So I had the Fat Bob dyno tuned the other day.

Came in at 84HP and 101TQ

The shop told me that it produced the best result they had seen for a non cammed bike.

What do ya reckon?

 

 yep stock 103

Stock header with cat removed

V&H 3" Slashcut Slipons

V&H Vo2 intake

PCV

good out come, bet it rides better all round after the tune. I suspect the shop wants you to feel good or they do many 103 stg 1, that is about normal for that set up.

 Interesting.  I just got mine tuned and got 80hp and 100fp out of my stock 103 with SE Race tuner, heavy breather and D&D Fatcats.  Similar numbers but the curves are pretty different.  Blue is baseline run before the tune, red is after the tune...

 Cam is next 

dyno sheets are different norm yours goes up in 10hp increments jimD is in 20 but looks similar to me

Bugger me, I did not notice that...

Yes its interesting to see what a similar bike dynos like.

The biggest difference is probably down to the pipe with the FatCat being a 2 into 1 its got a bit more meat down low by the look of it but seems to drop off faster than my setup. Is this the norm for a 2into 1?

I read that the D&D fatCat really wakes up with a good cam installed!

The stock header 2 into 1 into 2 makes good power (with the cat out) and sounds the business with free flowing mufflers. If your'e on a budget (as I am)  its a good option.
I didn't care for the sound of the Vance & Hines slipons with the cat still in.

 

 

 

with you vast knowledge of tuning and your new member attitude I am sure you won't be missed

We are all so much better off with him on this site ........

My old busa could do 300kph+ so my harley don't need a tune....

Anywho, it's all in the tune. A good tuner can make or break a bike. Seems like okay results up the top, be nice to see the difference with a cam added.

rocky many of the tuning modules will be good enough for just pipes and A/C so no real need for the dyno if you put in the time doing your auto tunes.

Get on a japper any japper and stop the revs at 6000 and see how fun they are to ride. No good comparing a HD with any other bike they are completely different animals and almost every regard.
But don't under estimate the power potential of a HD. Just go out to the strip and have a look at what can be achieved on a street ride able HD, Busa killing potential

 For me its not about how fast you go but how good it feels while your doing it!

A good running bike = "MORE SMILES PER MILE" 

If youre lucky enough to get it running nice without a tuner then count yourself lucky - but then again you won't ever know how much better it might have run with some tuning.......

Mine needed richening up quite a lot down low to eliminate pretty bad decel popping from the pretty open pipes.

Bought the bike with the dealer Stage 1 download which just did not cut it.