Hondata

Currently making plans to relocate the IAT into the runners. I'm not really sure why this wasn't done at the time of the conversion!

I'm not quite sure this explains why it's going lean when hot, though, as I seem to be running without any fuel compensation.

Do the wideband O2 sensors have a ...

So here is the temp compensation table from my current map. Based upon the readings from my IAT, there is no fuelling adjustment programmed into the calibration.

The car has been mapped with the IAT in it's current position. Could it be that rising IATs are causing my lean issue?

https://lh5 ...

https://lh5.googleusercontent.com/-SKsDzv9Esgg/Ug0-CSUs5JI/AAAAAAAABng/ltzfVR5wJRU/w497-h371-no/IMG_1565.JPG

Hi Spunkster,

My IAT is mounted just downstream of the air filter. It's just visible in the photo above, behind the red heat shrink on the throttle cable.

Do you think it could be an IAT ...

I've now updated my original post with two data logs.

Track Log 1 is a log during the first few laps of a recent track session. Fuelling looks ok.

Track Log 2 is a log during a few more laps. AFRs have gone up and my max boost is lower.

I'm really stumped with this one. Any ideas as to what could ...

Thanks for your reply. I should probably have been clearer in my first post.

This is something which only happens during hard. Under more gentle driving, the car responds fine and the AFR stays fairly steady at 11.5 during a pull.

On track, however, the car fuels fine to begin with, but after a ...

Updated with calibration as requested.

One thing I've noticed is that the injector pulse time gets shorter during the step change in AFR.

In other succesful data logs I've taken from the car when it's been behaving itself, the pulse time increases with increasing RPM.

Hello all,

This is my first post, so a quick introduction. I recently bought a Lotus Elise with a K20A2 conversion and JRSC and have had a few issues with maps and lean running.

Shortly after, I discovered the car was leaning out badly under boost. The car was handed to a local tuner who solved ...