2010 Buell XB12Scg Idle Speed

Hi all,

I have a 2010 Buell XB12Scg that is all stock other than a K&N air filter and a Hawk exhaust and I am wanting to adjust the idle speed. The factory set idle speed of 900-950 RPM is too high in my opinion and I would like to drop it down to something like 750-800 if I can. There is nothing wrong with the bike and the only reason I want to do this is so that it sounds better when idling at a light, right now, IMO, it sounds like a very loud lawnmower.
I know that this bike has no external idle adjustment screw like the 07 and earlier bikes and that the idle speed is controlled by the ECM but I have heard that is possible to adjust the idle speed using ECMSpy. My question is what setting should I change in ECMSpy to achieve my goal. I'm not super savvy with the tool and just looking through all the settings available is a bit intimidating. It would be helpful to know precisely which setting(s) to change so that I don't mess up the rest of my tune.
Will doing this be bad for the bike in anyway ie. too low oil pressure at idle?

Any help would be appreciated.

Gord

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Originally Posted by Ggeezer

Hi all,

I have a 2010 Buell XB12Scg that is all stock other than a K&N air filter and a Hawk exhaust and I am wanting to adjust the idle speed. The factory set idle speed of 900-950 RPM is too high in my opinion and I would like to drop it down to something like 750-800 if I can. There is nothing wrong with the bike and the only reason I want to do this is so that it sounds better when idling at a light, right now, IMO, it sounds like a very loud lawnmower.
I know that this bike has no external idle adjustment screw like the 07 and earlier bikes and that the idle speed is controlled by the ECM but I have heard that is possible to adjust the idle speed using ECMSpy. My question is what setting should I change in ECMSpy to achieve my goal. I'm not super savvy with the tool and just looking through all the settings available is a bit intimidating. It would be helpful to know precisely which setting(s) to change so that I don't mess up the rest of my tune.
Will doing this be bad for the bike in anyway ie. too low oil pressure at idle?

Any help would be appreciated.

Gord

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This ^^^

You may also have issue getting the bike revved up from idle, as now you will be reducing the inertia of the crank. It may not be a big deal or barely even noticeable. I'd be more concerned about the lower oil pressure at idle.

X2

Don't do it. It's already a little too low.

Our XB 12's idle speed is around 1200 rpm.

My 08 is right at 950-1000, I would listen to what they're suggesting to you.

Okay, if you guys think it's a bad idea then I'll leave well enough alone.

Thanks for the input.

I heard this as well. Also that it may cause issues with the crank pin, Something about lower harmonics?? I cant find that thread, so probably not true, as to the reason. Sux, cause I love that slow idle. :upset:

Anyone throw a gauge on to see actual oil pressure?

Well, if you read the instructions to the LF Industries Hell-Fire v3.0 exhaust, it calls out to use a lower idle for maximum effect.

Here is John showing off his buff ponies to his neighbors. I think he's had one too many Rolling Rocks.

https://www.youtube.com/watch?v=lhrcPtAW4bE

Those sparks are just pieces of the valves, nothing to see here:concern:

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Originally Posted by Cooter

Those sparks are just pieces of the valves, nothing to see here:concern:

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That is cool. Valvetrain that self lightens itself for performance.....Where the hell have I been??