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View Full Version : 2007 103" Dyno tune results


loader
03-14-2007, 10:00 PM
Hi Mike,
Long time lurker here.
I have put the "street legal" 103inch upgrade on my 2007 FLSTF and here are the Dyno results:
As you know the kit uses the 255cams and flat top pistons.
Are these the results I should have expected?
I though the HP would have followed the TQ curve more...
If these are typical results and the dyno house did the best they could what could I do to improve HP/TQ without pulling the jugs again?
Head work, cams, and throttle body... AHHH
Thanks !!
Final run in blue with 84.48HP and 102.21TQ

Mike
03-14-2007, 10:00 PM
As SAE numbers the torque is just what would be expected with the 255 cams (also assuming 4th gear runs). The dip at 2.5 is typicall for the RH 2-1's. I would have expected a little higher hp numbers based on that pipe but the 255 cams may be shutting the motor down. A cam change would be the first recommendation but with that the torque dip may become more pronounced. The Wood TW8 or the new Red Shift 575 are good choices for your compression. Head work and a larger throttlebody would compliment the cam change but I would not do these without the cam change. Was this tuned with a PC or SERT (just curious)? With a .97, correction the actual numbers will be a little higher.
Mike

loader
03-15-2007, 10:00 PM
wOw great info!
It was tuned with a SERT.
This has me thinking where is the best place to start. (besides dropping the bike off with you guys!) Which might not be a bad idea... San Diego to Oregon, long haul.
I guess what I'm looking for is for the bike to just have that solid pull through the entire RPM range.
Not familiar with the .97 correction, but must be a tweak in the tune of course. Wish I could implement it.
Searching for info on the cams now. I no likey the dip in the curve either.
Thanks!!

loader
03-15-2007, 10:00 PM
OK - Thought I would post a pic of the ride:

Mike
03-15-2007, 10:00 PM
Bike looks great!! We have guys ship bikes to us from all over, I'm always humbled by that. We do have to be careful of Ca. bikes though. The torque dip will be less with a little more backpressure in the exhaust (less hp). As mentioned, cams with more overlap (more hp) may increase the dip. The .97 is the correction for the invironment conditions at the time of dyno'ing. This allow's for more accurate comparisons of dyno charts without the influence of temperature, humidity, altittude, etc.
Mike