California 1100 Reflash

[Sheepdog]

Do the stock catalytic converter-equipped mufflers clog up after completing a sensible reflash on an 1100 ECU? Mistrals and Lafranconis are a little loud; I'd like to retain the stockers...

[Kiwi Dave]

It should depend on what mufflers the map was designed for.  I doubt you will clog up the mufflers, just go for a spirited ride occasionally.

[guzzisteve]

I think the cat is in the xover, put a normal cross in. If you plan on putting the O2 back in get one w/a bung.

[lazlokovacs]

cat is in the mufflers on the calvin

[guzzisteve]

You could just get EV muffs then.

[Sheepdog]

I checked the price for the non-cat EV mufflers: over $850! Perhaps I'll just do the Mistrals with the "Db Killers" and save myself some bucks...

[guzzisteve]

You may find a set of used like new ones for much less.

[lazlokovacs]

hey sheepdog, if you do make the change to either mistrals or ev pipes please do report back, I've been thinking of doing something similar for a while now...

[Sheepdog]

hey sheepdog, if you do make the change to either mistrals or ev pipes please do report back, I've been thinking of doing something similar for a while now...

I will. Actually, this is going to be a 10 year anniversary refresh. The entire bike will be serviced by the fine folks at Adventure Motorsports in Pensacola...steerin g head bearings, wheel bearings, TPS check, valves, splines, fluids, new fork springs, etc. After that; Ikon shocks, Matris steering damper, and a re-flash. Heck, I might even contact Curtis about an Outsider. My bike looks pretty good, but the suspension is getting a bit flaccid and I've never been content with the fueling. I thought about a new bike, but I really love my Vintage so I thought I'd do all I can to make it last.

I tried Mistrals before (a used pair), but found them to be just a little too loud. However, the Db Killers might be the answer...

[lazlokovacs]

ha, well that makes two of us, my Calvin just celebrated its 10 year anniversary a couple of months back...

after years of futzing about with the fueling I ended up just putting a t3 tank on and a couple of carburettors, its just about the perfect bike for me now!

though my bike does look ratty to say the least!

[Ncdan]

ha, well that makes two of us, my Calvin just celebrated its 10 year anniversary a couple of months back...

after years of futzing about with the fueling I ended up just putting a t3 tank on and a couple of carburettors, its just about the perfect bike for me now!

though my bike does look ratty to say the least!

You have my interest with the carb thing you did. Is this a fairly simple change and can one simply replace the FI system with two new carbs. Second question, after the carbs , from that point is an one simply rejet to make the air fuel changes with no computer complications?  Sorry if my questions are laughable as I have very little knowledge of Guzzis. My 07 vintage is my second MG the other being a 04 EV. I have a total of around 3000 miles on both. I've very inexperienced:(

[lazlokovacs]

For me, it was as simple as swapping the tanks, removing the injector bodies and putting some carbs there. I kept the ECU for controlling spark, remapped it in Guzzidiag to have a flat curve peaking at around 30 degress full advance (mimicking and old distributor) and thats it!

yes, after you've removed the injectors all fueling is controlled by jetting and adjusting the carbs

one thing, the frame on the Calvin is slightly different to the old tonti frames, so the old tank doesnt fit as well, needs some inventiveness to get it right!

and you get a useful gap between your tank and the stock seat, perfect for holding a tool box or suchlike.

Seems crazy that I had to do this, but I spent literally years trying to re-map the FI to eliminate pinging and nothing worked! Carbs got dialled in in about a week, my mileage is better too.

[Ncdan]

For me, it was as simple as swapping the tanks, removing the injector bodies and putting some carbs there. I kept the ECU for controlling spark, remapped it in Guzzidiag to have a flat curve peaking at around 30 degress full advance (mimicking and old distributor) and thats it!

yes, after you've removed the injectors all fueling is controlled by jetting and adjusting the carbs

one thing, the frame on the Calvin is slightly different to the old tonti frames, so the old tank doesnt fit as well, needs some inventiveness to get it right!

and you get a useful gap between your tank and the stock seat, perfect for holding a tool box or suchlike.

Seems crazy that I had to do this, but I spent literally years trying to re-map the FI to eliminate pinging and nothing worked! Carbs got dialled in in about a week, my mileage is better too.

Thanks, great info! I'm going to save this post for future reference as my calvin will probably e my last bike.

[fotoguzzi]

Seems crazy that I had to do this, but I spent literally years trying to re-map the FI to eliminate pinging and nothing worked! Carbs got dialled in in about a week, my mileage is better too.

some Vintages well know for poor fueling and the solution for some was to change out the ECU for one from a V11 Sport/Lemans.
I have a friend that got the whole bike (Vintage) replaced under the lemon law because he took it to the dealer so many times for the same issue.
OP, since you have both Vin and EV maybe you could swap the EV ECU into the Vintage for a test?

[Kiwi Dave]

some Vintages well know for poor fueling and the solution for some was to change out the ECU for one from a V11 Sport/Lemans.

Isn't there an issue with ignition timing as the Vintage is twin-plugged and the V11 Lemans single spark plug?

[antmanbee]

some Vintages well know for poor fueling and the solution for some was to change out the ECU for one from a V11 Sport/Lemans.
I have a friend that got the whole bike (Vintage) replaced under the lemon law because he took it to the dealer so many times for the same issue.
OP, since you have both Vin and EV maybe you could swap the EV ECU into the Vintage for a test?

I run a modified V1 sport map on my calvin and it is much better than the stock for lower rpm drive-ability.