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Hi I have a usdm evo8 and have been using openecu recently. I was wondering why my afr is not changing after changing the fuel map on my car after the reflash. My ecuflash software seems to work fine. I was able to extract my ROM file and I was even able to adjust my rev limiter and such after the reflash but the fuel won't change. It seems to change in the beginning after extreme adjustment but comes back again to the old afr afterwards. This is a bone stock ECU by the way. And in the beginning I was able to lose my immobilizer code which the dealer change for me and made it 0000. My init code is 0001. My internal ID is 94170008. Any help will be greatly appreciated. Thanks.

Three things - 1) What exactly maps You have changed for fueling?
2) possibly injectors have outruned. I have met this only once on EVO7. But it was only in high rpms.
3) Is fuel pump/system (the filtering net in the tank) in perfect shape/clean?

Normaly pump, injectors and fuel system is NOT a cause of this problem, but might be.