Hondata

k20a2 with bolt on
kpro v4
aem 30-4110 analog input

the cars works perfect on cruise and wot and idle, but if I accelerate it to idle at 300rpm constant my a/f fluctuates too much
any idea what is going on?

The wideband is reading slow. This can be the 2 sensor or an exhaust leak.

thank

I checked and I have no leak in the exhaust, I always tune in to this same wideband.
My datalogs in wot there are always cell zones that I cannot tune, they are cells that kpro is not reading.
Is it possible that the cause is wideband is reading slow?
The rpm in my datalog a lot does not match my fuel cells and they are areas that I cannot tune in well.
Example my fuel cell in wot at 5000rpm is A/F 13.16 is ok and 4857rpm A/F 12.26, and my load cells are 4500 or 5000 (I know I can change the values) but when it reads intermediate it is either very rich or very read, it's like not average. does not interpolate and averages?
I don't know if this is normal or is there something I am doing wrong?

any suggestion?

I think you just need to drive more in the areas you wish to tune, as that was a very short datalog and it takes time for some of the fields to be able to be populated. This is why it is much easier to tune on the dyno as you can easily vary load and RPM and not have to worry about breaking laws or hitting things wile driving.

If I understand it, I only show you an example, I did a lot of dyno and street runs and I always have the same problem I mentioned, so I ask if this is normal or is there something I am wrong about?
An example if my fuel cell at wot at 4500 and 5000 is at 12.8 a/f, my datalog when reading intermediate 47xx my a/f should be average at 12.8 and not at the extremes or very rich or very lean
How can I correct or compensate those intermediate rpm in which my datalog does not read my preloaded cells?

any suggestion?

The root cause is that the wideband has a slow response. That is what you need to fix.

Ok thanks, I'm going to buy a new one