Ducati.ms - The Ultimate Ducati Forum banner
  • Hey Everyone! Enter your bike HERE to be a part of this months Bike of the Month Challenge!

1 - 8 of 8 Posts

·
Registered
Joined
·
202 Posts
Discussion Starter · #1 ·
i have a half system filters/front pipe/dp ecu. 2005 999
is 13.35 a good ratio?

Also, on the dp ecu's i know there was a option where you pick if it's a 749/999. Is there other options like base, S and R? how about if it's a full or half system option?

how do you geto to these options?
 

·
Registered
Joined
·
3,977 Posts
the ecu is specific to a model. you need to buy the right one to suit the model you have.

i'd go a bit richer than 13.35 at higher throttle openings, leaner at lower openings.
 

·
Premium Member
Joined
·
274 Posts
the ecu is specific to a model. you need to buy the right one to suit the model you have.

i'd go a bit richer than 13.35 at higher throttle openings, leaner at lower openings.
Ah tunning, an area that I know about.
13.35 is a conservative STOICH mix ( about where it needs to be ) 999 in 05 and 06 tend to run a tad leaner and even more so when you add a slip on and Air filter.
I like to tune for longevity somewhere around 13.80 to 13.50
Is 13.35 all over the board or just at WOT?
 

·
Registered
Joined
·
746 Posts
Ah tunning, an area that I know about.
13.35 is a conservative STOICH mix ( about where it needs to be ) 999 in 05 and 06 tend to run a tad leaner and even more so when you add a slip on and Air filter.
I like to tune for longevity somewhere around 13.80 to 13.50
Is 13.35 all over the board or just at WOT?
Pretty sure Brad knows a bit about tuning...

Tune for Longevity????
:confused::confused::confused:
 

·
Registered
Joined
·
202 Posts
Discussion Starter · #5 · (Edited)
I have dyno sheet but it doesn't show the a/f on the graph. it just says 13.35. What can you gather from this?

this was a dyno tune done by ducati, how do tune the factory dp ecu a/f ratio?

my performance ecu came with the half system, so i'm guessing it's the right one. I know there's an option where you select what model xx9 you have, can someone tell me where that is?
 

·
Registered
Joined
·
3,642 Posts
Ah tunning, an area that I know about.
13.35 is a conservative STOICH mix ( about where it needs to be )
There is nothing "conservative" about a stoichiometric ratio. "Stoichiometric" refers to the ratio at which, during combustion, the chemical reaction is balanced... yeilding only H2O and CO2. That ratio is approximately 14.7 parts air to 1 part fuel, by weight.
 

·
Premium Member
Joined
·
274 Posts
Pretty sure Brad knows a bit about tuning...

Tune for Longevity????
:confused::confused::confused:

Yes tune for longevity,
I set them up to run a tad on the richer side for a longer lasting fun ride as opposed to run them a little leaner maybe get one more hp out of it.
My gsxr slapped 200 hp but she is a 191hp bike.
Id rather use the xtra fun longer than the competition.
 

·
Premium Member
Joined
·
274 Posts
I have dyno sheet but it doesn't show the a/f on the graph. it just says 13.35. What can you gather from this?

this was a dyno tune done by ducati, how do tune the factory dp ecu a/f ratio?

my performance ecu came with the half system, so i'm guessing it's the right one. I know there's an option where you select what model xx9 you have, can someone tell me where that is?

If you want to try playing around with the 749/999 option, here is how you do it. found on page 16 of your owners manual.

Setting special function (vehicle model and units of
measurement)
The engine control unit transmits the correct vehicle
model and unit measurement information automatically
for the instrument panel to display. To force a change of
these parameters, turn the key from OFF to ON while
holding down both buttons (1) and (2). The two buttons on your gage cluster.
Press the button (1) to scroll through available
configurations.
To store your selection, hold down the button (2) for 5
seconds, until the display will read OFF. Set the key to
OFF.
Note
The dotted boxes in the figure are the display areas
for vehicle version (normal, R or S).
 
1 - 8 of 8 Posts
Top