After my intial break in period of about 100 miles I threw a PC5 and a Two sisters black series slip-on on my '15 SP
We dyno tuned it at that time and im not one for stupid numbers, I want a near perfect A/F ratio along with rideability. With those two items done the bike made 152 rwhp at 10,200 rpm with a max of 154 at 12,800 rpm. Not too shabby since its got lots of midrange punch to it.
Fast forward to a few weeks ago.......
I ordered the Euro spec velocity stacks for the SP, installed a K&N filter and put the SFM on top of the PC5. Also di the PAIR mod in both the airbox and valve cover.
Today we put it on the dyno to see what changed and sort it out. The first initial pull showed 148 rwhp and 72 ft lbs............seriously
fiddle farted with it on the PC5 side and left the SFM alone. Got it up to 151 rwhp and 74 ft lbs. added 5% to the SFM between 8k and 10k rpms to get it up to a good A/F ratio and managed 153 rwhp and 77 ft lbs
Needless to say I don't think the $135 velocity stacks, $235 SFM and the $80 dollar filter are worth a dime. I was pretty shocked to see I lost hp by trying to get it to breath more
Not sure if my bike was built on Friday or what, but those numbers are somewhat on the kick in the dick side. I was hoping to maybe bump 160 but it looks like this thing just isn't going to do it.........oh well
and yes.........same dyno, practically same atmospheric conditions and same operator
So, is it just me or are these numbers just a tad on the disappointing side?
We dyno tuned it at that time and im not one for stupid numbers, I want a near perfect A/F ratio along with rideability. With those two items done the bike made 152 rwhp at 10,200 rpm with a max of 154 at 12,800 rpm. Not too shabby since its got lots of midrange punch to it.
Fast forward to a few weeks ago.......
I ordered the Euro spec velocity stacks for the SP, installed a K&N filter and put the SFM on top of the PC5. Also di the PAIR mod in both the airbox and valve cover.
Today we put it on the dyno to see what changed and sort it out. The first initial pull showed 148 rwhp and 72 ft lbs............seriously
fiddle farted with it on the PC5 side and left the SFM alone. Got it up to 151 rwhp and 74 ft lbs. added 5% to the SFM between 8k and 10k rpms to get it up to a good A/F ratio and managed 153 rwhp and 77 ft lbs
Needless to say I don't think the $135 velocity stacks, $235 SFM and the $80 dollar filter are worth a dime. I was pretty shocked to see I lost hp by trying to get it to breath more
Not sure if my bike was built on Friday or what, but those numbers are somewhat on the kick in the dick side. I was hoping to maybe bump 160 but it looks like this thing just isn't going to do it.........oh well
and yes.........same dyno, practically same atmospheric conditions and same operator
So, is it just me or are these numbers just a tad on the disappointing side?