1100 Sport cold start/ idle

[docc]

Looking to create a new topic for new member @AdamCB . . .

About Me

I own a Sport 1100 and have an updated Cliff Jefferies computer 

https://www.myecu.biz/MyECU/index.htm

I am trying to get the cold start and idle perfect and seeking a mentor who has experience with the MyECU product created by Cliff Jefferies to guide me.

I would certainly appreciate assistance. thank you 

 

[Lucky Phil]

20 minutes ago, docc said:

Looking to create a new topic for new member @AdamCB . . .

About Me

I own a Sport 1100 and have an updated Cliff Jefferies computer 

https://www.myecu.biz/MyECU/index.htm

I am trying to get the cold start and idle perfect and seeking a mentor who has experience with the MyECU product created by Cliff Jefferies to guide me.

I would certainly appreciate assistance. thank you 

 

I have a 15M Myecu sitting in the workshop thats never been used as they became redundant when Guzidiag was released. Do yourself a favour and install the original ecu if it used the 15M which the later bikes did I think and just tune it with Guzzidiag or load some other peoples maps. 

Phil

[docc]

Isn't the Sport 1100 ECU "pre-15M?"

 

[Pressureangle]

mmm. Garage is destroyed so I can't lay my hands on my spare ECU. iirc I had to get the MyECU because the stock unit isn't tunable, or perhaps GD wasn't invented yet...
I have a lot of time in mine, probably less trouble to PM than to make a long thread. 

[Lucky Phil]

2 hours ago, docc said:

Isn't the Sport 1100 ECU "pre-15M?"

I was hoping @AdamCB would post here and I could take my posts down and change the topic title . . .

I think later ones were 15M but no entirely sure.

Phil

[AdamCB]

I purchased the bike with My ECU installed. Cliff has updated it and it runs great except for the cold start and idle.

I am looking for someone with experience with the MyECU.

Adam CB

[pete roper]

All the Sports came with the 16M. Horrible thing, you’re well rid of it.

[docc]

8 hours ago, AdamCB said:

I purchased the bike with My ECU installed. Cliff has updated it and it runs great except for the cold start and idle.

I am looking for someone with experience with the MyECU.

Adam CB

I wonder how much it would benefit from fresh spark plugs, valve adjustment, and throttle body balance . . .

What is the TPS setting procedure on this system?

[HRC_V4]

That was one complaint I had with my greenie, cold starts.  On her last day (rest in peace), I killed the battery trying to start her, sort of like she knew...  I had someone send me a new bin file for it, which ran great, but had the same cold start issue, which makes me think it could be something other than an ECU problem.

[Pressureangle]

10 hours ago, AdamCB said:

I purchased the bike with My ECU installed. Cliff has updated it and it runs great except for the cold start and idle.

I am looking for someone with experience with the MyECU.

Adam CB

PM me. 

___________

Docc- 'What is the TPS setting procedure on this system?'
The MyECU is set up the same as always, set your TPS to ~157(?)mv. HOWEVER you can, and should, verify that the system is also set to the same value- the system can use any TPS value as a baseline. 

[Lucky Phil]

7 hours ago, HRC_V4 said:

That was one complaint I had with my greenie, cold starts.  On her last day (rest in peace), I killed the battery trying to start her, sort of like she knew...  I had someone send me a new bin file for it, which ran great, but had the same cold start issue, which makes me think it could be something other than an ECU problem.

When I developed the map for my Daytona engined bike one of the hardest parts was the cold start schedule. Because the Daytona heads are much larger and a bigger heat sink among other things the engine temp break points needed to be modified to make sure the engine temp trim didn't taper off too quickly. The start enrichment and start trim also needed a fair bit of work as well. It starts and runs well now from cold but there is a definite routine that needs to be followed or it will get sulky and protest. 

High idle lever to full ON with zero throttle input.

Crank the engine and it will fire up within about 2 or 3 revolutions

The engine then goes to around 1800rpm and you need to leave it there for around 10 seconds and then you can gradually back off the high idle lever to around 1/4 during the next minute or so. After that you can use the throttle and ride the bike. After a few klms you can close the fast idle lever.

The original V11 was a bit less fussy but not by a whole lot, same with my Ducati twins of the last 20 years or so. All big V twins are a bit fussy about starting esp if they have big cams like the Ducatis. The other issue with Guzzi engines is fuel puddling in the intake manifolds when they are cold. Thats what causes the odd repetitive cough they can get while idling cold sometimes.

 

Edited Wednesday at 10:54 PM by Lucky Phil

[Pressureangle]

16 hours ago, Lucky Phil said:

When I developed the map for my Daytona engined bike one of the hardest parts was the cold start schedule. Because the Daytona heads are much larger and a bigger heat sink among other things the engine temp break points needed to be modified to make sure the engine temp trim didn't taper off too quickly. The start enrichment and start trim also needed a fair bit of work as well. It starts and runs well now from cold but there is a definite routine that needs to be followed or it will get sulky and protest. 

High idle lever to full ON with zero throttle input.

Crank the engine and it will fire up within about 2 or 3 revolutions

The engine then goes to around 1800rpm and you need to leave it there for around 10 seconds and then you can gradually back off the high idle lever to around 1/4 during the next minute or so. After that you can use the throttle and ride the bike. After a few klms you can close the fast idle lever.

The original V11 was a bit less fussy but not by a whole lot, same with my Ducati twins of the last 20 years or so. All big V twins are a bit fussy about starting esp if they have big cams like the Ducatis. The other issue with Guzzi engines is fuel puddling in the intake manifolds when they are cold. Thats what causes the odd repetitive cough they can get while idling cold sometimes.

 

This is the Way.

[docc]

On 8/6/2025 at 12:02 AM, AdamCB said:

I purchased the bike with My ECU installed. Cliff has updated it and it runs great except for the cold start and idle.

I am looking for someone with experience with the MyECU.

Adam CB

Once all the tuning is performed and the start-up procedure perfected, O am hopeful the issues are addressed.

I reckon if we are looking for a member with myECU experience, that would be @Cliff 

[AdamCB]

Thank you for your replies. I will as advised find a way to get to get Cliff. I have his details. Usually his replies are are informative but they assume a lot of confidence with his app which I do not have.

Never-the-less, I will push on.  Thanks everyone

 

AdamCB

[Weegie]

I have a Magni Sfida 1100, essentially a Sporti running the legacy version of MyECU.

The installation and map was made by the previous owner of the bike and I haven't messed with it, I've never felt the need.

About the only thing I've did is reset the TPS a few times.

I'm not fussed on the finer points of how the engine runs, it accelerates pretty well and has more than enough power for my needs

Probably a bit on the rich side, it has K&N pods, again it came to me this way.

Mine can on ocassion, be a little reluctant to fire up cold, but not to the point I feel the need to mess with it.

Just saying you're not alone with this setup