On which dyno?
Bob's dyno is a DJ 100 updated to a 150. He does all his pulls from 7 grand to the rev limiter. I opted for his "200" stock piston kit not the "210" kit with the .425 intake cam and springs. The bike (2002 with 30,000 miles) was stock and had the original Ti-Force pipe (ceramic coated inside and out). On Bob's Dyno it made 202 with race gas and according to him tied for the most he's gotten out of that package. He claims that with the Sumo pipe it would make 5 more and be the most he's gotten from the "200" package. It made 197 on pump.
I live in CT and by the time I rode it home (180 miles) I knew the bike needed mapping. On Dyno Solutions (Danbury) 250i with no changes it made 180 SAE on pump. It was way rich almost everywhere but very close from 7,000 to 10,800.
Bob does the PAIR sucker mod as part of the package. After it was mapped I serviced the bike and found that both air box ports (the one to the crankcase and the one to the PAIR valve) were left open to atmosphere after the mod. I figured it would negate the ram air so I capped them - then back to Dyno Solutions to see if the map had changed.
It had.
After the second mapping the bike made 182 SAE corrected, 187 STD - right at the limiter.
We did some testing while on the dyno and the PAIR sucker mod is worth 2-3 horsepower. On that dyno, the strongest 1397 (cams, ported head etc) tested made 191 SAE. This 250i is apparently quite stingy.
The bike has 1,900 miles on it since the Carpenter package. Under 4,500 RPM it's softer than a stocker. Bob uses Megacycle 385/252 cams on intake & exhaust with the "200" kit (kind of big for a stock piston Busa - Dark Falcon you want to weigh in on this??), all short stacks in a modified air box (small box mod), high lobe centers and big ports so I wasn't expecting much low end torque. Power starts to come on at 5,000, hits hard at 7,000 and then hits even harder at 9,000. A pleasant surprise to me was at steady state cruise (70 MPH 6th gear) the bike returns mid to upper 40's MPG. Twist the throttle or a lot of around town, stop and go riding and the mileage plummets.
Bob has seen some cams go bad with his various packages so per his recommendation the bike idles at 1,800 - the only telltale sign that anything has been done. I'm a 56 year old gear head - it sounds WONDERFUL at that idle LOL.
Bob does his clutch mod as part of the package. The springs are on the heavy side so I went to three stock and three heavy springs - works fine. Bob also removes the thermostat. When the weather is in the 50's and 60's as it is this time of year here in CT the temp gauge would barely move off the "C" mark. We found on the DJ 250i that the map changed according to coolant temp so between the first and second dyno session I installed a new thermostat. It's fine - doesn't seem to run and different than stock temperature wise. Next summer will tell the story.
All of the work - engine assembly was perfect save for the mapping and open air box ports.
I have no leaks or issues. It starts hot or cold quicker than it did when stock. I'm very happy with the results and would use Bob again in a heartbeat. He's a great guy to deal with. If anyone wants more info feel free to email me at archieppo@comcast.net.
Chip
