Went to Perry Ga. to DC V-Twin to have my 2009 Ultra Twin Cam Dyno'd after I replaced the D&D Fat Cats with Bassani Road Rage B4 2 into 1 exhaust system.
The Bike Has the S&S 106 Big Bore Hot set with 585 Easy Start Cams; Stock Heads; Stock Throttle body; SE Chisel Air intake/Filte; 10:1 compression.
I was surprised to find out that the Bassani out performed the D&D.
Here are the charts, top is Bassani second chart is the D&D.
Thanks for looking!


Here is the old Dyno Chart with the S&S.

 

Here is the same Dyno with the SAE standard.

 

Good usable power.. Did they change the tune at all for the pipe??

 

Interesting that the graph for the D&D was taken a day after the Bassani tune. Was it completely tuned with both pipes?

 

There is no chat with the D&D, so we don't know what those numbers were.. So this cannot be a fair comparison.. The second chat he shows is with an S&S exhaust, I'm assuming?? I don't know he doesn't state that.. And that chart is 5 years older..

 

He stated that the second chart was D&D. And I missed the date- you’re right. Pure coincidence that they were both on July 28th!
Cant really compare.