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NathanUK NathanUK is offline
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Join Date: Nov 2006
Location: UK
Posts: 2,002
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My theory is that the air is recirculated back into the turbo (cold side). Your dumping all of the air out of the turbo so then it has to pull new air through the barn door and the air filter, eitherwise it will have to slow down. Surely it would be much easier for the turbo to have its same air coming back. The actual pressure is not really important, although the IC will add some resistance to the air when recirculating.

Look at this way, what's easier.
A pump pumping water out of a shallow pond through a hose.
OR
A pump on a sealed system just circulating the water round and round?
Maybe the difference is not very much, I'm really not sure.
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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.

http://www.danasoft.com/sig/Iamnotanumber.jpg

Last edited by NathanUK; 10-22-2008 at 02:55 PM..
Old 10-22-2008, 02:52 PM
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