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NathanUK NathanUK is offline
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Join Date: Nov 2006
Location: UK
Posts: 2,002
Originally Posted by carrera turbo View Post
while out driving tonight i noticed that when running a hard pull in third gear my boost gauge would max out at 1.0 bar then drop back to .8 around 6k rpm. is this normal
Not really, that's quite a variation of boost.

1 of 3 possible things are happening.

1. Your turbo is too small and can't make enough boost to maintain 1bar all the way to the red line.

2. Your wastegate cannot dump enough exhaust gas so the turbo overboosts. This could be bad header design, sticky wastegate or simply the wastegate dump pipe being an obstruction.

3. Possibly your recirculation valve/assembly is wasting boost so you cannot maintain 1bar all the way to the red line.
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.
Old 08-05-2008, 12:54 PM
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