I did an air box hot-air flap mod on my '95-945 na. Removed the box, used a 1/4-20 drill to drill a hole through the box and flap, and fastened it with a double nutted 1/4-20 bolt. Not too tight, just right. I snaked out the plastic cold air intake pipe to inspect and noticed the air scoop was facing the back rather then the front. I thought a little ram air would be a good thing. I didn't mod it.

Check those vacuum hoses. We have heard that a lot. Removal or the air box allowed a close inspection of the canister hoses. I found a leak at a dual diameter hose that connects a narrow hard plastic tube to a larger canister barb. A temporary tape patch is in place now. I think I can fabricate a replacement.

Question on the '95 944 turbo air box. I didn't remove it yet but it is not obvious where the cold air intake is or the warm air intake is located. I think some folks have made the air box flap mod on a turbo.

Unrelated: http://www.brickboard.com/OPINIONS/index.htm?id=657885
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Tom F '95 945na, lien holder on a '95 944Ti, RIP '78 244

My 940 Turbo airbox does not have the warm air intake, flapper, etc. There's a hole near the bottom of the box... a mirror image, I think, of the cold air intake on the fender side... with a plastic plug in it. If yours is like mine, no mod is necessary.

- Brian '93 945T

The air intake on the turbo is in the fender cavity via a rubber gasket in the side. You have to remove the box to see it.

steve,

2 questions...

1. what are your opinions on the ability of that fender cavity in its action on restricting the breathing of the engine...

2. inside the 'neck' of the airbox is a restrictor sort of like a plastic ear trumpet...restricts down to maybe 1.5 inch diameter hole, it just pops out of the airbox neck - do you know why its there...seems dumb on the face of it to restrict air flow...and being where the intake is I cant see how it would 'straighten' airflow as I have heard suggested, or indeed how it would stop water etc ingressing into the airbox...