[Whiplash7]

Originally Posted by electroguy

Any idea btw where I can get the maps for Classic 500 EFI?

1. A dealer.
2. Royal enfield and its EUC software supplier.
3. An after market remapper for royal enfield bikes.

How did you manage to buy an EFI RE engine separately?
If you managed to get the engine separately then you should also try to get the maps via the same channel.

[Sutripta]

Originally Posted by electroguy

For now, I just have an ATmega16A, 2 breadboards, a few IRF550 MOSFETs, an L293D as gate driver.

What toolchain do you have at your disposal?

Originally Posted by Whiplash7

I would check the amount of air available (air mass sensor in intake manifold) and inject fuel in the ratio of 14:1.

Going by this discission, twice per cycle, 14:1 both times? Any imagination of the relative quantities?

Regards
Sutripta

[Whiplash7]

Originally Posted by Sutripta

Any imagination of the relative quanties?

Good one.

Originally Posted by Sutripta

Going by this discission, twice per cycle, 14:1 both times?

On a more serious note, my suggestion as I said before would be to learn the TDC and then only inject and spark during the correct alternate TDC.

[electroguy]

Originally Posted by Whiplash7

How did you manage to buy an EFI RE engine separately?

We got that from the dealer, it wasn't easy though. The company has some regulations regarding the sale of engines separately.

[ArizonaJim]

It is my understanding that the fuel injection on a Royal Enfield is made by Keihin in Japan and the entire unit and its maps are proprietary.

Your best bet would be to contact Royal Enfield but I rather doubt they can give you the information.