Are you sure you aren't dropping rail pressure? You're running out of fuel, so you're FRP isn't high enough, your injectors aren't modeled correctly for those pressures, etc.
It's hard to really know the whole story because the log is missing boost and FRP, etc.

If you're exhaust was leaking pre-oxygen sensor you'd actually see a false rich reading as oxygen makes its way into the exhaust. It'd also probably not be RPM dependent.
Boost leaks also tend to go rich as air that it thinks it had wasn't actually there. On this car it's not as likely though because you'd have to leak post throttle body I believe for that to happen. (Or maybe it's pre-intercooler? I can't quite remember).

Your HDFXs are also incorrect. Do you have the latest alpha download from COBB? They fixed the HDFX table values. Your's add up to far beyond 100% and oscillate far too much. @COBB would I be right in assuming this isn't the latest firmware? It almost looks like the gain on the value was too high and it overflows and wraps back around.

 

I've instructed the customer to install the new Alpha fw. He will be re-logging tonight.

Regarding the FRP, on an earlier log, the FRP is holding(2400PSI, intank pump is @90PSI). This datalog in post #1 is done on 20psi(peak) only. I have asked him to include it in the next set of logs.

Thx for taking a look and giving a second opinion.

 

Latest logs with Alpha update applied, i think i have found the issue..

He needed some more kms on the map for the fuel trims to set in..

http://datazap.me/u/scarlett007/morne-v20343-24-07-14-more?log=0&data=1-2-7

 

Glad you got it bro. I meant to tell you in the email if you raised fuel pressure above 2200 psi, rescaling the injector flow to the new peak makes a world of difference on trims and fuel delivery.


Sent from my iPhone using Tapatalk

 

Thx man, I did figure as much

 

Is it helpful to rescale the Y axis flow for the desired fuel rail pressure as well?

 

It may be.
You have to log FRP y-factor and see. If you have y-factors above the table that are not getting satisfied by your requested pressures for the max y-factor, you may look at rescaling the table.