OK guys, there's no need to get into a flaming war!
In my opinion (take it for what it's worth), one of the first cost-effective upgrades people do to their turbocharged engines (whether Porsche or Ricer) is to fit a free flowing intake/filter and up the boost slightly. These seem to be the cheapest mods one can do to squeeze out a few extra ponies.
For those of us who are cost conscious, try drilling the factory airbox with a few 2" holes and do a G-Tech (or dyno) run and observe results. If there aren't any major gains to be had there, then chances are that a K&N or Powerflo won't contribute that much more apart from a cool sounding induction noise
I guess it would be interesting to see back-to-back dyno comparisons.
The next stage would be a free flowing exhaust or muffler and then a larger more efficient turbo & intercooler.
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Merv
'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
