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View Full Version : 7psi what is needed


Mr. Spool
05-26-2004, 12:20 PM
I know this has been covered time and again, but many people offer many different ideas. I have heard that I can run 7psi on stock injectors with an fmu, I have also heard that you can run stock timing. is any of this true?

I have an extra maf to hack and 370's, I also have an fmu. Which should I use and what should my timing be set at?

has anybody used an fmu and stock timing? I know fmax sells it this way.

What size fuel pump should I get or can I use stock? some people claim to have to mess with the fpr with a warblo 255 is this true, or does it just allow for more pressure if the injectors can do it?

I would apreciate it if somebody can clear these confusions up. Preffurably somebody with some sort of experience using or being around these different items.

240eggsx
05-26-2004, 01:23 PM
Use the hacked MAF setup with the walbro 255lph pump... Leave the FMU's to the speed density boys =]

AlexAtPerformanceNissan
05-26-2004, 03:29 PM
Go with an Apex-i SAFC in order to compensate for the injectors size and to control your air/fuel mixture all the way through the powerband so you don't have detonation. Email me if you need an SAFC [email protected]

-Alex B.

Bbandit
05-27-2004, 02:27 AM
I agree.. go with hacked maf, SAFC, and walbro fuel pump

240Stilo
05-27-2004, 04:53 AM
And just so you're more informed I believe 2.6 was the "safe" diameter of piping to use for your hacked mafs setup. Everything else can just be tuned with the safc.

Mr. Spool
05-27-2004, 06:09 AM
so the 2.6 was just about right, was that to lean or to rich, also were would I put my timing at, would 18 degrees work.

240Stilo
05-27-2004, 02:23 PM
You're better off doing a search since I'm pulling this info off the top of my head but I believe 16 degrees and 2.6 ID hacked mafs w/370cc injectors is what has been proven to be on the rich side for safety.