Performance ECU vs Stock -
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post #1 of 3 (permalink) Old 03-26-2010, 02:27 PM Thread Starter
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Performance ECU vs Stock

I recently acquired an F4 which came with a full Arrow exhaust and "performance" ECU. When I took possession, the exhaust and p-ECU were removed and the original parts were reinstalled. Unknown to me, turns out the p-ECU is still in the bike and I have the original ECU (in other words, I possess both). The dealer told me there was no difference between the p-ECU and stock ECU. Is this true? Also, how can I tell the difference between a "performance" ECU and stock? As a corollary, the bike runs fantastic.

Last edited by LiquidWhy; 03-26-2010 at 02:28 PM. Reason: add info
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post #2 of 3 (permalink) Old 03-26-2010, 08:16 PM
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in my opinion a performance ecu should have a diferent information to send more petrol and you should be able to ear the bike working in neutral with higher revs, if you have a racing exhaut you should be able to take advantage of that otherwise i think the bike is spending more petrol without improving performance
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post #3 of 3 (permalink) Old 03-30-2010, 03:26 PM Thread Starter
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My mistake....
Turns out the 'performance' EPROM was removed from the motorcycle. How does one know if it is a performance part or not? At this point, I don't need it and would be more than happy to sell it to someone who may.

The part box has the following info:

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