SR20DET max boost with stock injectors

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mida11
Posts: 4
Joined: Tue Jul 26, 2005 10:53 am

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If someone still remembers me I'm the one who blew my SR20DET engine on my 200SX S14. I finally got my JDM SR20DET blacktop replacement done. Now I'm running GT28RS, stock SMIC, full "3 exhaust, "3 downpipe, free flow air filter, stronger clutch + boost and AF ratio gauge. No boost controller, cause the boost stays up around 14psi. I have not been able to set it lower, my mechanic tried to do it by regulating the actuator, but it didn't help, boost still goes up to 14psi. How can I turn the boost down to ca 10psi? I have driven with this setup for a month, everything works properly. At full boost 14psi my autometer AF ratio gauge shows 3 green sticks on the rich area(lambda sensor is also new). Next week I am installing large FMIC, Walbro 255lph in-tank fuel pump and HKS BOV. What would be the max safe psi limit on this setup with factory ECU and 370cc injectors? I have to drive with this setup around 3 months until january, then I am able to install 740cc injectors, proper ECU and Z32 MAF.

Old stock turbo turbine wheel when I bought the car (found it from exhaust pipe):

http://www.es-tuning.ee/l2bu/laba.jpg

Red silicone and old engine vs new JDM engine:

http://www.es-tuning.ee/l2bu/200sx/


Modified by mida11 at 5:50 AM 9/30/2005


User avatar
C - ROD
Posts: 563
Joined: Sun Sep 18, 2005 5:01 pm
Car: SR20DET pignose hatch

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dude if your gauge is saying its ritch @ full boost then youcan run more boost. but i would keep it right there also the sidemount cant handle a lot of boost


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