//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.

yes. writing the map erases and rewrites ecu memory. interruption, unstable voltage, a connection problem, incorrect operation or faulty equipment can leave the ecu and vehicle unusable. a compatible upload, checksum-valid output, original-map backup and saved injector codes reduce risk but do not remove it. use a proper stable power supply and follow the official nanocom guide.

the available 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. upload it first and we will tell you whether we can help before you choose a tune or pay.

you need access to a nanocom evolution to read and write the map, but it does not need to be yours. A borrowed or workshop unit can work when its td5 map function is enabled. See the nanocom page for details.

refund wording is on refunds. our tune files are supplied only for off-road, motorsport and closed-course use where lawful. they are not produced, tested, approved or certified for public-road use. lawful use, emissions, roadworthiness, approvals and insurance are your responsibility. see the terms.