Yes, absolutely, we can request more boost down low. I thought he was referring to HP...

I think the practical limit for K03s is around 2.3 PR.

In real life (MAP) numbers, I am unsure of the pressure drop over stock ICs, but at low RPM hopefully it isn't terrible.

Unfortunately that puts us at 16-17 psi... which is close to where we are currently.

Much less if you assume intake drop of 1 psi (which puts us at 14psi)..

Unless my math is wrong.

https://www.google.com/search?q=%281000mbar-1psi%29*2.3-1000mbar-2.5psi+in+psi

Works for me!

With the ESP button pressed (ESP disabled) you should not get any ASR.

Your mifa/misol is pretty low, might need to tweak KFPED a bit, or bring up KFMIRL in the lower torque request areas...

Don't forget the INPUT to KFMIRL is mifa/misol.

This is a summary of my work thus far.

First thing was to raise the rev limiter, NMAX, to 7000 rpm and NMAXF (RPM DTC limit) to 300 rpm over NMAX:




Next I adjusted the Pedal Position for Desired AFR (LAMFA Axis).

Stock values are 0.5, 0.6, 0.7, 0.8, 0.9, 1.0 and they are changed below to 50, 60, 70, 80, 90, 97.5



The desired AFR is altered in the last two columns (90, 97.499) from 3000 rpm and above, enriching the mixture from 14.7 to 12.5.

Next was modifying LDRXN to alter the boost profile, raising it slightly from the stock profile.



Then some timing adjustments.  On the left side are the original tables and on the right are the current values.  For KFZW2 I lowered the values slightly to try and eliminate the ignition retard that was occurring around 2000-2500 rpm.  For KFZW I raised some of the timing values to try and have a smoother transition around 3500-4000.



And lastly, a comparison of this tune versus the baseline stock file and a pull from a different APR chipped S4.

I'll need to add misol_w and mifa_w to my file and re-log.  Is there a common name to use with those variables?

This is the boost curve I'm thinking of shooting for, based off the MAP reading.