Classic ECU mapping

GENERAL
1

I have managed to get the engine running. The engine is standard, but uses a different inlet manifold albeit with the original throttle body.

The ECU is set up to run as Alpha-N using TPS and RPM (no MAP sensor). It will start and idle but the VE table numbers look very odd - it will only start and run with the VE for RPM vs TPS around idle of around 9. I have tried to find the injector sizes - there isnt much info but I believe that they are around 126ccm. I have calculated what the size should be and it comes out at 123ccm so I am in the right area.

I can get the engine to rev if you very carefully open the throttle but it needs a lot of coaxing.

Two questions:

  1. Is there something fundamentally wrong that means the VE numbers are so small?

  2. To get the engine to rev - is it just the enrichment settings or is there something else i should be looking at?

Micra 20250816 v2.zip (12.5 KB)