I drove the car two times only. I boosted it to 7.5 PSI and it planted me in my seat like if I was boosting 10PSI. The weird thing is the car started right up. No black smoke. I did install the SFMU. I try lowering the base fuel pressure w/the Vortech SFMU and it would not lower the FP. I then pulled the Vortech SFMU and installed Dixits SARD FP. The FP could not be lowered with the SARD either. The FP shot up 6PSI from what the SFMU had it I still have my stock FP on my fuel rail. Did you guys remove the stock FP and what where did you guys buy the fuel rail adapter?


FP with SFMU=43 PSI
FP w/sard no FMU=49PSI


The car is not flooded w/fuel and has me very puzzled because FP is pretty high at idle. I called the guy today and he assured me that his injectors came off his 96 300Z TT. I even saw a picture of all his stuff inside the car to include the turbo timer. So they are 370CC injectors. Maybe because they are in excellent condition can I run these injectors w/out lowering base FP? The car idles very very smooth . I did swap out just about all parts from my block to the other and cleaned every component I could, to include the upper oil pan etc....I dont know if that contributed to smooth idling. Vacuum is 19-20Hgs on my boost controller/gauge. Dixit was there to witness the car idle very very smoothly.

 

You can pick up the off the rail fitting from sx7r http://www.sx7r.com/parts.htm

With the stock fpr still on the rail you wont be able to adjust the fuel psi any lower then the stock unit allows.

 

I concur. You NEED to get rid of the stock FPR first Jaime. Then you will be good to go.

 

I made my own rail adapter by drilling out the innards of an oem fpr. I did that because I bought an aftermarket rail adapter and it was such a poor fit that it leaked pretty badly.

Apparently your ecu is able to compensate enough for the extra fuel when in closed loop. That's pretty cool. I'm surprised it wasn't pig rich with a cold engine, though.

 

Jay -

Just periodically check your plugs to look for fouling. If they're aren't...why worry?

Glad to hear everything is running healthy. Make sure and keep it that way!

 

Update. after putting more miles on the car the injectors are flowing way more fuel. Car almost drowned in fuel and would not start. What I did was set the settings low throttle -19 on the SAFC @2500RPMS and mashed on the gas and the car felt a whole lot better. They are 370CCs alright. MY EGTS are freaking low! I am going to have to get that adapter from Thomas ASAP!

 

Man I was puzzled for 10mins trying to figure out why this SARD wouldnt lower the base pressure. Then I took the vacuum line off the oem fpr and it shot up even more, dumb me, it didnt hit me till like 20mins later when I told Jaime, that OEM fpr HAS to come off. I had a brainfart for about 30mins while we messed with it.

Im going to install the SARD tonight as well. Got more than 3hrs of work to do on the car, fix the shift rods, put the shift console back in place, do a compression test (cause i feel like it since I want to make sure I aint mess up anything).

Dixit

 

Everyone is making great progress except Kirk

His damn car is cursed...and now I truly believe him about it!

 

Man do I feel for Kirk. What are the issue(s) left? Is it still the vacuum lines and the car stalling at idle?

Dixit

 

No, the darn thing just will not start at all. No idea either. We are meeting up on Saturday to check it out.

 

I will bring my OBDII joint to do some analysis and live charting to see where the problem might be, hopefully that will bring us some light to the situation.

Dixit

 

Damn thing will not start at all Dixit...and for no apparent reason. The MAF code may be part of the culprit, but I think it would still start...

This makes two cars of friends of mine that are under construction that suddenly will not start for any damn reason...

I am at my wits end. I guess everything needs to be checked a second time...

 

MAXIN, thanks for that link. Purchased that yesterday.


Update. Yesterday the car da m nearly flooded in fuel. So I need this car now to go to work. I pulled up to the house and the car is idling bad! Looked down at the SAFC and always wondered what Low throttle meant. Took it to the settings went to Low throttle on the SAFC. Went to NEPoint 2500RPMS and set it at -19 it was. SO when I drive with sense @ less then 25% throttle the car drives nice and idles sweetly. I love my SAFC Id be toast w/out it. Now after 25% throttle I am in a world of hurt. Is like the car is trying to swallow all this fuel and all of the sudden the car takes off. Its a fuel issue. EGTs are mad low, not good!

 

Question:
Can't you reverse the fuel lines AT THE RAIL so the OEM FPR is before the injectors and your SFMU is after, so you can dial down the base fuel pressure?

Just an idea.

 

I still he would need the adapter plate that Thomas sells regardless.

Dixit

 

I am not going to even mess w/it for now. My other ride broke. I dont feel like messing w/it. Did I mentioned some clown in a modded civic tried to race me and the intelligent individual I am punched it and the moment I did that bam I hit 11.4PSI fck was I mad. That is not part of the plan to boost 11PSI just cause I got big injectors

 

Que?

Didn't Bags swap them, so that means with the FPR in place it's just a "barb" like the opposite end of the fuel rail right?

I could be off, I don't remember exactly, but in theory wouldn't that allow the SFMU to then control the fuel pressure?

 

Come on Jay...shouldn't take but a few hose swaps.