best way to tune 950? PC3? cobra? IEDs? - Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum
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post #1 of 13 (permalink) Old 12-02-2010, 07:41 PM Thread Starter
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best way to tune 950? PC3? cobra? IEDs?

just wondering.

the wife a has pipe on her 950, and it POPS bad, a lean decel pop.

and it's HOT.

so i need to get her an air cleaner, and a tuner,

is there a cheap package, or where to find used?

i have not seen a PC3/power commander for the 950.


will an IED in the O2 do anything on a Yammie?

http://www.nightrider.com/parts/

approximates richer fuel mixtures to quickly and simply improve the closed loop fuel mixture on your Buell. The Buell ViED can alter the AFR from approximately 14.4 to 13.6. This results in cooler exhaust temperatures. Recommended for stock bikes and those with upgraded exhaust or intake
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post #2 of 13 (permalink) Old 12-02-2010, 08:34 PM
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PC lll

Pacific Coast seems to have a PC V for a 950.

http://www.pacificcoaststar.com/pcs/...erformance.htm

Dave
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post #3 of 13 (permalink) Old 12-03-2010, 09:13 AM
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Haven't seen the wiring diagram for the 950, but if the injection system is anything like a car it's easy to fool. Find the OAT (Outside Air Temp) sensor(usually in the air box or inlet air path), remove and freeze. Measure the sensors resistance when frozen and replace with a resistor of the same or slightly lower value. This tricks the computer into believing its colder and from it's internal map will respond with a richer mixture. Side effect it'll put more zip in your zap, at the cost of some fuel economy. This is what all those $20-30 power increasers on E-bay are.

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post #4 of 13 (permalink) Old 12-03-2010, 11:48 AM
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If it's popping on decel look at plugging off the AIS system - PCV/III can't hurt either since you've made and are planning more intake/exhaust changes.

Last edited by Madski; 12-03-2010 at 12:55 PM.
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post #5 of 13 (permalink) Old 12-05-2010, 04:36 AM
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there are cheaper fuel processors for the 950 than the power commander. you can get a Cobra FI2000 for about $200 and you can adjust it however you want and not have to get it professionally tuned.
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post #6 of 13 (permalink) Old 12-05-2010, 12:15 PM
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You do not have to have a PCIII or V dyno tuned. You can download the same type of generic map as what the Corbra piece does but you retain the option to have a unit that thousands of shops know how to tune if you want to go that route.
Each bike is a little different and there is a HUGE difference between generic maps you get from these piggy-back unit makers and what a proper dyno tuner can do.
PowerCommander will do anything that the FI2000 will do and quite a bit more.
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post #7 of 13 (permalink) Old 12-08-2010, 09:22 PM Thread Starter
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Originally Posted by Madski View Post
If it's popping on decel look at plugging off the AIS system - PCV/III can't hurt either since you've made and are planning more intake/exhaust changes.
i am very familiar with the PC3/5 and have massaged my own maps before.

i think the Cobra just has several screws to set the mixture at diff RPM ranges, i had one on my V-rod, and played with it alot, dyno'ed ~109hp at the wheel.

i don't think a PC3 is worth ~$100 more, she only has ~1000 miles on it.

i will scope out ebay for used PC3

the cobra is $185 shipped on fleabay.
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post #8 of 13 (permalink) Old 12-08-2010, 09:45 PM
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If you want to get the most out of your mods it's worth $100 or so. If you just want to sort richen her up a bit so it does not run hot and pop like a pig the cobra is probably fine.

To me if its worth doing its worth doing right. My R1 turns 168.3hp at the wheel with a PCIII, a proper dyno tune and safe A/F ratios. It "only" did 163.1 on a slightly tweeked generic tune (for my mods). The biggest thing was that we picked up close to 19hp in the meat of the powerband from the generic map. Was that worth it? I sure think so.

Last edited by Madski; 12-08-2010 at 09:55 PM.
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post #9 of 13 (permalink) Old 12-08-2010, 09:54 PM Thread Starter
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yeah, for your only bike that you ride hard...yeah..

but for her bike that she only rides ever so often, she would rather spend the $100 on christmas for other people.

looks like the PC5 is PN
PC22-009

Your Price: $295.96

http://www.google.com/#hl=en&&sa=X&e...9141da4f416ce8
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post #10 of 13 (permalink) Old 12-08-2010, 10:08 PM
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PC5 can run in open loop and continuously tune the bike unlike pretty much anything else in or near its price range. You set the target A/F R and off she goes - probably a bit of overkill for a cruiser but hey technology is great
PCIII is a bit simpler in that it does not pay any attention to O2 readings at all, just runs its own (or your modified) A/F maps.

So far as your AIS question - it does have an AIS system so it will contribute to popping on decel. If you ever go to dyno the bike it has to be blocked off in order to get a correct A/F reading. Not sure if anyone makes a kit to block it off on the 950 yet but it should not be too difficult to redneck engineer

Getting a proper tune is not only about picking up HP/Tq - it also does quite a bit for general "drivability" of the bike. If you've had yours done you most liekly noticed that it not only pulls better but likely runs smoother across the range.

Biggest thing is that I managed to type all of that up without a signle HD joke...

Here's a PCV for $270 - he does not show the one for a V-Star but I'm sure he can get it for you: https://www.motomummy.com/store/prod...3&cat=0&page=1 - he also ships everything free.
Ask for Corey, tell him "Madski" for the R1 Forum sent ya :-)

Last edited by Madski; 12-08-2010 at 10:16 PM.
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