Hey everyone. I have finally gotten to a point to where I'm driving my car some and watching how things are going. My car is going lean above 5500rpm.(over 100% duty cycle) and still high 12's AFR. I am wondering if my pump is not able to keep up. I will be changing the fuel filter and such first, but wanted to have other opinions of the A1000 on my setup(and to help me narrow down the problem I'm currently having.)

general setup

-Supercharged EFI sbc (20 lbs of boost)
-around 650 rwhp
-A1000 pump
-1/2 line to the front
-splits to dual 6an lines to the rails
-aeromotive 1.1 increasing fuel pressure regulator
-80 lb injectors
-46ish base fuel pressure
-I am using the aeromotive controller(so I should check to make sure it's operating correctly as well)
-Data-log shows at least 12.7 volts during the entire run

Of course I am going to put a fuel pressure gauge on the window first, but sadly it won't hook until third and by that time I'm going near 100 mph. Sucks to have to go that fast to troubleshoot. I may end up on a dyno, but then it will be on and off until it's fixed.

Anyway, ideas or recommendations?

I plan to go with meth and the car should make near or over 700 at that time. Will this pump be good for all of my goals?

 

My truck runs an A1000 with Aeromotive pre/post filters, -8an supply line to the rails, ending at an Aeromotive 13101(I think) regulator. My base psi is 50 and I'm boost referenced to 22psi at 1:1. I have no issues with drop off in pressure. Maybe a fuel line or voltage restriction in your case? With the -8 to -6 split is it a Y connection? What size supply wires to the pump? Have you tried bypassing the pump controller (I don't use one)?

 

Dont stock ls1's run on 50-55 psi stock? Thats probably the minimum psi you should run.

 

58psi to be exact. You can run others. It's all in the tuning.

 

Just to update the clogged Aeromotive filters are surely to cause problems.

Replace d them and we are good to go.


Now, back to tuning and meth installation!


Thanks