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[CVO ~ Senior Chief (Ret)]

When at the dealer today one of the sales peeps asked me if I had seen the dyno results for my bike from when the dealer had this bike as a demo and did the engine mods to it. These results are from the end of April and I bought the bike at the end of May.

Do these numbers sound reasonable and about right for the mods? I don't have any preconceptions of what the results should have been ... just curious. Thanks for any feedback.

Bike:
2009 FXDFSE
110 Cu
SE 259E Pro Twin Cams
D&D 2-1 Fat Cat
PC-V
Quick install pushrods

Dyno Results:
@ Temp 78.41F
@ Baro Press = 29.47 in-HG
@ Humidity = 16%
@ SAE =1.00
CF: SAE Smothing: 5

Max Power = 106.52
Max Torque = 113.92


 

[Heatwave]

When at the dealer today one of the sales peeps asked me if I had seen the dyno results for my bike from when the dealer had this bike as a demo and did the engine mods to it. These results are from the end of April and I bought the bike at the end of May.

Do these numbers sound reasonable and about right for the mods? I don't have any preconceptions of what the results should have been ... just curious. Thanks for any feedback.

Bike:
2009 FXDFSE
110 Cu
SE 259E Pro Twin Cams
D&D 2-1 Fat Cat
PC-V
Quick install pushrods

Dyno Results:
@ Temp 78.41F
@ Baro Press = 29.47 in-HG
@ Humidity = 16%
@ SAE =1.00
CF: SAE Smothing: 5

Max Power = 106.52
Max Torque = 113.92


 

Looks about right to me.

[CVO ~ Senior Chief (Ret)]

Looks about right to me.

Thanks ...

[Tabatha]

Here's my almost stock dyno run--guess yours is about right ! You have a little more mods....

[CVO ~ Senior Chief (Ret)]

Here's my almost stock dyno run--guess yours is about right ! You have a little more mods....

Thanks for posting this ...

[Heatwave]

Here's my almost stock dyno run--guess yours is about right ! You have a little more mods....

That's a pretty lean map you're running there. Your leaving a fair amount of power on the table. Probably a pretty un comfortable ride in hot weather.

[Tabatha]

Yes it WAS lean , lacked power , was no fun to ride( lacked "wheeeeee" factor).  I had it fixed and now it runs cool and has lots of "wheeeeeeeeeeeeee" !  My newest dyno on it :

[Heatwave]

Yes it WAS lean , lacked power , was no fun to ride( lacked "wheeeeee" factor).  I had it fixed and now it runs cool and has lots of "wheeeeeeeeeeeeee" !  My newest dyno on it :

That's a pretty dramtic improvement although it's impossible to tell from your new dyno if it's running lean or rich. Essentially 79/107 to 125/125 with a Woods 9B? Looks like you changed your exhaust ...again. You certainly didn't achieve those new numbers with the stock heads, throttlebody and injectors. Either you have a very "happy" dyno and dyno operator or you've made very extensive upgrades to the engine. Do you mind sharing more info?

[Tabatha]

The dyno air/fuel shows the ratios at the lower portion of the graph---it isn't very clear but mix runs about 14:1 approx..
 Yes, extensive head work has been done--including larger valves(2.120 intake),all port matched and polished. Compression is 11:1 ,as per the dyno info, S/E 10.5 to 1 pistons were used and the heads were also shaved to give the 11:1 ratio that it now has.--roller rockers were mandated due to the cam lift. I have learned a lot about these engines--thanks to Reno H.D.--because of this build. I probably wasted a lot of money by doing the various mods individually,looking at results and then building some more ! It has been an enjoyable experience as well as a learning one. I am gonna have to stop with what I have now due a distinct money shortage.
( Drawback to this engine= requires at least 98 octane fuel--it could be detuned to use 91 but it looses a bunch of power--so I get 110 octane and cut it with the 91 to get 98 octane. Its a pain but it sure runs well ! btw the throttle body is 55mm)
  Another fellow asked me if I like my bike------I better because I sure can't afford another one for a long while !

[Heatwave]

The dyno air/fuel shows the ratios at the lower portion of the graph---it isn't very clear but mix runs about 14:1 approx..
 Yes, extensive head work has been done--including larger valves(2.120 intake),all port matched and polished. Compression is 11:1 ,as per the dyno info, S/E 10.5 to 1 pistons were used and the heads were also shaved to give the 11:1 ratio that it now has.--roller rockers were mandated due to the cam lift. I have learned a lot about these engines--thanks to Reno H.D.--because of this build. I probably wasted a lot of money by doing the various mods individually,looking at results and then building some more ! It has been an enjoyable experience as well as a learning one. I am gonna have to stop with what I have now due a distinct money shortage.
( Drawback to this engine= requires at least 98 octane fuel--it could be detuned to use 91 but it looses a bunch of power--so I get 110 octane and cut it with the 91 to get 98 octane. Its a pain but it sure runs well ! btw the throttle body is 55mm)
  Another fellow asked me if I like my bike------I better because I sure can't afford another one for a long while !

Now your latest dyno makes sense. I certainly wouldn't be interested in a build that requires 98 octane. Sounds like you can never be more than a full tank away from home or wherever your 110 octane source is. That would be far too much of a PITA for my biking preferences. Sounds like you're just a single bad tank of gas away from a new engine.

[Tabatha]

Cut the compression to 10.5:1 and your problem will be solved ! 91 octane will work ! HP&TQ will be nominally less -------------