I've noticed a lot of people sharing maps around lately and I thought I'd try and get in on the action! I don't actually need the whole map, I was hoping to just get AFR and CLB tables from a similar build (details in signature) so I can compare them to what I've got. My bike runs well except for a minor stumble at low RPM & low MAP. And I seem to be going through spark plugs like nobodies business. I also had a free power run on a dyno last year and showed 86HP/92TQ, which I thought was a bit low for my setup, and now I'm hoping it may just be a tuning issue. I haven't touched timing at all.


Any help would be greatly appreciated,
Thanks,
Matt.

 

Matt,
The ONLY way you will benefit from another bike's VE and timing tables is if your the other guy's pieces are EXACTLY the same as yours.
Head porting produces widely varying VE requirements.
Exhaust system design also produces widely varying VE requirements.
With those 2 biggies I would work with what you have and try identifying the TP/RPM cells that have issues then try 10% richer in those cells. If worse go the other way until it gets worse.
Sounds like you are pig-rich somewhere because you are fouling plugs.
Bob

 

Thanks Bob. I agree with the 'pig-rich somewhere ' part, that's why I wanted to compare afr and clb tables. I have the VEs sorted.

 

good advice from FLTR117, i would also take a photo of plugs

use that as start point and would take say 3-5pts off your whole VE table for each cyl (maybe less for rear as run a bit leaner)

ride, check specific areas as Bob suggested, check plugs and adjust things again

 

 

Plugs don't look too bad to me, maybe a little on the lean side. But it seems to have rich symptoms. Which is why I just wanted to compare a fuel table, also I don't really like the idea of blindly changing VE values hoping for the best. I've made a lot of smart tune runs and am happy with the VEs. I also changed a lot of values in the AFR tables over the last year and I'm just worried that I may have gotten right off track somewhere along the way. Thanks for the replies.

 

i would say you have scope to actually increase the VE's (add fuel, more power) looking at those plugs, tan deposits be nice

especially as you move up into WOT

 

Thanks. It cant hurt to try, I can always go back to what I have now. I'm just not sure the whole table needs to be richer! I had a mate of mine riding behind me a little while ago and he told me it smelled very rich when I gave it a handful, that's what makes me think its probably just the top left corner of the table that is causing the stumble, not sure for over all power though!!

 

Even just a screen shot would do???

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Bump!!

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