Could one expect the same results if they went from the 1200C to 1250 kit?

 

They have a dyno for a 1200C too:

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!

 

Stock 2012 Iron 883 with SE A/C and Rush slip-ons with 2.00 baffles before tuned and after.

 

Very nice results for an 883, thanks for posting!

 

Ran it on the DYNO at the end of last year's riding season.

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:

 

Upgraded to SE1200 kit now with Big Radius / Hi-comp Pistons 10.5:1 and SE HP Cams / SERT Dyno Tuned..... A company called Valley Racing in Beecher re-dyno tuned what the dealership did sloppy. Dealership handed it to me at 14:1 and popping a lot on decel. Final numbers didn't really change but the power curve was much better. Final number are: 83.27 HP / 74.76 TQ with flat 13:1 AF

 

Here is my dyno sheet, 883 with s.e. 1200 kit

 

Hey hutch. Bike looks sick man, what kind of seat is that? Im diggin it.

 

Roughcraft Solo

 

pump gas 1250