Here's some real tuning data...answers and epiphanies inside

[vrg3]

Phil - Yeah; like I said, it was a cheap little gizmo.

Matt - The scan tool doesn't report injector duty cycle; it just reports pulse width. I think you're remembering when we were doing quick calculations of IDC in our heads.

Chris - That's not a bad idea, assuming this assessment is correct. Phil's 90% could very well be flowing the same as 100% anyway.

[free5ty1e]

True. Just throwin' it out there, if we determine that would be beneficial I'd love to try hookin' one up and see what she did for the ol' EGTs.

How much boost can our MAP sensors read? Hmm...

I'd probably want to ground the injectors at anything above say 16 psi in my setup. Right now, that's where the EGTs approach 1600*F in the mid-to-high range RPMs.

[DeusExMachina]

Our stock MAPs read to about 12.5 psi I assume, a little more than fuel cut is. I'm using a MAP sensor I got from Zeitronix, 3.5 bar.

[-K-]

Well the ECU won't use the O2 sensor data at WOT so.... it's not going to adjust for the real AFR.

Have you raised the fuel pressure any? That will let you get more out of your injectors.