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Swapping Ecu's......

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    Starting My Mini Up

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Posted 10 February 2019 - 12:48 PM

Would there be any performance gains on swapping my Sprite ECU with a Cooper ECU?

#2 viz139


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Posted 11 February 2019 - 11:00 AM

The other difference in the two is the the Cooper has a different cam. I was wondering if a SW5-i cam with the Cooper ECU would make much difference?

#3 Wiggy


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Posted 11 February 2019 - 12:02 PM

The compression ratio was lower for the Sprite too.

I don't know if you'd get any benefit by just changing the ECU and nothing else.

#4 neal


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Posted 19 February 2019 - 08:35 PM

For straight forward bolt-on mods for an SPI without removing the engine, If you go for a modified cylinder head with same compression ratio as a Cooper, 1.5 roller rockers, K&N air filter and a good quality LCB manifold with a 1.75" RC40 (or similar)exhaust system you should notice quite a difference.

If you then fit the Cooper ECU this will accommodate more for the fueling and ignition for the above mods than your current ECU.

By fitting a Cooper ECU on its own without the above mods, I don't think you'll get a great deal from it

Edited by neal, 19 February 2019 - 08:37 PM.

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