PC5 readout errata with 796 - Ducati.ms

spindrift · Sep 12th, 2011, 6:05 pm

Yo, I know some of y'all have this same setup, maybe you can help!

I installed the PC5 and 'O2 Optimizer'. I successfully connected the PC5 to my laptop and PC5 software, was able to update the PC5 firmware, and uploaded a 'custom' map. (I used one of the provided maps for 'stock exhaust and stock air filter') I actually created my own map based on the 'stock' map, by plugging in a value of '10' into the 'closed loop' area (<= 5250rpm, and <=20% throttle), as the documentation says to do. The O2 optimizers 'work with' the PC5 to keep the AFR to 13.6 in the closed loop area', etc...

When the bike is running, RPMs are showing up correctly, but the 'throttle' value always shows '100' and the AFR value always shows 0. (I assume the AFR should show 13.6 when it's running under 5250 rpm) I tried the PC5 'TPS' reset a few times. Didn't help. Looked at the PC5's TPS connector, seems fine, etc...

Thoughts?

Rob

Seven9Six · Sep 12th, 2011, 6:11 pm

Quote:

Originally Posted by spindrift

Yo, I know some of y'all have this same setup, maybe you can help!

I installed the PC5 and 'O2 Optimizer'. I successfully connected the PC5 to my laptop and PC5 software, was able to update the PC5 firmware, and uploaded a 'custom' map. (I used one of the provided maps for 'stock exhaust and stock air filter') I actually created my own map based on the 'stock' map, by plugging in a value of '10' into the 'closed loop' area (<= 5250rpm, and <=20% throttle), as the documentation says to do. The O2 optimizers 'work with' the PC5 to keep the AFR to 13.6 in the closed loop area', etc...

When the bike is running, RPMs are showing up correctly, but the 'throttle' value always shows '100' and the AFR value always shows 0. (I assume the AFR should show 13.6 when it's running under 5250 rpm) I tried the PC5 'TPS' reset a few times. Didn't help. Looked at the PC5's TPS connector, seems fine, etc...

Thoughts?

Rob

I don't think it matters if you put in 1000 in the closed loop area. The only thing that controls that is the the optimizer box...and THAT keeps the a/f CONSTANT at 13.2 unless you change the switches INSIDE the box.

How can you show an A/F ratio when you don't have a sniffer hooked up to the bike? A/F is only going to show on the laptop when the bike is connected on a dyno with a sniffer in the header.

Where did you read about that "10" value?

spindrift · Sep 12th, 2011, 6:26 pm

ah, I see (I was assuming that the PC5 would read AFR values somehow, but yeah, now that I think about it, how could an injector 'one-way signal' provide that info? Duh, should have used my head)

But yeah, the installation docs for the PC5, for the 796, say to 'make sure you enter a value of 10 in all the highlighted boxes in the 'closed-loop area' Maybe values in that closed loop area do mean something, because one of the custom maps that came with the PC5 was 'MIVV / Pod filters' which I think El Tardo gave to dynoyet (after doing the same setup and getting his bike dynoed), and it shows a value of 8 in all those closed-loop boxes in the table. ??

Separately, should the 'throttle' % still be showing up correctly in the PC5 software when the bike is running, or will that only show up on a dyno?

There is one final thing (for now) that is my biggest concern, which I forgot to mention. If I open the throttle while in neutral and keep the throttle position perfectly steady, the engine will periodically rev a noticeable bit higher for a few seconds, and then down again to the 'steady' state. That is really disconcerting because if that happens 'too severely' while I'm riding, especially at lower speeds, it seems like it could be dangerous. Then again, I never ran such a test before installing the PC5, and maybe the slight jump in engine speed isn't that big a deal. But still, shouldn't one expect constant rpms with a very steady throttle position while the bike is in Neutral?

Rob

spindrift · Sep 13th, 2011, 12:09 pm

posting a followup in case anybody is curious. My surging revs sounds like it's because I need a TPS reset as a result of the PC5 install. (And recalibrating the TPS values in the PC5 software is NOT the same as an ECU-TPS reset. It's just a way to let the PC5 software know what's min/max values for subsequent dyno tuning, etc..)

So I guess I heed to hit the shop and get TPS reset....

DynojetResearch · Sep 13th, 2011, 12:48 pm

Hooking up the PCV will not require you to do a ECU TPS reset at the dealership. The PCV does need to show correct reading while the bike is idling. If your software reads 100% all the time my guess is that you connected to 5v wire instead of the variable voltage line.

Fin_Duc · Sep 13th, 2011, 1:20 pm

And the 796 has a Siemens ECU, so it resets the TPS every time you start the engine.

spindrift · Sep 13th, 2011, 2:24 pm

well s&*t on a shingle, I stand corrected. Thx!

I was able to get the throttle % value in the PC5 to show up correctly, by 'manually' recalibrating the PC5 TPS values. First, I confirmed that I was tapped into the TPS wire correctly (the orange one...I ended up just spicing the wire from the PC5 into it, just to make sure)

Yep, getting readouts WHILE the bike is running. But never got any voltages in the TPS dialog while the bike was off (even with ignition turned, etc..)

So my trick was to hit the starter and notice the 'minimum' voltage (for 0% throttle) that would pop up in the TPS dialog. I took the average of a few trys and manually entered that. Then I pegged the throttle to maximum while in Neutral (uh, don't do this in a garage w/o earplugs :-) ) and noticed the max voltage, and entered that in the dialog. Viole.

BTW, after my first ride with the PC5, noticing massive difference with <4k rpm fueling. Smooth, no surging or dead spot coming out of 1st, and much less popping on decel.

Seven9Six · Sep 13th, 2011, 3:34 pm

Quote:

Originally Posted by DynojetResearch

Hooking up the PCV will not require you to do a ECU TPS reset at the dealership. The PCV does need to show correct reading while the bike is idling. If your software reads 100% all the time my guess is that you connected to 5v wire instead of the variable voltage line.

I'm also curious why a value of "10" should be entered in the closed loop boxes. I know that ELTARDO'S MAP that Dusty made has a value of 8 in all the boxes and i wondered about that too. Can you explain?

PS...sure wish i had a Mivv slip on map with stock filter from Dynojet. Would have saved me $300.00. I tried the Dynojet map for the Leo Vinci undertail slip on...stock air filter...{for my Mivv slip on} and according to the dyno was really rich throughout the range. Strangely the DucShop map that they made for me shows LEAN all the way accross and surpisingly runs near perfect. Feels a hair lean at my 900ft home...but when i hit the Mountains at 4,000 feet...it feels nearly perfect...and that's where i ride 90% of the time.

DynojetResearch · Sep 13th, 2011, 3:39 pm

I like to see values of 8-10 in this area. It is for several reasons but none that I want to get indepth with on a public forum. Hope you understand.

spindrift · Sep 13th, 2011, 5:17 pm

I bet the Dynojet legal dept likes to see those values in there too. Heh...

Quote:

Originally Posted by DynojetResearch

I like to see values of 8-10 in this area. It is for several reasons but none that I want to get indepth with on a public forum. Hope you understand.