[TheWooginator]

So here's the rundown of everything I've just done to the bike:
PCV
Single channel autotune
MWR two piece filters
New NGK plugs
New timing belts
Checked and adjusted all valve shims
A&R baffled Evo cans
Removed charcoal canister
Bled brakes & clutch
Adjusted shift drum selector lever
DP ECU
Removed exhaust servo & cables

Before I had done any of this, I was beginning to have stalling issues when the bike was hot at idle. I figured doing the regular maintenance would help alleviate this issue, but it didn't. Installed the DP ecu before I put the PCV system on and the stalling at idle got worse, plus I had a noticeable stumble from 0-5% throttle opening. Bike was surging badly with any type of maintenance throttle.

Let me preface all of this by noting that I haven't reset TPS yet. I was sold on this being the root cause until I started tinkering. Now I'm not so sure.

Installed PCV with autotune and looked at the live data with the bike at idle. It was running extremely rich with a zero map, in the 10.5-11 range. I went into the fuel tables and leaned everything out from 0-5% throttle and 750-2500 rpm. The stalling at idle disappeared, made the bike MUCH smoother and actually ride-able. Was reading 13.5-14 for AFR and about 3% duty cycle for the injectors at idle.

I'm still tinkering with how to setup the autotune however. You input target AFR's into the fuel table and the autotune trims to meet them. There aren't any targets however in the throttle opening range at any rpm. This is where I'm still having some stumbling/surging issues. Does anyone have a decent mapping setup or autotune AFR targets for the 848 with a DP Ecu? I'm very close to having the bike setup nicely, but I really want to smooth things out.

[Mik3ymomo]

Idle is typically lean and so is a lot of the part throttle cells. Then it will need to get richer as it goes towards torque peak. You really need a wide band 02 sensor to get an accurate A/F ratio though. I wouldn't depend on the stock 02 sensors for tuning but that's just me.

[TheWooginator]

I was hoping you'd chime in. Just read that you had done some similar tuning. The autotune comes with a wideband that you install in place of the stock sensor. I'm looking for similar driveability that you seem to have achieved.

The standard settings for AFR targets are 13.2 down low and up to 13 at full throttle/high rpm. What I'm hoping for is someone to have an AFR table/settings that show solid targets from 0-5%, because the standard maps from DJ don't have targets for this range. Experimenting and swinging a blind stick at it are working so far, but a range to shoot for would help move things along.

[chadm800]

Are you saying u did or did not reset the TPS.. I thought I had on my bike with a VDST but had a dealer reset it. Its like a new bike.

[Mik3ymomo]

You are going to want the 02 optimizer for the map cells below 5k rpm and less then 20% throttle. Unless you do a stand alone like a microtech etc. It may be possible to tune those cells with a software interface but the PCV is changing from open loop to
Closed loop at that threshold.
I honestly don't know enough about the autotune and whether it can reach those cells you need. I use the 02 optimizer for those cells down low.

I have alot of experience in tuning cars but this was my first bike that the tune was altered.

[TheWooginator]

I haven't reset the TPS yet. I don't have the VDST or all of the necessary wires for ducatidiag, so I've gotta hit the dealer on Friday to get it done.

I have the o2 optimizer and tried that first. It came with the PCV that I bought. Didn't work very well on top of the DP ecu. Since I'm running the DP ecu though, auto tune can adjust targets across the full range as the bike is running open loop all of the time with the exception of the trim adjustments the autotune lamda makes.

I've pretty much eliminated the stalling at idle by running in the 13.5-13.8 AFR range. The rest is still in progress. Track day this Sunday, so I should get some solid data.

[Mik3ymomo]

Originally Posted by TheWooginator

I haven't reset the TPS yet. I don't have the VDST or all of the necessary wires for ducatidiag, so I've gotta hit the dealer on Friday to get it done.

I have the o2 optimizer and tried that first. It came with the PCV that I bought. Didn't work very well on top of the DP ecu. Since I'm running the DP ecu though, auto tune can adjust targets across the full range as the bike is running open loop all of the time with the exception of the trim adjustments the autotune lamda makes.

I've pretty much eliminated the stalling at idle by running in the 13.5-13.8 AFR range. The rest is still in progress. Track day this Sunday, so I should get some solid data.

It sounds like you have your bases covered. Like the O2 optimizer, the auto tune is going to take some time before it hits all of the cells that are dependent on the feedback from the wide band. I think once you hit the road with it and apply different loads at different RPMs you will see continued improvement.

Also something my dealer mentioned to me. The barometric pressure sensor on the bikes that compensate for the changes in environmental conditions for the bikes tune work poorly.

I am sure they know what they are talking about but it is the first time I heard that. They mentioned that they don't like to tune anything below 70-75 degree ambient for best results.

I figure I might as well pass that little nugget along to you. The more info we share on here the better off we all are.

[TheWooginator]

Interesting tidbit. While I don't fully trust my local dealer anymore, what they are recommending makes sense. The autotune also has a nice little timer feature that lets you set a delay before it starts making trim adjustments so the bike can warm up first.

[TheWooginator]

Just an update for those curious:

Finally got everything sorted out this past weekend just before my first ever trackday at CMP yesterday

First off, the TPS was waaay off. I knew it had to be re-spanned from the get-go, but I had no idea the voltage differences could've been as great as they were. My buddy had a VDST for his 999, which worked for my bike and allowed us to reset everything including my service light. I was showing 8% throttle opening on the TPS with the throttle completely closed. No wonder I was having issues....

Once I did this, I went and set most of my AFR targets for the autotune to 13.3 and left the 0% throttle opening column alone. (I may still futz with this area for popping on decel and smoothing out the on/off throttle). AFR's in the high rpm range set to 13 and everything else feathered in between. No stalling at idle, smooth manageable power on maintenance throttle and it pulls pretty strong through the rev range. I mounted the PCV and autotune right next to each other on the front cylinder timing belt cover. I can access them easily this way and it saved me from running wires up to the tail. The charcoal canister mounting bracket made a nice spot to coil and tie off excess wiring.

When it was all said and done, tested the bike yesterday at CMP and it ran like a raped ape.

[mcknightp]

Sounds good. Imagine how much better with a dual channel Auto-tune!! Watched your clip. Loved it! Sometimes you blipped the throttle on down-shift and not on others? Hit the rev-limiter a bit too much on up-shift & a few times on down-shift....first ever,,, pretty damned good!