749 2005 749s + Pc3

All of the above are fine.

If you go with a full system then yes you really need to either run a pc3 or have the ecu remapped. Speak to Chris W about this as hes the man.

A slip on is fine without a pc3 but I would recommend one.

I had a storm slip on and it ran crap with the pc3 map.

Ive just put a termi asymetric system on and it now pulls like a train with the pc3 map.

All depends on what you want. If you want the very best then a custom map is the way to go.

 

Even with the standard maps, I`d still recommend some dyno time, just to fine tune and for peace of mind.
My bike came with Remus silencers and a pc3, I also fitted Pipercross air filters. With this set up it was running massively rich, my mate said he could taste the fuel when he followed me.
I took it to Chris Gunster at Grimsby, he remapped the power commander and it now goes like a scalded cat, more than enough bike for me.

 

Doesn`t really mean much to me, but here`s two of the graphs. Don`t read too much into the power bp numbers, different dyno`s give different readings on different days, if that makes sense. All it does show is any before and after improvements. I think the air/fuel ratio is set at 13.2.
I`m pleased with the results, the bike now picks up and go`s and has better fuel economy.
Thanks to Mr Gunster, there will now be a lot of sad looking local petrol station owners, cancelling their orders for gold plated Rolls Royces.

 

I've got a 749 with the asymmetric half termi system, high flow air filters and the matching Ducati ECU. was thinking of fitting a PC3 and getting it custom mapped at a dyno centre. Has anyone done this and noticed a difference ?

I'm sure there's a difference with a standard ECU and Termi's as the PC3 remap optimises the Termi's and air filters. But is there much difference if I've already got the DP ECU ?

Cheers

 

The DP ecu is matched to the pipe so all a PC3 will do is trim the fuel map.

I have ran the DP map and it makes my bike rev out nice and clean but the power is pretty linear (still goes nice mind).

With the OEM map and the PC3 Assymetric map it doesnt have the top end but the bottom end is a whole different beast. Like another bike. Loads of torque!

To be honest, I wouldnt think it was worth doing unless you are trying to chase that extra bit of power and then the best way is for a custom fuel map on the DP Ecu rather than the Pc3.

 

Thanks JC
I now got a PC3 for reasonable price (used) and fitted it. I've got both the DP ECU and the standard one. DP fitted at the moment and I loaded a zero map for now.
Which ECU do you reckon I should fit if I get it custom mapped at a dyno centre. I was wondering if it would make any difference really as the PC just adjusts the mapping to get a steady air/fuel ratio. So the end result would be the same wouldn't it whichever ECU on the bike ?

 

if you are remapping the pc3 then i would seek the advice of the dyno guys that are doing the work as they will have an opinion on it.
before you go that far it is worth swapping the ecu over and runni g the correct pc3 map with the oem ecu, just so you can compare. have nothing to lose. make sure to reset the tps when you swap the ecu.

 

Might just do that.

Resetting the TPS ? I think you can do this with the power commander software can't you ? Is it just case of making sure the throttle body valves are completely closed then with the power commander plugged into the laptop clicking on TPS reset ?

How did you reset yours ?

 

Avoid using the TPS reset via the power commander or you'll not get the bike to start. A TPS reset should be done via diagnostic software (JPDiag or Guzzidiag)

 

Exactly as Chris says. Have a look through the forum, its easy.

 

You have to have Dyno time. What's the point of changing all these things and not setting it properly - by the professionals. But, find a Dyno man you trust, he should be doing quite a few runs and not be concentrating on all out bhp but a smooth curve and a good tq graph.

 

Mine came pre-owned with power-commander, termis etc and a dyno readout. The peak bhp is 130 (999), which I know is not reliable but what is impressive is the power and torque curves - both of them a super-smooth curve and you can really feel it on the road.
When I had a carby SS, someone tried to persuade me to let them set it up on a dyno but the prospect of them having to dismantle the carbs every time they wanted to make an adjustment scared me silly in terms of dyno time and man-hours.
With a PCIII though, all they have to do is twiddle the settings, more or less in real time - has to be so much more cost effective.

 

If your going to get a bike mapped on a dyno, flog the PC3 and have the ECU mapped instead. It'll be more reliable but fewer people can do it.
CJS in Bristol are my top tip of the day, even though JHP are round the corner from me.

 

If I map the ecu on the Dyno do I have to buy one of these "race ecu's"? Or is that race ecu just holding a different map?

 

From what I'm aware the standard ECU can be reprogrammed if you have the right kit. It's easier and cheaper to prog a PC3 though which I'd why they're used so much.

 

Thanks. You seem you know what you are on about so I need the odd bit of sensible advise with the bike. What gearing are you running and why?

 

Thank you, but it wouldn't matter. My track bike is a tuned 996.
For what it's worth though I'd keep the standard rear sprocket, maybe +1 tooth if you're changing it anyway. Then take a 14, 15 & 16 tooth front sprocket. From my experience you can get away with changing the front without having to extend/shorten the chain. That way you're pretty much covered which ever track you go to.

 

Thanks. I think the front 14 is sound. Maybe a 15 at snetterton. I've also pretty much thought the same on the rear. Bought enough to go +/- 1 or two so I think I'm covered. Changed the chain to 98 links so I've enough room for alterations.

 

If it's gonna be your first time out with short gearing on a new chain, check the tension after each session. Mine stretched like crazy. Once the initial slack was taken up it's been ok since though.
Sounds like you've got a good plan so just enjoy it.