alright here you go i live in pa dyno my bike yesterday playing with it for 2 hours here is what i got 27.13 horsepower with perfect air fuel and nice even curve with this setup

clip on second notch with 2 spacers on top and one under
fuel screw at 3 turns
main jet 128
pilot jet 38
snorkel in
2 brothers pipe

 

Well done.
Very good number.

I only got 26 with a 300 kit, pumper, BG full system.

 

27 ponies with stock jug? more details pls........

 

what more do you want to know leave me know

 

I have a few questions for curiousity sake

1. What did you use for the rear tire?
2. What was the air temp?
3. What altitude where you at?

 

Also, what bike?

 

09 klx250s rear tire avon roadrider air temp not sure our dyno room is fai weather not to hot i live in pa

 

Stock header pipe?

 

yeah the smoother the rear tire is, the better it hooks-up with the dyno's drum. I did a dyno run with my D-tracker in the winter time, when it was still 250cc, with a perfectly jetted pumper carb, aftermarket pipe and enlarged airbox hole. It peaked at 28hp. Finding that number hard to accept, I went to a different dyno and it peaked at nearly 30!

I know there can be different results between different dyno's, but I also think that there is enough variation in the kawi's parts manufacturing that you get some pretty wide variations in engine HP. That's the only thing I can think of when I try to answer why I've personally seen two similarly setup KLX's have like a 3-4hp split on the same dyno.

 

is the 27 corrected or uncorrected. this may explain something.