spoolin51

I recently removed the driver side headlight cover to feed the intake cooler air. My question is this now a high pressure area and will this affect power? Any other disadvantages of doing this?

http://s1077.photobucket.com/albums/...ent=photo5.jpg

Thom

According to this it may not help much.

Paulyy

the only point in removing the headlight cover if your going to drag your car with 600+ rhwp and needed to maximise airflow to the turbo. but then you'll also have no air filter, just a mouth.

Ben951S

Besides looking ghetto? Dyno with and without... doesn't look worth it... Could drill holes in the cover (do both sides to match?)... but I would Dyno to see if it's worth anything.

lee101315

I installed one of these, it doesnt look as ghetto and does almost the same thing
http://www.lindseyracing.com/LR/Porsche//LR-951-HD.html

I would do something temporarily like that for a street race ( along with pulling the pass seat )...but if youre looking for something permanent, try the lindsey head light cover

Aero is negligibly effected by your present state. And being that you dont have anything funneling/forcing the air into the turbo, you see no other benefit than slightly cooler air.

Willard Bridgham 3

The top of the wing is not the high pressure area.

Ronin-951

I was involved, minor role, with a Bonneville Car. The faster we went, mid 200's, the further the intake needed to be in front of the car to negate pressure zones. There's a bit of Science involved in standing pressure wave zones in the intake, and nothing intuitive about it. We enlisted the aid of a University, everyone learned what NOT to do! Sorry guys, proprietary info. Best to take the Air from a calm environment for overall performance is what I came away with. Extreme ram air measures did get a 2 -3% advantage on the top end.

Chris White

You have to keep in mind that the air pressure diagram does not have a linear link from the coordinate view (top ) and the graph (bottom). The graph starts out under the bumper and works its way up the front and over the hood – look at the coordinate numbers to match the graph to the silhouette.

If you do that you will see that there is a slight vacuum where the head light is/was positioned. The higher the line in the graph the less the pressure – its kind of backwards.

All that being said – removing the head light will not help too much in the real world. It might help for low speed stop and go traffic just because you can seal it and only take in outside air instead of the heat soaked engine compartment air or the air from the fender well (stock intake).
One other point to remember is that when under load the turbo can heat the intake charge to well over 200f (300f if you are pushing the turbo outside its efficiency range). Then the intercooler will cool it back down. Since the boost is controlled by a post intercooler pressure signal the system is self regulating to produce the right pressure based on the post intercooler temps.

In other words – as long as your intercooler and turbo can keep up the preturbo intake temps are not critical. The NA guys are the people that really benefit from the cool air intakes.

Besides…..it looks pretty cheesy!

DDP

Just take the hood off.

333pg333

Rain.

spoolin51

I know it dosent look the great, I was just curious since there is so much heat under the hood even with all our heat wrap. Thought it may be somewhat beneficial. But I guess not.

333pg333

Get vents in the hood to help let the hot air out.