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Ultima switch setting and curves

Started by 1340evo, August 07, 2021, 02:09:47 PM

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1340evo

August 07, 2021, 02:09:47 PM Last Edit: August 07, 2021, 02:15:26 PM by 1340evo
So I got the Ultima unit in and it's fired up no problem. Its raining like mad outside so can't take it for a run just yet so looking at the settings and curves.

I'm running the VOES so I have all switches turned off.. this gives
switch 1    Off   use VOES
switch 2,3 Off   Curve 1
switch 4,5 Off   5500 rpm
switch 6    Off   Dual fire

Kind of feal cheated as everythings off  :teeth:

So I've static times so turning clockwise get it to where the red light goes off with Cyl1 at TDC on the compression stroke... Tick

Start it up and it runs and the green light is on all the time.. give it a blip, green light stays on.... give it a bigger blip, I can see the green light goes out.. so guess thats all good.

Question is with the std set up, whats max advance and by what RPM?

as you see here, curve 1 is about 34 deg by 2500 rpm... how does that look against the STD HD modules?... any ideas?






Burnout


Flipping switches is easy try the different settings to see what they do for your install.

Ideally you should set it with a light.
They don't call me Ironhead Rick just because I'm "hard headed"

1340evo

Looking at the curves, No 1 is the closest for BT Evo's... No2 only goes to 32 deg.. No3's about 29 deg and No4 about 26 deg.
Thought BT's were best at 35 deg?
I know you can off-set the curve so you end up at a give advance, but what does this do to it lower down?

Does anyone run a off-set curve??

Hossamania


I have a DTT, ran thru most of the curves and initial timing settings on my TC. Stock is 5/5. Ended up at 1/2, way low on the timing and advance curve, but it's what my motor likes best. Don't feel cheated! Work with it, and give the motor what it wants.
Disconnect VOES, and change switch 1, give it a whirl.
Change switches, ride.
Tuning!
If the government gives you everything you want,
it can take everything you have.

Ohio HD

Full timing advance of 35° is based on stock or near stock motors. Higher compression, different cam timing, gearing, etc. generally requires less full advance.

1340evo

Yes, I know the more tuned the less advance you need

I was just wondering how the advance lines (can't realy call them curves) look in comparison to the stock HD ones and if the HD ones are more of a curve?

Looking in the manual, all it says is max advance is 35 deg @ 1800-2800 for a BT

Sorry , whats a DTT

hbkeith

ive been playing with my Dyna 2000i , which i believe is the same unit as the Ultima , My RK EVO has Ported Heads ,EV27 Cam , Heads shaved for more compression , my Indy first tried curve 3 , Spark knock , put it on curve 4 it seemed good ran strong but loaded heavy on highway hot would spark knock , called DynaTech they recomended curve 2 with voes unpluged , NO it spark knocks worse . gona try curve 1 , if not happy going to try re timming it and retry curve 4

1340evo

I think the Dyna curves and the Ultima are different.
I've got ev27, K&N filter, open pipes.

Anyone have the HD curves?

Hossamania

Quote from: 1340evo on August 08, 2021, 01:24:41 AM
Yes, I know the more tuned the less advance you need

I was just wondering how the advance lines (can't realy call them curves) look in comparison to the stock HD ones and if the HD ones are more of a curve?

Looking in the manual, all it says is max advance is 35 deg @ 1800-2800 for a BT

Sorry , whats a DTT

Daytona Twin Tech ignition. Replaces the ecu.
If the government gives you everything you want,
it can take everything you have.

1340evo

Quote from: Hossamania on August 08, 2021, 08:09:18 AM
Quote from: 1340evo on August 08, 2021, 01:24:41 AM
Yes, I know the more tuned the less advance you need

I was just wondering how the advance lines (can't realy call them curves) look in comparison to the stock HD ones and if the HD ones are more of a curve?

Looking in the manual, all it says is max advance is 35 deg @ 1800-2800 for a BT

Sorry , whats a DTT

Daytona Twin Tech ignition. Replaces the ecu.

Looks like a lot more map options on that unit ....

Hossamania

Quote from: 1340evo on August 08, 2021, 09:38:42 AM
Quote from: Hossamania on August 08, 2021, 08:09:18 AM
Quote from: 1340evo on August 08, 2021, 01:24:41 AM
Yes, I know the more tuned the less advance you need

I was just wondering how the advance lines (can't realy call them curves) look in comparison to the stock HD ones and if the HD ones are more of a curve?

Looking in the manual, all it says is max advance is 35 deg @ 1800-2800 for a BT

Sorry , whats a DTT

Daytona Twin Tech ignition. Replaces the ecu.

Looks like a lot more map options on that unit ....

There are, it also used Mass Air Flow sensor, as opposed to just a VOES.
If the government gives you everything you want,
it can take everything you have.

1340evo


Scotty

Quote from: Hossamania on August 08, 2021, 09:59:17 AM
There are, it also used Mass Air Flow sensor, as opposed to just a VOES.

Hmmm that seems rather doubtful that DTT used a Mass Air Flow sensor on a Evo or a Twin Cam and that is based on using a lot of their products over the years.
Unless I have missed something could you point me to where you heard about this please.
I know the Twin Cams use a map sensor but that is not a Mass Air Flow Sensor in anyway shape or form and they still use the VOES with all the EVO ignitions.

Hossamania

I have mislabeled it as mass air flow when it is really a map sensor. Sorry for the confusion.
If the government gives you everything you want,
it can take everything you have.

Scotty

Quote from: Hossamania on August 08, 2021, 04:25:09 PM
I have mislabeled it as mass air flow when it is really a map sensor. Sorry for the confusion.

All good mate you had me scratching my head thinking I had missed something major on HD's  :bike:

1340evo

Does anyone have a programming cable for this unit, or know what web site Ultima uses in the US as I can't find them??

THanks

Scotty

Quote from: 1340evo on August 09, 2021, 12:07:31 AM
Does anyone have a programming cable for this unit, or know what web site Ultima uses in the US as I can't find them??

THanks

You can't pin the cable out as it has a chip in it and does not use stand rx/tx commands.
You used to be able to buy a cheaper cable but the company no longer offers it for sale.
Ebay has some that are better priced than the Dyna site and I have never seen a Ultima cable and don't even know if they ever had them made.
https://www.ebay.co.uk/itm/154011311352?epid=656345511&hash=item23dbca1cf8:g:y-kAAOSwvzxfEhZE

1340evo

thank for that.. will see how the existing curves go first then.. fingers crossed.

Does anyone have any ideas as to the original HD curve the big black box gives you??

14Frisco

Quote from: 1340evo on August 09, 2021, 07:27:12 AM
Does anyone have any ideas as to the original HD curve the big black box gives you??

What's the part number of the OEM ignition you are asking about?

1340evo

August 09, 2021, 02:20:44 PM #19 Last Edit: August 09, 2021, 02:28:06 PM by 1340evo
Quote from: 14Frisco on August 09, 2021, 10:20:39 AM
Quote from: 1340evo on August 09, 2021, 07:27:12 AM
Does anyone have any ideas as to the original HD curve the big black box gives you??

What's the part number of the OEM ignition you are asking about?

its hard to read... 1989 FXR

think it says... 3241431 A or 4?   0189

Looking on e-bay there are a lot 32414-84A which I got to say it could be ..

Burnout

August 09, 2021, 03:40:24 PM #20 Last Edit: August 09, 2021, 03:51:53 PM by Burnout
I put a police module on mine.
Different spark curve and higher rev limit.
They don't call me Ironhead Rick just because I'm "hard headed"

14Frisco

Quote from: 1340evo on August 09, 2021, 02:20:44 PM
its hard to read... 1989 FXR

think it says... 3241431 A or 4?   0189

Looking on e-bay there are a lot 32414-84A which I got to say it could be ..

According to the parts manual 1989 FXR came w/ 32405-88A.  Regardless, I don't have the curves for neither the 32405-88A nor a 32414-xx, sorry.

1340evo

Ok, thanks.. typically any idea if they differ from the picture shown above at all?.. not sure if the HD unit gives you a 10 point curve for example or if they are as basic as the cones shown for the Ultima with only a couple of points?

Scotty

Quote from: 1340evo on August 10, 2021, 04:56:12 AM
Ok, thanks.. typically any idea if they differ from the picture shown above at all?.. not sure if the HD unit gives you a 10 point curve for example or if they are as basic as the cones shown for the Ultima with only a couple of points?

Typically the Ultima or Dynatek unit curve 1 has more advance than curve 2 and curve 2 is basically pretty much what the stock ignition curve is.
Go with curve 1 and if you have ping try curve 2 and it will probably be alright.

1340evo

Just been for a run, can't open it up fully yet as still running in... appears okay but not sure its any better that the HD module? will see once we can get going propper.

If you do get 'Ping' can you hear it over loud pipes okay? there is something on acceleration and load, but not sure its ping...