Hey guys need some advice or input. With the new RowJ file I can pull my fuel psi. down to 9.5 on a long wide open run. Well what can I do to bring that up. All I have done is what came with the fass (the hose that runs up to the front). I have not touched any other lines. And here is the bigger picture with what I want to run in my signature and the adjustability in the pulse which I will be getting as soon as it becomes available. Is this thing going to be enough. I have a feeling most will say its not. Based on my research, but I am hoping because I just got this before I heard and then soon after bought an adrenaline. But if she needs to be replaced or upgraded thats what will have to be done. Thanks hope I can get some good insight from you guys.

 

What is your fuel pressure at idle? i believe the newer fass's are adjustable. or with the older ones you can get a slighlty higher pressure spring. i run a 95gph fass on my truck, 15 psi at idle and doesnt drop below 13psi at 700hp.

 

Even at 9.5 psi WOT your safe. From my understanding you don't want to drop below 6 psi. I have heard that there is a spring in the pump that can be stretched that will affect the psi. It will void your warranty however. DieselDan may be able to give you some help.

 

cant pull mine down but i have the big filter 150/150 no difference but ya thats enough just turn it up a little if not

 

well I get 16psi at idle, but if i'm dropping down to 9.5 now, whats going to happen when I throw 150hp injectors on there? Will I need a bigger pump. Can't I change the line from the filter to the VP for better flow. I know i'm good for now but I'm worried about the future. My pump is fairly new maybe 8 months old if that. How do I know if mine is adjustable? Thanks guys.

 

My advise bro, cross that bridge when you get to it. If the 150hp sticks really hurt the fuel pressure. Then do the spring adjustment and loss the warranty. You'll still have a great pump. There's no need to worry about it until you know what it can and can't do. If you already have the Fass system with 3/8" lines I'm not sure you'll see much of a difference if you switch to 1/2" lines. If you still have the stock lines and banjo bolts i would deffinantly up grade.

 

I know the 95 GPH pump will keep up with a 600 RWHP on an ISB or ISBe. Question is do you have the FASS or HPFP? That will help me figure out which way to go with this.