re: lower air intake
Post by: vwwvgolf on 23 September 2013, 21:57

that what i wanted to hear tweed! bit of encouragement

Title: Re: lower air intake
Post by: andy_k on 30 September 2013, 15:21

My old Citroen CX had it's cold air intake below the front bumper - every time I drove through a big puddle the damn thing used to scoop water up and everything would come to a stop - five minutes later it would start again :)

There must be a more practical solution to getting cold air in to the engine bay