# ecu/fuel question

**URL:** <https://forums.speedlife.net/t/ecu-fuel-question/140922>\
**Category:** Canada Nissan Automotive\
**Created:** [December 20, 2005, 3:53pm UTC](https://forums.speedlife.net/t/ecu-fuel-question/140922 "2005-12-20T15:53:52Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![silvers13](https://avatars.discourse-cdn.com/v4/letter/s/47e85d/32.png) [@silvers13](https://forums.speedlife.net/u/silvers13)\
**Post date:** [December 20, 2005, 3:53pm UTC](https://forums.speedlife.net/t/ecu-fuel-question/140922/1 "2005-12-20T15:53:52Z")

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since ur ecu should b tuned when addding bigger injectors does this mean it also has to be tuned if switching from a ka fuel pump to a walbro?

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**Author:** ![1mns13](https://avatars.discourse-cdn.com/v4/letter/1/8491ac/32.png) [@1mns13](https://forums.speedlife.net/u/1mns13)\
**Post date:** [December 20, 2005, 4:17pm UTC](https://forums.speedlife.net/t/ecu-fuel-question/140922/2 "2005-12-20T16:17:30Z")

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> [@silvers13](#):
>
> since ur ecu should b tuned when addding bigger injectors does this mean it also has to be tuned if switching from a ka fuel pump to a walbro?

Not necessarily, but Scott Avoy(Enthalpy) tunes differently for the walbro 255 pump anyhow. And he is right on the money with ecu tuning…

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**Author:** ![rocafella](https://avatars.discourse-cdn.com/v4/letter/r/bcef8e/32.png) [@rocafella](https://forums.speedlife.net/u/rocafella)\
**Post date:** [December 27, 2005, 10:31pm UTC](https://forums.speedlife.net/t/ecu-fuel-question/140922/3 "2005-12-27T22:31:23Z")

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sucks that enthalpy doesn’t do CA18’s though… anyone know a place that can do it for a CA18? I was also looking to Horsham Development chips from the UK