Is Pc 3 The Remedy?

Greetings,
I've read most of the threads concerning the 6th gen lean running but I haven't found the definitive answer to this question- will the re-mapping cure the off-idle stutter? I've read that the PC 3 and re-mapping seems to smooth out the fuel delivery at speed but my '04 runs fine with no surging at speed; it's the low-speed, slow corner, off-idle stuttering that is truly aggravating. It's really a challenge to be smooth on this bike at low speeds. Any advice would be appreciated (other than parking it and riding my carbed '96 exclusively). Thanks.
Joe

[image: View Post]MaineRider, on Oct 11 2009, 08:33 AM, said:

Greetings,
I've read most of the threads concerning the 6th gen lean running but I haven't found the definitive answer to this question- will the re-mapping cure the off-idle stutter? I've read that the PC 3 and re-mapping seems to smooth out the fuel delivery at speed but my '04 runs fine with no surging at speed; it's the low-speed, slow corner, off-idle stuttering that is truly aggravating. It's really a challenge to be smooth on this bike at low speeds. Any advice would be appreciated (other than parking it and riding my carbed '96 exclusively). Thanks.
Joe
Hi Joe, I have an '04 that had this problem as well as the 4-4,500k rpm stumble. Installing the PCIIIusb loaded with Cozye's map and the O2 eliminators (Radio Shack .99 cent resistors) cleaned up this and the stumble. Completely happy with the results I got from installing the PCIII.

Yes......a power commander is a good tool to smooth out the low speed throttle response. I have a with a PCIII and Cozye's fuel map and it was a noticeable improvement.

It seems that most of the people using the PC III to sort out the "flat spots" have some sort of aftermarket exhaust system. Will it work as well with stock exhaust? Maybe a better way to ask the question is; Will I be able to find a good map to use with the stock exhaust?

[image: View Post]TomN, on Oct 11 2009, 09:44 AM, said:

It seems that most of the people using the PC III to sort out the "flat spots" have some sort of aftermarket exhaust system. Will it work as well with stock exhaust? Maybe a better way to ask the question is; Will I be able to find a good map to use with the stock exhaust?
My bike is completely stock engine and exhaust wise. The pciiiusb w/cozye's map and 02 eliminators made a night and day difference in how the bike ran.

One thing that hasn't been mentioned is how low of RPM's you're talking about. Do a search for a VFR dynometer chart with the torque curve. Even though our bikes have more torque relative to Race Replica inline-fours, there is still very little torque at low RPMs. I would recommend keeping it above 5,000 RPM's when cornering.

Thanks to all for the responses; this is a big help in steering me in the right direction. There is a Ducati shop nearby that also happens to be a PC licensed facility; I'm going to call them on Monday.

Regarding your question, Ryan, I agree keeping above 5K works best with the 6th gen; however, there are times when it's difficult to maintain the 5k. For example, there is a street that I have to turn on to on the way home from work. It's a slow-speed turn to begin with plus there is a nasty pavement dip right at turn-in which forces a further reduction in speed so I'm well below 5K unless I'm doing a ton of clutch-slipping. It's one of those aggravating, in-between-gear turns that an engine with more low-end tourque would handle easily. That off-idle lean stutter really compounds situations such as that.

Mt '96, on the other hand, has no problems coming back on throttle smoothly at that same turn. I enjoy both bikes and they each have their own strengths but overall I actually prefer riding the 13 year-old 4th gen over the 6th gen (at least until I get the fuel delivery sorted out on the '04). Thanks again.

Joe

[image: View Post]MaineRider, on Oct 11 2009, 01:08 PM, said:

Thanks to all for the responses; this is a big help in steering me in the right direction. There is a Ducati shop nearby that also happens to be a PC licensed facility; I'm going to call them on Monday.

Regarding your question, Ryan, I agree keeping above 5K works best with the 6th gen; however, there are times when it's difficult to maintain the 5k. For example, there is a street that I have to turn on to on the way home from work. It's a slow-speed turn to begin with plus there is a nasty pavement dip right at turn-in which forces a further reduction in speed so I'm well below 5K unless I'm doing a ton of clutch-slipping. It's one of those aggravating, in-between-gear turns that an engine with more low-end tourque would handle easily. That off-idle lean stutter really compounds situations such as that.

Mt '96, on the other hand, has no problems coming back on throttle smoothly at that same turn. I enjoy both bikes and they each have their own strengths but overall I actually prefer riding the 13 year-old 4th gen over the 6th gen (at least until I get the fuel delivery sorted out on the '04). Thanks again.

Joe

You may want to try Cozye's map before shelling out $300 for a custom tune. See how it works at least.
Something else to keep in mind is that if you are buying new, a PCV costs only a few dollars more than a PCIII and lets you have the later option of upgrading to autotune (and map-by-gear), OR, use that money you were going to spend on the dyno-tune and get the wideband sensor for autotune!

I know what you mean, I'd love to have a little more low down torque, and I've been working on cornering in a lower gear to fight this, the problem becomes that the throttle is more sensitive with higher RPM's.

I have found on the 6th gen I need to cover the levers, (which I do anyway). Whenever I do slow speed manuveurs I always use the clutch to smooth things out.

I don't know about a 'stutter' but my '04 (w/PCIII, O2 eliminators and Cozye's map) still has a fairly abrupt off-idle jump from closed throttle. :mellow: Otherwise the PCIII has made a terrific bike even better IMO.