//tunedaddy_

the nanocom checks the final two bytes of the .map. they must equal a byte-sum of the file. we recompute that checksum after applying the proven overlay.

a failed flash on an nnn ecu can cause trouble. that's why the flow requires a stock backup, injector codes, a compatible upload, and a checksum-valid output.

the mild tune is conservative. smoke control is changed modestly, but vehicle condition, boost leaks, sensors, injectors, and driving style still matter.

injector codes live in ecu eeprom, not in the map file. save them before flashing and verify them afterwards.

you are not charged. request support and we'll use the demand signal to decide which variants to validate next.

yes, today. see the nanocom page for why and for the cheaper-tool waitlist.

refund wording is on refunds. roadworthiness, emissions and insurance responsibility remain with the vehicle owner; final wording needs legal review.