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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


 
 
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Old 03-18-2014, 11:25 AM   #1
tx_jc_s13
 
Join Date: Feb 2012
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Boost creeping!!

Well here's the scenario. I have a rb25 Freddy intake, tomei mild cams, cx racing top mount manifold with a bb gt35r. Wg dump tube is a screamer pipe. Hks bov and Tial 38mm with a 6 lb spring. The wg is vented to atmosphere on top port and bottom port is connected to a nipple on the intake housing on the turbo. As I drive the boost creeps slowly up to about 22 psi. So I pulled the wg out to check for leaks. Only a small leak around the valve which is said to be normal. When connected to a Manuel bike pump the wg opens fine at around 6 psi. Also checked the wg on the car with the car running, again connected the pump to the wg (wile car is running) and you can clearly hear the valve open. When I checked the port on the compressor housing for vaccum it's around -5 to 0 psi at idle. When at the manifold my aem gauge says I'm -20 psi at idle. Any ideas?!?
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