Why do you say it doesn't filter as well? I haven't read any reports to that affect. The oil holds the dust. I've installed one on my 1992 960 about 30,000 miles ago. I've noticed increased gas mileage (26-28mpg at 70-75mph highway) and increased top end performance(S mode 4500-6000 rpm).
I have also installed one on my 1800E and noticed top end performance improvement and a slight mpg improvement. Many 1800 owners have used them to allow the engine to breath a little easier at top end and gain a little power.
The size of the air intake going to the filter is too small. To extract more power out of an engine you generally need too things... more air and more gas. Thats the purpose of the intercooled turbocharger to compress more fuel and air into each compression stroke. On normally aspirated engines sometimes one does need to modify an overly restrictive air intake to allow it to bring in more cooler outside air.
Craig
92 960 145,000
96 960 75,000
87 745T 170,000
71 1800E 300,000+
67 P1800 80,000
66 122 345,000
66 122 150,000
67 122 200,000
|