I believe that if your going to go with it you have todo the package from the air box to the tail pipe to see the real benefits.
I have also heard that the real gains are in the higher RPM range as in 3000 and above.
I'm just in the process of building mine and was hoping for more bottom end improvements. By going with the IPD I may be adding performance in the wrong place but thats OK (can always use top end )
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My Beast 2004 Boxster SE #0174
- 3.8 with all the internal goodies, Under-mount Pulley, IPD Plenum, 996 Intake, Softronic Tune, 987 Factory Sport Exhaust, skid plates, IMS solution, Ohlins R&T, RSS Toe Links, Camber Plates, Michelin Pilot Super Sport on all 4 corners, Alpine Double Din c/w new speakers & amps.
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