Post your Dyno results here.
2004 1200C Sportster owned by Scott Evans
HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Crush Head Porting Service
HAMMER PERFORMANCE Crush 600 Cams
Samson Caliber 2 into 1 exhaust
Mikuni HSR45 Carburetor on HAMMER Billet Intake Manifold
Daytona Twin-Tec TC88A Ignition
Comments: Scott was one of the first to receive our new 30 degree reverse dome pistons and also our billet intake manifold. This is a very strong pump gas street motor, congrats Scott!
Very nice results for an 883, thanks for posting!
2010 1200, Stock Internals, Bassani Pro-Street 2-2 Drag Pipes, Figure Machine XLFLOW-R4 Air Cleaner, PowerVision Tuner.


I only had the tech booked for an hour, by the time we got everything set-up and going I was only able to get numbers for my modified tune and the original FuelMoto tune, wasn't enough time to run the canned tune from DynoJet.
I already know the bike felt smoother and ran better after setting my VE's and playing with AFR's... The main reason I did the dyno run was to compare if there was actually any increase in power, not just drive-ability. I also wanted some numbers to compare my custom 2-1 with after I get it completed.
Results were .... The modified tune put out an AVG 70.51hp and 72.13ft-lbs vs. the original tune was AVG 69.99hp and 70.55ft-lbs.
So I actually gained 0.52hp and 1.58ft-lbs... I wasn't expecting a huge difference seeing both were running the same spark tables.
I guess the results are pretty standard, for a typical 1200 "stage 1"... The power curve was actually more linear than I had anticipated with these pipes.
It was fun to see, hopefully the 2-1 will bump the numbers up in the low-mid range.
Base FuelMoto Tune:

Modified VE's, Slight Changes in AFR:

This is a mock-up of the pipe I'm building, just waiting to get it back from the shop TIG welding it together then send it out for ceramic coating. It's a BUB Lakester 2-1 stepped header, paired with a custom reverse cone muffler from Cone Engineering.

A quick poor quality sound clip:
Last edited by hutch08; Mar 25, 2013 at 12:05 PM.
Last edited by Ironrodent; Mar 14, 2013 at 06:31 PM. Reason: add results
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