Hondata

- serial number of your K-Pro
1204

- the calibration (as an attachment)
attached

- a data log of a problem (as an attachment)
attached

- what sort of vehicle you have
RSX type S

- what sort of ECU you are using
K-pro upgrade from stock ecu

- anything about the car which has been modified from stock which may affect the ECU
CAI, Hondata IM gasket, IPS KSC cams & valve springs and retainers, other engine components is stock , JR SC @ 9 psi, SSR race header (no cat), Greddy 2 ? inch cat back.

- a specific description of the problem
Problem 1)
When I cruise at a rpm (let say 3000 <- my favourite cruising rpm) with very slight throttle like 2% (has to be very very light or the problem wont happen), the car jerks back and fore enough to move my head. Please refer to the data log. Set up a graph that shows RPM, MAP, and AF. You can find a bunch of high frequency AF change (like going from 11:1 to 20:1). For example, you can find it at 4:10, 4:30, 4:40, 6:30, and 9:40 minutes from the start of the data log.

Problem 2)
At 6:55 to 7:05 minutes into the data log, I brought the car to a stop and the rpm should just go from 1000 to 2000 like 5-6 times and it goes really low once (like to 650 rpm) before it settles down. Idle valve duty cycle adjustment is set high to prevent the car from stalling.

I have read this thread http://hondata.net/forum/viewtopic.php?t=7038.
but my problem is different from his, as the ecu didn't go in "open driving" or "open cold".

Anyone has any insight?

Additional obvervation:

When problem 1 happen (car jerks back and fore during very little throttle cruise), the igition seems to be steady (at 40 degree whole time) and the cam and cam command go up slowly like from 8 degree to 15 degree.

First problem i see, is that those colums of map your in, are usually during decleration, but it looks like its trying to add too much fuel at that rpm, so i added some fuel, try this out.

Try graphing your "s. trim" to see waht i'm talking about.