# Review: U2NDYNO the day of the tune and one week later...

**URL:** <https://forums.speedlife.net/t/review-u2ndyno-the-day-of-the-tune-and-one-week-later/116307>\
**Category:** SON240sx Automotive\
**Created:** [June 17, 2008, 12:32pm UTC](https://forums.speedlife.net/t/review-u2ndyno-the-day-of-the-tune-and-one-week-later/116307 "2008-06-17T12:32:00Z")\
**Posts on this page:** 1\
**Showing post:** 16

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**Author:** ![240sxfan](https://avatars.discourse-cdn.com/v4/letter/2/dec6dc/32.png) [@240sxfan](https://forums.speedlife.net/u/240sxfan)\
**Post date:** [June 18, 2008, 10:04am UTC](https://forums.speedlife.net/t/review-u2ndyno-the-day-of-the-tune-and-one-week-later/116307/16 "2008-06-18T10:04:00Z")

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> [@Nick Hogan Whoops!!!](https://forums.speedlife.net/t/nick-hogan-whoops/17337/4):
>
> I was thinking more along the lines of tuning my factory KA ECU when I get the turbo installed.

In order to tune the factory ECU you would need some means of accessing the maps, I do not think that is easily done and would probably require a reflash of teh stock ECU. Daughterboards or EEPROM emulators are probably the cheapest and best method. These will force the ECU to read the board/emulator maps instead of it’s preprogram stock maps. If something goes really wrong you just remove the daughterboad/emulator and you are back to stock.

Someone correct me if I am wrong

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