a few things... what kind of dyno?
and quite possibly b/c of high miles and bad break in(by the book) you could be low on compression and time for a rebuild, pistons, rings, bottom end... do a simple compression check to begin with if you suspect problems with the bike.. otherwise need info on type of dyno... good luck
My 02 made 144 stock as a rock, filter, pipe, PC3 made 153 rear wheel - 05 Yam R1's ran on same dyno hours b4 made 152.
The 03 model did not have any significant increase in power so you've either got something wrong somewhere. Compression should not be down after so few miles, but could be.
I'd look at cam timing, mapping, injector's or similar.
Also bear in mind that some bikes run as much as 6-8 HP different, same models. Production tolerances are somewhat....not all that accurate on some bikes.....
Seeing as though your air / fuel is good, i'd look at cam timing first, valve clearances or something along those lines - but something is definate - not quite right.....
How much does you mate pull on you thru the gears ??
My K3 made 153-154 SAE with just a slip-on, BMC race, PAIR mod and TRE, on two different dynos. The second one was brand new top of the line dyno-jet (don't know the model number)
A bike with a full hindle will make more than me! I think on another dyno you would read 5-7 HP higher!!! I just pu ton a full hindle and after i get my short stacks in im going to get a Yosh box tune and dyno again, so we'll see. But like i said, i think your dyno reads low!
Ok did a compression check according to Suzuki. Warmed up engine . Gauge read 180F. Cranked for max comp # as per manual.
Is it possible #4 was "washed down" with fuel to create the low comp #? Was going to run bike again and try #4 again but I'm too pissed off!
On another note,would loss of packing in the muffler affect exhaust back pressures decreasing power eventhough I have a full exhaust?
New version of winpep on that DJ dyno... so that is not the case....... 143 is just a tad bit low for a bike with your mods...... whu operators plot "speed" is just beyond me, it's just about worthless (unless tuning for time-to-speed points).