I'll second what Madnss said, it's an excellent result. The numbers are really close to what I've been able to squeeze out of a 2007 when set up the same way, albeit with the Patriot exhaust. I've seen guys show enough good results out of the Big Radius that I'm starting to think I should test one.

 

I'll say my results were a combination of things. Research, listening to my tuners (J and B Performance) on parts, break in, etc. and the tuning J and B did on it. its all the right combination of parts and their know how. I was actually looking at a different exhaust, which would have cost more, and they told me the Big Radius would be the best for what I wanted to do. So with them, they could have made more $$$ off the sale, but did me right and steered me in the right direction. For that, I'll always take my bikes there!

 

First time on a dyno later I found I was running about 13,5 to 1 Fuel air ratio
it was still duel fire at that time my MAC dial back timing light would not work correctly with it I timed it by ear I was in the 42-45 degree range

When I went single fire with a crane HI4 module it liked the multi spark setting along with 30 degrees advance then at 12:1 F.A.R it came alive sorry never went back to the Dyno bot seat of the pants it was better

I shrink ported the heads running 1200 size tulip valves with 10:1 wisco pistions with sportster sport cams

 

Wow! you guys have some serious HP pumping out of these lil bikes! I have a 15' FortyEight and it has (from previous owner) Cobra slip-ons, but everything else is stock. I just saw that the stage 1 is very doable given that the Cobras are already there. looks like 10% increases in HP and TQ off the bat!!

What do you guys think about buying a used tuner.. I've seen them on offer up for like 100-150.

 

From what I've read most tuners marry themselves to the bike once you use them. If I sell mine the tuner goes with it because it's useless.

 

Dynojet can "wipe" your Power vision so it can be married to a new bike for, I believe, $219 or you can buy a tune license that is "married" to one bike but can be used with any Power Vision for the same price. It's a good deal because new Power Visions just jumped in price to right at $700 from Dynojet. You can still get them from a few sources (Hammer) for around $475, but once vendor's stock has dried up be prepared to pay big bucks for one.

 

Before & after.
S&S performance AC with stock cover
Performance ignition
re-jet factory carb
+.0.20 10.5-1 pistons
Performance valve job bee hive springs
Heads milled for quench/10.7-1 comp
Andrews N_ midrange cams. I’ll have to get #
Vintage SE pipes with lollipop inserts for torque
Good power to weight it beats 9 of 10 big HDs

 

9 out of 10 and they're getting beat by a chick, hard not to like that one

 

nice! It’s still making powa!

 

Pull it to 7k!!!!!!!