986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post

Lil bastard · 03-16-2008, 10:51 PM

IMO, the Boxster already has a Cold Air Intake.

All the intake air is drawn through the side intake, none from the engine bay.

The existing airbox is pretty well insulated from engine bay heat, unless you're thinking of thermo-insulating the plumbing.

The only significant way to improve it would be to shorten the path by installing a Ram duct somewhere on the rear deck, and then you'd have to worry about hydro-lock in inclement weather from water injestion.

Besides, Cold Air intakes are the realm of forced induction. If you aren't compressing the charge, the difference between ambient air temp and that which reaches the plenum is insignificant for NA, especially for a Street car.

03-16-2008, 10:51 PM	#4
Lil bastard Registered User Join Date: Feb 2008 Location: Du Monde Posts: 2,199	IMO, the Boxster already has a Cold Air Intake. All the intake air is drawn through the side intake, none from the engine bay. The existing airbox is pretty well insulated from engine bay heat, unless you're thinking of thermo-insulating the plumbing. The only significant way to improve it would be to shorten the path by installing a Ram duct somewhere on the rear deck, and then you'd have to worry about hydro-lock in inclement weather from water injestion. Besides, Cold Air intakes are the realm of forced induction. If you aren't compressing the charge, the difference between ambient air temp and that which reaches the plenum is insignificant for NA, especially for a Street car. __________________ 1990 Porsche 964 Carrera 4 Cabriolet 1976 BMW 2002 1990 BMW 325is 1999 Porsche Boxster (gone, but not forgotten) http://i933.photobucket.com/albums/a...smiley-003.gif Never drive faster than your Guardian Angel can fly! Last edited by Lil bastard; 03-16-2008 at 10:54 PM.