I have the APS TT on stock block running 9-10 psi.

I've just got the CJM stage 1, jwt cams, and deathwerks 600cc injectors installed. my question is, what should I set the fuel pressure to?

 

45psi

 

what kind of ems are you running?....................when i did research on this subject about 6 months ago some people told me 40 to 45psi but alot more people told me 50 to 52psi and said don't go under 50psi because of the way the VQ atomizes fuel

 

anyone else??

 

50-53 psi

 

i would set the base pressure (when vacuum line is not connected) to around 43-45 and go from there. you have enough injector to max out your stock engine at normal fuel pressure, no need to go high.

 

This is how I adjust my fuel pressure a year ago to 58 psi and it was perfect. But 2 weeks ago i change my fuel pump twice because am facing a problem that the fuel pressure is getting higher on normal driving then drops to 35psi when i go over 9 psi of boost. what do you think the problem is. Please advice I try everything but nothing works.


Thanks,

 

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