Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 999 / 749 > power commanders pc111

[bike mad]

why does the rear cylinder run hotter, it's not like the air cooled bikes, the cooling should be the same for both cylinders,
so has any one had there pc111 maps done for both cylinders, ?

[twpd]

Originally Posted by bike mad

why does the rear cylinder run hotter, it's not like the air cooled bikes, the cooling should be the same for both cylinders,
so has any one had there pc111 maps done for both cylinders, ?

Cos your bike is still air-cooled to some extent and relies on the passage of air through it from front to rear. The rear will run hotter cos it gets less flow of air across it and what it does get comes from the front pre-heated due to passing over the rad and the front pot.

You will find that the old 4valvers can be mapped individually on each pot with an FIM chip.

There's a pretty good Q&A thread about his in here recently from some bloke based up north...do a search and I'm sure you'll find it.

[jhsracing]

The advanced map mode is for the mapping of the individual cylinders which need to have lamba sencer fixings in each cylinder to be able to map and then the mapping is spot on for the relivant cylinders. Normal practice is to use the base map set up for road use.
hope this helps.
jh

[twpd]

James - have you ever measured any actual benefits to mapping invidiually? Or is it dimishing returns?

[bike mad]

yes thanks, sounds like you know what your talking about, I think that as the two cylinders are so far apart that it would be best to do them indvidualy, it's a gas thing,
as the pipes have the holes in and the ps111 can be done on each cylinder next is what dyno can measure two laberinth sensors, and the rest to go with it,?
thanks

[bike mad]

I asked the powersports technical support manager at dynojet and this is how it went,
me,
I have a Ducati 999S and want to know can the pc111 usb be programmed for each cylinder as appossed to both and doing an average.
I guess what I want to know is can it run two programmes, one for each cylinder?
Many thanks,

and his answer was

Absolutely. We actually feel that this is the only proper way to map a Ducati. If you have any other questions please let us know. Thanks.

so there we have it right from the horses mouth if you don't have each cylinder done on it's own then it's not been done how dynojet wanted.

now all I need is a dyno