On The Flowbench
Say, a 400cc injector. Say 4ms, 2500psi with a decent 5 holer....400cc's on the dot. 2600psi, 400cc's on the dot. 2800, 3000, 3200, 3400, yada yada yada.....400cc's everytime.
4ms, 2700psi, 248cc's like you drew the line across the beakers with a laser, Always
4ms, 3000psi, 248cc's but you can start to see inconsistency of around 2 to 5cc's across the board. No longer laser perfect.
4ms, 3500psi.....Not 248cc's anymore. Maybe on a few, on the rest....maybe 230, maybe 220, maybe 240.....who knows.
On The Rollers
With stock 7 holers, 2700psi....416rwhp. 28-3000psi, 414rwhp(basically no change). 3200-3400psi, 428rwhp. 3500 up to 3750ish......400 flat at best, and 300's at worst.
Even though the truck made an additional 12rwhp in the 3200-3400psi range, once taken apart the injectors were hurt. Wouldn't flow consistent at any pressure once back on the bench. Fuel plates were hosed. Literally eroded and had to be surface ground to be of use. They are now the same plates I use now after being ground back smooth again. I deemed the increase in power from the pressure insufficient to justify the demand on the rest of the systems. I now happily run 2700-2800ish and never look back.
And for those jumping out of their seat to explain that the "Tuning" wasn't right.... just what is "Tuning" going to change. And remember......you only have three things to choose from, Timing, ICP
and Pulsewidth. That's it. There isn't anything else going in in that engine that tuning speaks for. So what did I neglect to change as well as changing the ICP
that was going to unlock this additional power? Timing, or Pw
, capitolization is apparently disabled in some way at the moment.