ECU / Power commander question.

[Italiatwin]

Hi all

I'm looking at a bike that has Termis, air box mod and upgrade ecu.
I know there is some debate about race ecu vs power commander.
My question is.......
If the bike feels as though the running could be improved from the current set up can you use a PC with the race ecu or would you have to fit a standard ecu to use the PC ?
Any ideas or experiences would be appreciated.

Cheers.

[Italiatwin]

Sorry, forgot to say, the bike is a 2009 1100.

[Darren69]

It shouldn't matter, at least on the older bikes it should work with either but it would need to be re-programmed to work with a standard ecu. I'm running a DP ECU with a custom PCIII map on top (bike has a full Termi and open airbox). There are still improvements that can be made to the DP set up at least on the S4/S4R and I imagine the later ones too since they are all set deliberately lean at the point where emission's are tested,

[SteveM900]

Unless you get the ECU reflashed by a specialist or buy a Rexxer and do it yourself ,it will run rough at town speed regardless if it has a DP ECU and/or a PCV.
Been down this route with my 1100S.
Bought a Rexxer, tell them what you want i.e O2 disabled, exhaust flap disabled , cans and filter you have and download the map they send you.
Then it will be rideable and smooth at town speeds and everywhere else.

[mutley]

hello italiatwin
Rexxer a good way to improve the bikes like stevem900 says I've done a few 1100evo.s makes them a joy
to ride through towns etc

[Italiatwin]

So would it be fair to say that a Rexxer map would improve a bike regardless of how it is set up ?
By that I mean whatever exhaust, ECU, chip, airbox combination it may be running at any given time ?

[Grumpy]

Having the ecu re written will improve the engine no end.
On my S4,I had a ducati race ecu fitted and then set up correctly by the local independent ducati guy, Karl Harrison. The bike pulls smoothly from low revs right to the red line.
I've also just had the ecu re written by the local rexxer guy in Peterborough, on my Griso. The bike has , again been improved right across the rev range.
Any 'twicking' of the map will make a bike run better, especially with the way either ducati or any oif the bike manufacturer's have to set up a bike to pass the EU emission laws.

[Darren69]

No the rexxer map would be specific to your bike. if the rexxer map was done for your specific bike setup then there would be improvements. If you did a dyno run and then remap to suit it would be better. If you did and ecu swap and flash with a generic rexxer map then it might not be exactly right Having said that there is probably a map that would suit available from Cornerspeed or somewhere that would be pretty close.

The main difference between the rexxer and the PCIII is that the PCIII is an 'over' processor in that it reads the standard map and then adjusts it according to what it is programmed to do. The rexxer as i understand it is a replacement for the standard ecu that is adjustable/tunable in the same way.

I suppose that the later bikes with later ecu and the exhaust valve and lamda readouts might not perform in the same way that the earlier bikes do and that may be noticable. but from my experience the PCIII once it is correctly programmed solves all issues with low speed leaness. 2 hours on the dyno with Neil have sorted it all out and my bike doesn't care less. It runs pretty much perfectly now.

[SteveM900]

A Rexxer is a tuning device that downloads a modified map to your bikes ECU, it does not replace it.
Fit a standard ECU and have that flashed and flog the DP ECU. It will work better.
A Dynojet PCV does not control the fuelling below 4 thou rpm, the engine speeds for town riding, it will still surge/snatch.
Like I said, been there done that. Originally was going to get the ECU reflashed, but bought a Rexxer unit for the extra hundred quid over the cost of a reflash. You can then use the unit to reset the service interval and diagnose faults in the system.

[Mr Gazza]

Please excuse not so much a hijack, as a slight swerve.

I am very happy with the way my bike runs. It has the ECU of the very early injection Monsters (2000)...Can't remember the numbers off hand. It's the one with no immobiliser or alarm and just TPS, ambient and engine temp sensors.

I think I have read that these ones are too unsophisticated to warrant any sort of re-flashing/re-mapping.
I might be thinking of looking into a bit of a tune up when I finish coring my silencers...Is it worth it with this ECU? Should I leave well alone or investigate another ECU?

[JMH900sie]

Please excuse not so much a hijack, as a slight swerve.

I am very happy with the way my bike runs. It has the ECU of the very early injection Monsters (2000)...Can't remember the numbers off hand. It's the one with no immobiliser or alarm and just TPS, ambient and engine temp sensors.

I think I have read that these ones are too unsophisticated to warrant any sort of re-flashing/re-mapping.
I might be thinking of looking into a bit of a tune up when I finish coring my silencers...Is it worth it with this ECU? Should I leave well alone or investigate another ECU?

As you know gazza, I have the same bike as you....

I've fitted a power commander 3 to mine, and it's the best Money I've spent yet. I made power and torque, and really smoothed out the ride! One from a 900ss or 750ss will fit, you just have to load the right map.

Joe

[Darren69]

Yep the PCIII is a great bit of kit. I'm yet to be convinced that a rexxer is better (at least for these early bikes) besides the extra hardware. They can remap throughout the rev range and I specifically had mine on the dyno and had Neil remap the lower rev 2-4k fuel/air map to improve the low speed running and I have had no issues, it has transformed the bike, so a couple of well spent hours on the dyno. He probably already has maps that you can put in yours if you can't get the bike up to him.

[JMH900sie]

Also.... Quick shifter yo!

[Mr Gazza]

One from a 900ss or 750ss will fit, you just have to load the right map.
Joe

Assuming you mean a 900SSie or750SSie?

By "fit" does that just mean the physical compatibility of the plugs? or the internal electronics?

Would this fit? http://www.ebay.co.uk/itm/Ducati-999-power-commander-3-dyno-jet-/252263393846?hash=item3abc11ea36:g:z1QAAOSw5dNWo4p G#ht_24wt_963

They seem quite expensive. How much do folk charge for just the maps through the post ?
What would a dyno session cost..Ball park?

[JMH900sie]

That's what I meant yes. The plug is the same, the only difference is that the m900 one has a different base map.... You download the maps for free from power commander.

A 999 one won't fit.....

I paid 120 for mine.....

If you get one, pm me and I'll walk you through how to map it

[Darren69]

Yea most are the same basic unit but the plugs on some 749/999 won't fit but for yours you could get 750/900ss/monster and maybe 1000ss/monster or maybe 748.916 or similar to fit. i think its only the plugs that are different on some of the models. And you can download the right maps as a starting point but its worth getting it remapped on a dyno if you can. Keep a lookout on ebay as you can usually pick one up for about £100

[Mr Gazza]

Thank you both...I understand better now.

I hope this has helped the OP too?..:D