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[newseultra07]

Ok found a local indy shop that says been thru TTS training on doing tuning without Dyno using the V-Tune within TTS.  Says he is took the 2 day class with Doc down in Florida. My question is how good a tune can you get without a dyno... Im just doing a cam change on a CVO 117.

[hd-dude]

It will work fine in the closed loop areas only. Idle, part throttle and cruise areas are closed loop typically.

[TN]

Do yourself a favor and have it properly tuned by a competent tuner with a dyno and proper tools.

JMHO

[IA17RGU]

Ahh. Just for reference. I tune bikes. Lover vision and tts and both Harley tuners.

Fact. You can tune a bike on a dyno

Fact you can tune a bike with a laptop.

The dyno takes less time cuz you don’t have to go anywhere

Fact. My shop will charge you the same amount of money.


Make your own choice.

Fact. Tts said unless you are drag racing and have some custom ground cams you will get really close with the downloaded tune.

Will it go faster with auto tune/vtune/ cam open session. YES!  If you ride the bike before and after auto tune can you tell?

MAYBE!!


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[newseultra07]

Ahh. Just for reference. I tune bikes. Lover vision and tts and both Harley tuners.

Fact. You can tune a bike on a dyno

Fact you can tune a bike with a laptop.

The dyno takes less time cuz you don’t have to go anywhere

Fact. My shop will charge you the same amount of money.


Make your own choice.

Fact. Tts said unless you are drag racing and have some custom ground cams you will get really close with the downloaded tune.

Will it go faster with auto tune/vtune/ cam open session. YES!  If you ride the bike before and after auto tune can you tell?

MAYBE!!


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If I could find a close map for cam I’m using I would just do that. But so far can’t find one. I’m going with a Maxcell 821h cam and it has a .475 lift

[grc]

If I could find a close map for cam I’m using I would just do that. But so far can’t find one. I’m going with a Maxcell 821h cam and it has a .475 lift

And THAT is why you need a full tune, not just an "auto tune".  If you start out with a good base map that matches your modifications, one of the various forms of auto-tune is probably sufficient for most users.  But if you don't have a good base map, you may be way off in the open loop areas even after using v-tune to clean up the closed loop areas.  Just my humble opinion, but I think you will be much happier in the end if you have a real expert (like Doc for instance) do a full tune. You can always use your newly acquired V-Tune training in the future if you want to tweak things or just experiment for the heck of it.

JMHO - Jerry

[IA17RGU]

On. That being said then yea I’m back to a dyno run. Some one will need a cam spec sheet. Or a starting point. You could find a cam already there and then do a cam open run then tune....but your not just plug and play. Call the vendor of the tuner or the manufacturer of the cam. They will give you a starting point


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[rayson56]

Put it on a dyno period, once your wallet heals you'll have no regrets.