Legend has it that Porsche stifleld the amount of air available to the engine in order to take a couple of bhp of the performance so the upcoming 993 would be more powerful than the 964. Get more air -> go faster.
So cut a load of holes in the airbox cover.
You'll go faster and sound louder. A fabulous throaty roar under load. You HAVE to do this.
Just in case the supersound causes problems at track days, I bought a spare used airbox cover from Porsch-Apart for £18.00. However, I just passed the Castle Coombe sound test (100db at 4500rpm) with no problems.
Here is the before and after:
For detailed instructions with pics go to Pelican Parts.
UPDATE
In fact Fabspeed in the
US sell a completely holy airbox cover pictured left for $175 and quote:
 | installs in less than 5 minutes |
| the most cost effective and simplest air intake modification. |
| more power absolutely guaranteed |
| more sportscar sound guaranteed, with better throttle response |
| Porsche Motorsport Germany quoted + 8 Hp on
964/C2/C4/Carrera Cup/RS America But why pay $175 when you can get the holes for free? |
