Steve Weiner-Rennsport Systems

Hi Noah:

FWIW,...We've measured a 2-3 HP increase on our engine dyno with the holes drilled in the airbox cover but I don't think anyone can tell that difference.

NP993

That's basically what I meant.

Marlon

It looks like water intrusion on a cut open lid would be an issue if the car is 'sitting' outside while it's raining. It's literally a straight shot through the grill down to your air box. During a heavy rain water is going to get down there - just look down into your engine grill sometime. These engines are designed to allow a thorough soaking and not impact the electrics, etc. Alternatively, stop and go traffic during rain might be an issue. Mabye a Porsche engineer can say definitively.

McGarrett

Drilled out the Air box today. Nice sound boost. Not much more.

Thanks for the feedback.

95 C4 993

I have that Fabspeed air box. Sounds great.