PLEASE HELP: New sr owner with compressor surge?

ONLY for ADVANCED technical discussion about the 240sx!
rreeaa21
Posts: 9
Joined: Sun Sep 19, 2004 5:42 am

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I have a 93 240 with an s13 sr that I just had installed and got back two days ago. I have a geddy type s BOV and a dna manual boost controller and dont know anything about this stuff. I picked the car up from the shop and it was set at 11psi and now its up to 15psi. How do i adjust the controller, to the left or the right. Also the most important problem is that the BOV works great when shifting but if I let off of the gas quickly at around 8-9 psi I get that fluttering compressor sound. Is that bad and if so which way do I turn that nut on the top. I just dont want to mess up this brand new car. Someone please just explain to me what to do because I am very new to imports and turbos. Thank you in advance.


Silvia007
Posts: 1587
Joined: Thu Jul 25, 2002 6:04 am
Car: 93 Nissan 240SX SE Fastback

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To solve your problem, the TYPE S was the right choice to go. The type s comes with two nipples, top one gets a signal from the intake plenum while the bottom one, to help prevent compressor surge, hooks up to the hotpipe (pipe between turbo and intercooler). If your boost controller is getting boost signal from the hotpipe you can put a "T" in that vacuum line and connect it to the bottom fitting/nipple on the TYPE S. This should solve your turbo surge problem. Compressor surge is VERY bad for the turbo, if it keeps doing that, it may last you a month, two tops. If your car is running at 15 psi, it wont last long either without necessary fuel upgrades. It'll be ok for a while if the weather is fine but on a very hot day running 15psi with the possibity of boost creep, you could blow your engine. For my manual boost controller, turning counter clockwise lowers boost. My boost controller is made by Hallman by the way. Hope this helps.

rreeaa21
Posts: 9
Joined: Sun Sep 19, 2004 5:42 am

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Thank you


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