This was removed
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replaced with
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drilled a few breather holes in this panel

before
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after
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Cost £17 quid for industrial 90mm extraction pipe

 

I love cheap/free mods!

 

I will be testing the temperature on the intake to see if it rises when stood still. and what temperatures are attained when driving.

Andy

 

What about water?

 

The hose is inside the wing behind the wheel shroud and not directly connected to the breather holes. unless I drive through a 12 inch puddle or river, I doubt that water is going to be an issue, but I will be monitoring the airbox to see if water is getting in, when it rains.

Andy

 

A good mod, but two things to watch;
- make sure the pipe is fixed securely to the airbox, I've had 2 customers now where the pipe has slowly slipped through and ended up resting against the panel filter, causing severely reduced airflow and det on a tek2 type map.
- water ingress can cause a big issue, check it regularly in wet weather to see if it is sucking water in. Not such a big problem with a td series turbo, but an early vf will shatter a compressor blade if you sneeze in it's general direction, so a drop of water hitting a blade turning at god knows how many rpm does tend to cause mass destruction May not be an issue where you've drilled the holes though, but check.

Generally I've found the air vent at the bottom provides enough airflow. I also fit a drain-pipe 45 degree turn pointing down towards the air vent at the front and seal the whole enclosure as much as possible. Only downside to this approach is that it is a bit noisier than having the pipe run all the way down.

Richard

 

Ist test results for temperature- sensor half way up new inlet pipe

weather conditions- raining quite heavily

ambient air temp 41F time 9.44am

test drive 15 miles- whilst driving temp stayed constant 42F with various speeds 30mph to 70mph and 90mph in bursts

Half way through I stopped for 5 mins to check for heat soak

Temp slowly climbed to 49F
Fans came on and temp climbed to 59F
fans switched off and temp dropped to 55F
fans came on for a second time temp reached 65F

Set of driving again and inlet temperature immediately began to drop, it reached 42F after a few hundred yards

Arrived home ambient temp now 42F

I have checked the inlet and there is a little bit of water in there also a small puddle in the bottom of the air box. No water was visible after air filter. I will post photos later.

I think a slight adjustment to the hose inlet position and a low pressure water filter might be needed.

I will repost when I have tried these new items

Andy

 

Don't under-estimate how much air is being sucked through at full chat - if there is water in the bootom of airbox, some made it through the filter, onto the MAF and into the turbo. A nice mist has a beneficial affect on charge temps......but too much will cause MAF mis-reading. Much too much will break a compressor blade. Both myself and a friend lost VF23's on a wet track day due to water ingress - interestingly the MAF readings were OK, but the ****e comp blades were like plasticine afterwards. He had a very similar mod to yours, my slicks wore a hole through the inner arch liner allowing a flood through about 10cms from the airbox hole

To sum up: I'd really work on getting rid of all water as a priority

Richard

 

Yes you are right, I would prefer to see no water at all in the inlet. I will be doing further test in the coming days to eliminate the water ingress issue.

The results for temperature, are encouraging, not a great deal of heat build up when stationary, also the airbox was very cold to touch, its never been like that with the original air intake.

Andy