So I'm having a really weird issue with my stock K20A2 I/H/E and Kpro ECU and I need help from some Honda gurus. I recorded datalogs of two fourth gear pulls, and it seems like at some random RPM (7400 RPM in first file and 8600 in second datalog) the ECU ******' forgets what calibration it's running, because the AFR suddenly goes super rich (duty cycle spikes from 83% to 92%) and the ignition advances 2 more degrees than the ignition tables or the knock ignition limit tables command it to. This did NOT happen in second and third gear pulls I datalogged during the same night or previously when I dyno tuned the car and datalogged numerous times on the street. One of my friends said it might be the alternator going bad, so I checked the voltage and it goes from 14.0 v cruise to 13.7 v WOT. I don't know if that's normal or low or what the deal is. Any ideas or help is appreciated.

(I would attach the datalogs and calibration but apparently this website doesn't accept those file types).

 

Bump

 

Dude who cares. Its slow either way.

 

Go get it tuned. You live in Miami.

 

Wow thanks, very helpful. It's an issue because the ignition advance causes some knocking.

I already tuned it myself. I'm not a complete expert but I know enough to tune it properly. Some one on k20a.org looked at my datalogs and thinks it may be the WOT comp (cat protect) table, which makes sense because to lower EGTs you advance ignition and dump fuel. But that only explains half of it because there's only a table for fuel, none for ignition. It's just weird because it randomly started doing this, and I don't even have a cat and I have the secondary O2 sensor disabled in Kmanager. So I have no idea what's telling the ECU the EGTs are too high.