ECU MAP Studies
Before receiving another CDI 16400-KRJ-792 i decided to run a bit the swing on the road.
And i saw that it was ok upto about 7000/7500 rpm about speed, but after that it was long to achieve 100km/h.
I was suspecting a limitation to A1 (11kw) reglementation, ok that can be from variator or clutch but as i felt it wasn’t. I am clearly limited.
To remind, this is my original file : H8/3687G File
I decided to put it in Claude (Anthropic) analyse with some elements and he found some probable limiters exactly into this zone.
First of all, the step between about 6500 and 10000 rpm is not detailed in the maps, no modifications of injection. We are injecting same between these 2 values….. seems not optimal.
And Second point he found that into CPU program a MOV was done :
| Address | Value | RPM | Role |
|---|---|---|---|
| 0x5A8C | 0x0F5D | 7627 | Primary rev limiter (CMP) |
| 0x6AD4 | 0x0F5D | 7627 | Primary rev limiter (MOV) |
| 0x4D18 | 0x0E39 | 8239 | Secondary rev limiter |
| 0x69D2 | 0x0E39 | 8239 | Secondary rev limiter |
| 0x60B6 | 0x0B61 | 10298 | Safety rev limiter — KEEP |
| 0x60C0 | 0x09F5 | 11769 | Hard cut-off — KEEP |
And this is exactly where i am blocked when i drive it. Like if it was at maximum. But dashboard showing the redzone from 10k to 12k…
I know you will say that dashboard can show what we want but not always how they run. But inside code we can see same rev limiters as the redzone : | 0x60B6 | 0x0B61 | 10298 | Safety rev limiter — KEEP | | 0x60C0 | 0x09F5 | 11769 | Hard cut-off — KEEP |
My first check will be on the first limiter, to put it at 9k. And if it goes better i will have to modify injection map to add the missing rows between 6k and 10k…. to avoid runing without enough gazoline.
To be continued…