# auto ecu

**URL:** <https://forums.speedlife.net/t/auto-ecu/89594>\
**Category:** SON240sx Automotive\
**Created:** [October 20, 2005, 2:12pm UTC](https://forums.speedlife.net/t/auto-ecu/89594 "2005-10-20T14:12:11Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![jrae2424](https://avatars.discourse-cdn.com/v4/letter/j/50afbb/32.png) [@jrae2424](https://forums.speedlife.net/u/jrae2424)\
**Post date:** [October 20, 2005, 2:12pm UTC](https://forums.speedlife.net/t/auto-ecu/89594/1 "2005-10-20T14:12:11Z")

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why is a auto ecu an upgrade for the 5sp thanks

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**Author:** ![AnDrEw](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@AnDrEw](https://forums.speedlife.net/u/AnDrEw)\
**Post date:** [October 20, 2005, 2:21pm UTC](https://forums.speedlife.net/t/auto-ecu/89594/2 "2005-10-20T14:21:09Z")

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it isn’t…only thing it doesn’t have is a rev limiter. I would recommend keeping your manual ecu for the limiter.

Andrew.

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**Author:** ![Hurricane](https://avatars.discourse-cdn.com/v4/letter/h/e9bcb4/32.png) [@Hurricane](https://forums.speedlife.net/u/Hurricane)\
**Post date:** [October 20, 2005, 4:23pm UTC](https://forums.speedlife.net/t/auto-ecu/89594/3 "2005-10-20T16:23:36Z")

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the auto ecu has different fuel maps slightly… and it doesn’t remove the limiter it just raises it 200 rpm.

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**Author:** ![AnDrEw](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@AnDrEw](https://forums.speedlife.net/u/AnDrEw)\
**Post date:** [October 20, 2005, 4:32pm UTC](https://forums.speedlife.net/t/auto-ecu/89594/4 "2005-10-20T16:32:21Z")

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> [@Hurricane](#):
>
> the auto ecu has different fuel maps slightly… and it doesn’t remove the limiter it just raises it 200 rpm.

I’m running my car on auto ecu right now sine i can’t find my manual one. It revs to over 7500 which I’ve found out many times while beating on it and i’ve noticed no difference in performace using the auto ecu.

Where is the basis of different fuel maps from? I’m in no means attacking, just curious. Have you been diping into the EProm stuff?

Andrew.

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**Author:** ![Hurricane](https://avatars.discourse-cdn.com/v4/letter/h/e9bcb4/32.png) [@Hurricane](https://forums.speedlife.net/u/Hurricane)\
**Post date:** [October 21, 2005, 3:01pm UTC](https://forums.speedlife.net/t/auto-ecu/89594/5 "2005-10-21T15:01:13Z")

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Just what I have been told from some 240 guys I deal with down in the states.