2Lucky2tha7

iTrader: (3)

First off, I'm running a Megasquirt ECU, not a STOCK ecu.
Anyway.
I searched alot and I can't seem to find the answer that I'm looking for.
On my street-ported N/A, I'm currently have my regulator set to 50 psi static fuel pressure (aka: fuel pressure is currently at 50psi at WOT) and I'm wondering what psi to settle with, because I'm in the process of re-tuning my fuel map for my 550/680 injectors, so now would be the best time to set this. I'm wondering how high I should go. As I searched, the only thing useful that I found was what ReTed said a few years back in a post:
"In the top-feed ND fuel injectors, we don't see any gain after going past 70psi of fuel rail pressure.
So, keep the maximum under 70psi."

I'm still running the stock fuel pump (TII pump if it makes a difference---can't remember if it's the same as the N/A pump or not).
Reason for doing this? Looking for best fuel atomization and better efficiency without any ill effects.
If I set my pressure too high, will it strain my fuel pump too much as it tries to hold that pressure?
Any suggestions??

-Brian

2Lucky2tha7

iTrader: (3)

anyone?

rotary8

37- 40 Psi And Then Go From There .

2Lucky2tha7

iTrader: (3)

Like I said, I'm already at 50 psi (injectors are tested at 43.5), and it already runs better with my current tuning. I'm wondering how high I can push it before I have any type of "detrimental effects"

2Lucky2tha7

iTrader: (3)

On turbocharged cars, I set it anywhere from 40-45 psi depending upon max boost, but my setup is for an N/A.
On a turbocharged application set to 40 psi static running 20 psi of boost will see 60 psi @ 20 lbs. See what I'm getting at?

2Lucky2tha7

iTrader: (3)

I guess I'll keep it at 50