ECU reflash

[He Man]

AFAIK, running a PC3 on top of the stock ECU is possible, but they just zero out the map in the closed loop portion. I also understand that they don't have support for the stepper motor (fast idle) so you may end up needing to disable that somehow. I still don't see how shops are doing a PC3 on the 1000DS motors without an ECU flash to get rid of the closed loop.

I thought you can just remove the O2 sensor. The ECU will be forced to run in open loop.  On some bikes the check engine light gets triggered. On my bike it doesnt. I did a few thousand miles without the O2 sensor, much less power so i reinstalled it.

as for the stepper motor, i thought the same thing. My Rapid Bike 3 gave me the same problem. It disables the stepper motor and i couldnt start in the winter.

[yotogi]

I thought you can just remove the O2 sensor. The ECU will be forced to run in open loop.  On some bikes the check engine light gets triggered. On my bike it doesnt. I did a few thousand miles without the O2 sensor, much less power so i reinstalled it.

Yeah, I don't think that it runs in Open-Loop, but instead in some kind of limp-ish mode. My bike had the O2 unplugged when I bought it. Plugged it in as soon as I realized it (coupele of months). Completely different (better) bike with it plugged in. Reading Brad Black's pages I remember seeing something about the strangeness of the ECU when the O2 sensor is unplugged, hence the FatDuc and the desire to get a DP or DP flashed ECU.

[♣ McKraut ♣]

pulled my stock ecu yesterday and shipped it out to desmo-porche.  going to have them load up the DP map, turn off the imobilizer, and increase the redline (not that i really have a big need for that).  hopefully that helps take care of my lean running condition... and hopefully so much so that i'll be able to cut the airbox lid and put on a DP or KN filter.  they said 1-3 day turnaround time, so hope to have it back next week some time, and i can bum the VDST software from a friend and attempt to reset the TPS.  is the reset pretty straightforward for my bike?  it's an 05 S4R...

[♣ McKraut ♣]

very fast turnaround time at desmo-porche; bobby told me it should be shipping back today.

now to figure out how TPS resets work for my bike...

[vossy]

Keep us posted!

I'm looking forward to getting my ECU from Bobby too. (has to be shipped to Australia)
I'll see how it runs out of the box, but probably do a TPS reset also (S2R1000)

good luck with it McKraut.

[KrakHor9]

If I am going from slip-ons to a full boomtubes system on my 03 620ie... (i have an open airbox)  Do I need to reflash or is there a cheaper way??

[vossy]

I'd wait and see how it runs first before doing a reflash.
But yes, a reflash is the cheapest option that i'm aware of.

[CDawg]

Keep us posted!...good luck with it McKraut.

+1  Particularly, please let know know if the cold start is smooth or if it idles high/rough

[♣ McKraut ♣]

well...it's still in transit apparently; the wait is killing me!  oddly though i just checked the tracking status on USPS, and it's showing that it's in freaking NY??  wtf??  i shipped it to a houston address and it's shipping through NY??  this seems really weird to me...is this just a weird screwup by USPS?  i was hoping to have it back today, as someone organized a wrenching session tomorrow, but looks like i'll not be able to attend after all.

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[vossy]

Received my reflashed ECU the other day. I just have to find time now to fit it and do the usual resets etc.
will let you know how it goes.

hope yours shows up very soon Mckraut

[CDawg]

Received my reflashed ECU the other day. I just have to find time now to fit it and do the usual resets etc.
will let you know how it goes.

+1  Please let us know how it is, particularly with cold starts as some have reported slight hesitations during the winter.  Thanks!

[♣ McKraut ♣]

received mine the other day, took it for a little ride up the tollway last night.  seems to have seriously helped with any popping that was occurring before (it sounded like i was making popcorn on decel pre-flash...even with a closed airbox lid; this was my main reason for the flashing), and it seems like it's also accelerating stronger now.  starting seems same as before.  i'm probably a bad person to ask about that, as i was actually still trying to troubleshoot some starting issues prior to this flashing.  the first time i started the bike post-flash, it took a couple tries to start it, but then fired up and ran well.  last night, it was the fourth try i think before it finally fired up.  so, not sure what the problem is there.  it's worth noting though that i have not yet reset the TPS, which i hope to do in the next few days...maybe i'll have some better news to post then.

i noticed that the LED on the gauge cluster still blinks when i kill it, but bobby verified that the immobilizer had been killed.  i guess the LED isn't so much a function of the immobilizer being "armed" as it is just a 24 hour countdown timer, and just blinks no matter what...

[CDawg]

i noticed that the LED on the gauge cluster still blinks when i kill it, but bobby verified that the immobilizer had been killed.  i guess the LED isn't so much a function of the immobilizer being "armed" as it is just a 24 hour countdown timer, and just blinks no matter what...

I believe that's so you still get the theft deterrent benefit of it.

[jwoconnor]

To double-check you can unplug the dash and still start the bike.

[silversled]

Another  for Desmo Porsche ECU flash service. 

I sent my ECU for my 07 S2R1K project bike last Saturday, they flashed the ECU and invoiced me on Monday.  I received it yesterday.  Total door-to-door turnaround time from Florida to Texas was 6 days!  Thanks Bobby.

BTW: flash was for the DP program with O2 sensor and immobilizer delete.