fuel pressure?? help please - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

bonez59 · 1st August 2005, 07:33 PM

hello, ive just put a HKS fuel pressure reg on my r32 GTR, i am running a fuel pressure gauge in the car, but i havnt got a clue what pressure to have it set on when on idle, and any idea what it should go upto when on boost, im running 0.8bar on high, dont know if this makes a difference or not??? and what about the size of the vacume hose to the fuel reg? does this make a difference?? The only reason i dont know what the car ran on the std reg is cause it broke before i put the gauge in. Please help, many thanks Ian

GTR-Zilla · 1st August 2005, 08:02 PM

3 bar is standard, with vacuum pipe removed at idle.. what ecu are you running?

bonez59 · 1st August 2005, 08:30 PM

std ecu, std injectors, std turbos. Nice one, any thing else that i need to know??

GTR-Zilla · 1st August 2005, 08:36 PM

set it to 3 bar with the vacume disconnected, thats 43 psi and the injectors should flow 444cc assuming they are in good cond.

bonez59 · 1st August 2005, 08:41 PM

spot on, ill give it a try tomoro and see what happens, i did set it to 3.4bar but with the vac hope on, many thanks ian.

1st August 2005, 07:33 PM	#1 (permalink)
bonez59 GTROC Member Join Date: Aug 2004 Location: Deep in Hampshire Posts: 194	fuel pressure?? help please hello, ive just put a HKS fuel pressure reg on my r32 GTR, i am running a fuel pressure gauge in the car, but i havnt got a clue what pressure to have it set on when on idle, and any idea what it should go upto when on boost, im running 0.8bar on high, dont know if this makes a difference or not??? and what about the size of the vacume hose to the fuel reg? does this make a difference?? The only reason i dont know what the car ran on the std reg is cause it broke before i put the gauge in. Please help, many thanks Ian __________________ NURBURGRING in 7,52s!!!!!!! *AEM* R32 GTR. JE Pistons T78 3 large fuel pumps should do the JOB 202.8mph on GPS good, melting piston at the same time not good *MARLON MOTORSPORT*

1st August 2005, 08:30 PM	#3 (permalink)
bonez59 GTROC Member Join Date: Aug 2004 Location: Deep in Hampshire Posts: 194	std ecu, std injectors, std turbos. Nice one, any thing else that i need to know?? __________________ NURBURGRING in 7,52s!!!!!!! *AEM* R32 GTR. JE Pistons T78 3 large fuel pumps should do the JOB 202.8mph on GPS good, melting piston at the same time not good *MARLON MOTORSPORT*

1st August 2005, 08:41 PM	#5 (permalink)
bonez59 GTROC Member Join Date: Aug 2004 Location: Deep in Hampshire Posts: 194	spot on, ill give it a try tomoro and see what happens, i did set it to 3.4bar but with the vac hope on, many thanks ian. __________________ NURBURGRING in 7,52s!!!!!!! *AEM* R32 GTR. JE Pistons T78 3 large fuel pumps should do the JOB 202.8mph on GPS good, melting piston at the same time not good *MARLON MOTORSPORT*

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1st August 2005, 08:02 PM	#2 (permalink)
GTR-Zilla Banned Join Date: May 2005 Location: London Posts: 2,099	3 bar is standard, with vacuum pipe removed at idle.. what ecu are you running?

1st August 2005, 08:36 PM	#4 (permalink)
GTR-Zilla Banned Join Date: May 2005 Location: London Posts: 2,099	set it to 3 bar with the vacume disconnected, thats 43 psi and the injectors should flow 444cc assuming they are in good cond.