Those are some massive numbers! Could that be a happy dyno?
Does it seem like you were getting wheelspin at the top end??? I can see a bunch on waves from about 8.5k rpm up?- HP and torque cross at 5250, so it's reasonably precise.
- as mentioned above, the baseline was 8hp and 3tq down from the first baseline taken two weeks ago. weather is the culprit there.
- tuning added power, but the curves are already quite smooth. not sure why; the baseline AFRs were all over the place.
If it's 6hp over the baseline, and we take the first dyno run, that's 198hp at the wheel. Still shy of 200 but whatever, even 190hp at the wheel is beyond what the 1st gen S1000RRs were laying down on average with a pipe and tune (180s).
Where I got my money's worth can't be seen on this graph - all of the part-throttle tuning. I wouldn't go so far as to say that it's as tractable as my Multistrada and that Testastretta 11, but it's remarkably close. It's exceptionally rideable in traffic, and I can sit at a stoplight without wriggling around from the heat. In fact, I'd say it feels coolest when idling at a stop.
Does it seem like you were getting wheelspin at the top end??? I can see a bunch on waves from about 8.5k rpm up?
I don't have the graph file on me at the moment, but today's baseline was significantly lower than last time - 184whp (vs 192). After about 6 hours on the dyno, we got 190whp/98tq.
Weather conditions likely played a role - we were tuning during a very heavy thunderstorm.
Anyways, much of the time was spent smoothing out low throttle response and smoothness, and getting rid of any dip in the middle. It was a successful tune on both of those counts.
Custom tuning a map to one's bike costs hundreds of dollars. But it really makes everything work together better, and that's really the bottom line. By bringing up the middle, the 8k power surge that the Termis w/stock map had has largely disappeared, and linear power curves are always more desirable in situations like on the track, or challenging twisties.
In any event, wheel horsepower over 190 is definitely next-generation superbike territory. Tuned 2015 superbikes should be posting numbers in this zone.
But they won't be coming close on the torque numbers
i agree with you, I think it could be that they use the long tubing for low RPM grunt and less back flow between pulses, then shift the gasses over to a shorter path for high RPM and less back pressure.[/URL][/IMG]
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This 1st photo certainly looks like a dual tuned length system notice the short bypass section on the 2-1 collector, 2nd pic you can just make out a servo mech' on rear bend
Does this slip on mod make the bike any more or less rideable at slow back road commuter speeds?
Bike is great above 4k, but in low gears @ 2.5k to 3.5k it feels kind of chunky. I know that's the nature of a big v-twin, but I've been able to fix that to a large degree by exhaust work & remaps on my other bikes (full termi kit on my 999 and a WASP PUK + Termi slipon on my GT).
I'm seriously considering this mod, but sound, heat, looks & top end performance are not my primary motivators. Also does disabling the servo have any affect (good or bad) on low end performance?
Forward facing blow hole looks a lil weird.