Wood TW6-6 TW-555 Cam Dyno Test by Fuel Moto

Honestly, that's about what I expected to see with the +4 gear. They're a little more noticible on an 88 with a smaller cam, but when the motors start getting bigger, and the torque numbers start going up, the +4 gears make less and less difference.

What I'm happy to see is how well the autotune tuned the bike relative to the dyno tune. That's probably also a testament to Fuel Motos skill in building a good base map, too. The autotune is only as good as the base map it's working from.
 
That's an apples/oranges comparison. The SE stage II figures you're referring to is the street legal kit, using a very restrictive street legal exhaust complete with quiet mufflers and a catalytic converter.

Different engines, different exhaust, different dyno, different dyno tuner, etc, etc, etc.

However, it does beg the question...

Jamie, since you've got the bike up on the dyno anyway, could you be persuaded to swap in a set of se255s to see how they compare? (I might even have a set in my garage I could send your way)
 
boogaloodude yes I know but I was looking into going 103 but after seeing those #'s I will just do a cam instead. And that reference was for a SE "race use only" set up. But I do want to do a 103 stage IV down the road.
 
You were quoting the figures at 6000 as being 65 hp/75 torque. I found a "dyno" comparison chart with those figures on page 14, in the street legal section. On page 26, in the "race use" section, the "dyno" chart shows the figures maybe 4 hp and 4 ft/lbs higher. Not that I put a whole lot of faith in those charts, they're more like a cartoon of a dyno chart. Maybe I'm looking at a different page than you were. What page is the chart you mention on?

Of course, if you're seriously considering a stage IV upgrade, you're way beyond worrying about the difference between 65 and 69 hp.
 
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