Equalizing air to fuel - MINI Cooper Forum

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post #1 of 2 (permalink) Old Jul 15th, 2014, 08:50 PM Thread Starter
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Equalizing air to fuel

I just put on a cai and I am putting on a 17% pulley. Do I need to equalize my air to fuel ratio?

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post #2 of 2 (permalink) Old Jul 15th, 2014, 10:12 PM
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Hi ya

do a ECM reset, disconnect the battery neg then poss leave it for 30 min then poss and then neg to reconnect.
This will reset the ECM and start it learning, it will adapt to the new mods

If you have a reduced sc pulley remember to change the heat range on your spark plugs you will need to go up a heat range to a 7 or 8.
once you have fitted new ones alway check them after a few heat cycles and every so often they do come loose.
I would also advise you to change the intercooler if you have not all ready,or in hot weather you may trash your engine.

It's always worth getting it on a dyno to check the air fuel ratio to be 100% safe


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