mike lowary
Well-known member
A lot of people disagree with you on this. Makes sense to me though.
NRHS Stage 2 for 07 XB12R
- Thread starter cjmech
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A lot of people disagree with you on this. Makes sense to me though.
34nineteen
Well-known member
I can see why more knowledgeable riders like upaero and outthere run their bikes that way. They appear to both be extremely knowledgeable and well versed in the operation of their bikes and able to troubleshoot and resolve problems if and when they arise.
For the rest of us, myself included, running like that is like giving a machine gun to a monkey. I can figure out *most* but not all issues on my own, but even I know that I can easily get in the weeds when given too much control over the tuning. I know just enough to be dangerous, and would need a lot of patience and hand holding if I ran my bike in that configuration. Pre-canned tunes are best for me.
YMMV. Just my $0.02.
On another note....hey outthere, what exhaust is that? It looks like you married a Force to a SS Drummer? I like it!
For the rest of us, myself included, running like that is like giving a machine gun to a monkey. I can figure out *most* but not all issues on my own, but even I know that I can easily get in the weeds when given too much control over the tuning. I know just enough to be dangerous, and would need a lot of patience and hand holding if I ran my bike in that configuration. Pre-canned tunes are best for me.
YMMV. Just my $0.02.
On another note....hey outthere, what exhaust is that? It looks like you married a Force to a SS Drummer? I like it!
mike lowary
Well-known member
Cooter
Well-known member
Primary Porn
lawdog
Well-known member
Did you guys change your timing at all from stock? I have left mine stock but Hammer Performance suggested Harley stock maps may be too aggressive for the big bore kits due to the higher compression.
cvc
Well-known member
Mike check this out. Shaved 4.5 lbs off the drivetrain with this setup. You need it.
What primary is that? And do the do multiple ratios?
mike lowary
Well-known member
Yes the ignition timing maps were changed. The stock and race timing maps are ok up to a certain point. What’s your compression ratio now? Did you get the 30 degree reverse dome pistons?
cvc
Well-known member
Should have blown up the pic before asking. That’s what I get for looking at stuff on my phone.
mike lowary
Well-known member
lawdog
Well-known member
I am running the stock timing map right now. Looking through old posts it looks like I played around with timing about 10 years ago, wasn't satisfied with any changes I made or the race timing maps, and went back to stock. I have the 30 degree reverse dome pistons with a target compression ratio of 10.5:1. I have never actually measured it.
mike lowary
Well-known member
Several factors come into play with this. Raising compression, 30 degree combustion chamber, and getting the squish band dialed in. All of these things require less timing to make power. Especially the 30 degree chambers and squish band. The 10.5:1 compression isn’t really high enough to make such a difference. In my case it would because I’m at almost 12:1. I could whip you up a better base timing map if you like. Let me know. What year is your 12?
lawdog
Well-known member
2009 XB12R with BUEZD
outthere
Well-known member
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- Jun 16, 2018
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I do like that primary set-up. The Norton could have used something like that.
Running open-loop still lets the ECM correct for lean conditions. I seem to help bottom power more than anything. The bike pulls a well-running open loop.
That is Force/Drummer combination. It Fits Dean's muffler also but it's in a bit of a bind so I'll give this a go this year.
Running open-loop still lets the ECM correct for lean conditions. I seem to help bottom power more than anything. The bike pulls a well-running open loop.
That is Force/Drummer combination. It Fits Dean's muffler also but it's in a bit of a bind so I'll give this a go this year.
upaero
Well-known member
Actually, in open loop the ECM will not correct for a lean or rich condition. However, the O2 sensor can still be active to inform you about sensed lean condition with a CEL. That way you can do something to fix the problem instead of having the ECM try to compensate for it without you knowing.
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