Modern Vespa

Since I've still got my on going idle problems, I am considering replacing the ECU/throttle body.

I found a 2nd hand one (still checking the part number) that's a bit less than half the cost of a new one and it wont take months to arrive. it's low mileage and missing the brown key (hence yesterdays question about blue key cloning).

But ... I've seen posts like this one by Stromrider saying that a new ecu is in learning mode for the first few hundred miles then stops learning ... does it really stop? or does it still learn but maybe slower changes or something?

since iawdiag doesn't yet support hpe I wouldn't be able to reset it so it starts learning again (assuming that pads could do this but I'm avoiding my mechanic).

yes I've also heard the "internet knowledge" that disconnecting the battery will reset this but I have always been very suspect of the truth of this. why? as then every time the battery goes flat or somebody disconnects the battery for winter storage or something like that, then it would reset. I really really doubt Marelli* designed their ecu like that. (but maybe true for early generation ecus?)

ref: https://modernvespa.com/forum/post2432568#2432568

* for those that are unaware, as with many parts on the vespa, piaggio does not design or make the ecu/throttle body

Just a quick note... At one time, I did purchase as second hand ECU/throttle body for my previous 2015 GTS300. I installed it, but could not get it to work. I recommend having a local knowledgeable Vespa person and/or dealer replace the ECU/throttle body. Incredibly, I found such as person close to me (in New Britain, Connecticut, USA, of all places), and he personally replaced my ECU/throttle body with one he had. Unfortunately, he doesn't do cylinder head gaskets or my Vespa would be with him right now.

I've replaced he ECU twice on my 2015 GTS300. No problems, but the most difficult part is connecting up and adjusting the throttle cables. As far as I know you must have the master brown key to program it.

but new or 2nd hand? installing a new is not scary to me

Can't answer, I don't know how many times an ECU can be programmed to a different key. I had assumed only once, but I may be wrong.

You're misunderstanding me. I'm not talking about programming the ecu to match the key. I'm talking about the ecu 'adapting' to the bike.