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[jimcb1]

i have jackpot 2-1-2 head pipe with stock cvo mufflers and H-D tunner,  dealer is tuning it this week

[Doc 1]

Depends on what you want the bike to do....run cool or high mileage......max the tq or max the hp.
Doc

[jimcb1]

run cool ,hp, tq

[diveguy69]

curious to see what a dealer tune gets ya.  are they going to custom tune or canned map it?

[jimcb1]

custum

[Mr D]

i have jackpot 2-1-2 head pipe with stock cvo mufflers and H-D tunner,  dealer is tuning it this week

High Flow A/C ?

[jimcb1]

they said they would let me know if it does't have one

[jimcb1]

nobody knows what good AFR numbers are?

[Joelgonia]

check other postings in here - several discussions simultaneous!  13.1 for stock, not sure about mods -- several guys in here seem to know quite a lot about this, so I'm sure you can find the threads.  Also, the conversations seem to include the exhaust and tuner options / choices.  If you start a chat with one these guys, they will need a lot of data from you, but they will give you an honest opinion!

[Steve Cole]

What's good for one may well not be good for another. There is no magic number that's going to make everything OK. Each bike needs what it needs but in general 14.6 at light load and cruise with it dropping towards 13 at full throttle full load areas.

[grc]

nobody knows what good AFR numbers are?

The air-fuel ratio varies depending on all kinds of things.  What is good for wide open throttle and 6000 rpm is not worth two dead flies at 15% throttle and 2000 rpm, for instance.  Your question can't be honestly answered as you have stated it.

Good cruise numbers might be anywhere from 14.0 to 14.7, depending on things like whether or not you want additional cooling from the richer mixture, or better mileage from the leaner mixture.  That 13:1 number mentioned earlier I assume was for max power runs, it's much too rich for steady cruise.  Others will tell you that for max power you need to be in the mid 12's.  What it all really comes down to, however, is that there is no one magic number.  Different engine designs respond to different AFR's, and even different engines within the same design family can respond differently to the same AFR's.  That's why you need a real professional tuner who fully understands internal combustion engines, and not just a guy who had a one day class at DynoJet to learn how to run the equipment.

Rather than try to tell your dyno guy what AFR you want, just tell him what results you want.  If he's any good at all, he'll know what to do to achieve your stated goals.  And if your goals are that you want everything, hopefully he will be honest enough to explain to you that it doesn't work that way.  Some things are either/or, not all of the above.


Jerry

[aclass]

The air-fuel ratio varies depending on all kinds of things.  What is good for wide open throttle and 6000 rpm is not worth two dead flies at 15% throttle and 2000 rpm, for instance.  Your question can't be honestly answered as you have stated it.

Good cruise numbers might be anywhere from 14.0 to 14.7, depending on things like whether or not you want additional cooling from the richer mixture, or better mileage from the leaner mixture.  That 13:1 number mentioned earlier I assume was for max power runs, it's much too rich for steady cruise.  Others will tell you that for max power you need to be in the mid 12's.  What it all really comes down to, however, is that there is no one magic number.  Different engine designs respond to different AFR's, and even different engines within the same design family can respond differently to the same AFR's.  That's why you need a real professional tuner who fully understands internal combustion engines, and not just a guy who had a one day class at DynoJet to learn how to run the equipment.

Rather than try to tell your dyno guy what AFR you want, just tell him what results you want.  If he's any good at all, he'll know what to do to achieve your stated goals.  And if your goals are that you want everything, hopefully he will be honest enough to explain to you that it doesn't work that way.  Some things are either/or, not all of the above.


Jerry

That some good info right there.