New Power Commander S4RS

[SikDuc]

Has anyone bought one yet?  It's on their website now.  I talked to a freind of mine yesterday at Dyno-jet and he said the new Power Commander is out.  He was telling me that it works great........But, at lower RPM's, when you cut the throttle, it still runs  a little lean due to the closed loop.  I think he said something like under 20% throttle it's lean.

Lou 

[Carman]

hmm. . .I just checked their website and didn't see it, regardless I will contact my local guy and see if he can get a hold of one.  If it happens I will post a report

[CDawg]

I only saw a 2008 S4R (which is odd...) module which does not tune below 5250 RPM and below 19% throttle.
http://www.powercommander.com/powercommander_iii_usb/powercommander_all_downloads.aspx?mk=5&mdl=193&yr=2008

[Carman]

Lou,

Did you see it on their website I can't find it, I was just hoping to find it for a part number

[He Man]

Its the same type thats currently out there for the Hypermotard. Only good for the upper RPMs which we dont see much of. The majority of our riding comes from lower RPMs, so thats the area to focus on.

[Moronic]

I only saw a 2008 S4R (which is odd...) module which does not tune below 5250 RPM and below 19% throttle.
http://www.powercommander.com/powercommander_iii_usb/powercommander_all_downloads.aspx?mk=5&mdl=193&yr=2008

CDawg, there is a 2007 version listed as well:

http://www.powercommander.com/powercommander_iii_usb/powercommander_all_downloads.aspx?mk=5&mdl=193&yr=2007

Basically the same page, only the "8" changed to "7" above the pic of the bike.

Thanks to the OP for the alert on this. The low-rpm/small throttle restriction isn't ideal, but there is another way of looking at it.

That is: if you can put up with the low-speed surging and stock low-end, then in theory you should be able to fit the PC and get a stonking mid-range and pretty solid top-end with just slip-ons of some sort. Or with any full system designed to run on the stock chip. (Arrow, Akra, Zard, IIRC.)

(I'm basing this on curves published on TOB where big gains were had from just the Termie Shorty and a DP ECU with PC added and tuned.)

Not sure what the transition would be like when the revs hit 5250. But presumably a tuner could smooth that, using the PC.

Sounds like cheap grunt to me.

Brad Black's curves for stock vs the full termi kit show the kit doesn't do a great deal below 5250.

Am I missing something?

I know the surging is a pain around town but it's only a bother under 90kmh/55mph.

[CDawg]

That is: if you can put up with the low-speed surging and stock low-end, then in theory you should be able to fit the PC and get a stonking mid-range and pretty solid top-end with just slip-ons of some sort. Or with any full system designed to run on the stock chip. (Arrow, Akra, Zard, IIRC.)

True, but ideally you'd want to be able to get rid of the power dip ~4500 rpm.  Since I don't track much, a smooth low end is very desirable

[dbran1949]

I have the full termi install, and while the top end is amazing I spend a lot of my commute lane splitting at 15 to 45 mph with small throttle openings. It feels like I am running mostly on one cylinder, sometimes I worry I am shortening the life span of the engine

[He Man]

I have the full termi install, and while the top end is amazing I spend a lot of my commute lane splitting at 15 to 45 mph with small throttle openings. It feels like I am running mostly on one cylinder, sometimes I worry I am shortening the life span of the engine

Thats not right then. the Full Termi kit comes with an ECU to smoothen out hte lower rpm range. maybe your talking about the stock gearing thats causing the bike to be choppy, like you have 1 cylinder.

[dbran1949]

I have the 14t front sprocket, the bike just doesn't sound or feel right at the small throttle openings. It is not surging by any means, and when I need the burst to squirt into a lane it is right there. On some days when almost the entire commute (20 miles) is done between the lanes, I feel I have to take the bike back out later in the evening for an Italian tune up

[He Man]

by who?

these guys?

[SikDuc]

Part Number is 733-411. 

[dbran1949]

by who?

these guys?

No the "Italian tuneup" means taking it out on some back road for some high speed carbon cleanup

[hypurone]

I have the full termi install, and while the top end is amazing I spend a lot of my commute lane splitting at 15 to 45 mph with small throttle openings. It feels like I am running mostly on one cylinder, sometimes I worry I am shortening the life span of the engine

This IS a race system and is mapped for the track and higher rpm. The DP ECU is pig rich. This is exactly why I added a PCIII. Though you might get lucky and be able to get the CO adjusted leaner and get away with it but it wasn't that way for me. If they ran the CO lean enough to smooth things out down low, it hurt things everywhere else. I highly recommend a PCIII and some dyno time. The extra HP and torque doesn't hurt either! 

Thats not right then. the Full Termi kit comes with an ECU to smoothen out hte lower rpm range. maybe your talking about the stock gearing thats causing the bike to be choppy, like you have 1 cylinder.

Nope not true, see above.

[He Man]

Thats strange, the guys ive met with a DPECU says it makes the bike run so much better all around, i guess its casue their bike was running like crap to begin with and any improvement is a good improvement lol.