Stephen has said he dyno'd those intakes and that they do work. On and off the same, the same day etc etc.
Here is a snippet from an email.
>>> Basically the intake adds 8 overall and 13 peak. The whole air box and
>>> system from the factory is simply not very good. It promotes a vortex,
>>> you do not want tin the system. The box will remove it.
Here is the one he sent me
1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.
1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.
Last edited by NathanUK; 02-11-2007 at 12:26 AM..