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Old 04-02-2009, 11:19 AM   #1366
Curvesurfer
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poor MPG

grrr...my bike used to get around 33mpg with hard riding, with Leo Vince pipes and jetting by the prior owner.

had it re-jet more conservatively by a local shop....got 27mpg with hard riding on a recent ride (100 miles, 3.7g). i'm over 200# and the bike frequently saw speeds >80mph, but still....a buddy with the same bike, Remus cans, and 50# lighter than I am gets close to 40mpg on the same ride.
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Old 04-02-2009, 12:11 PM   #1367
Just Bob
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Curvesurfer - Sounds like your re-jet is a miss. I run Leo cans, all -ectomies, at 5000'asl and get 35mpg and better running very hard. Would think in BARF land you would get much better.
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Old 04-02-2009, 02:29 PM   #1368
Chuckracer
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Location: Lowville, NY
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I ran a tank of gas through mine today, easy throttle, steady state riding (sport-tour mode) and saw 50 mpg. 150 miles to the pump and still not on reserve yet. Took 3.5 gallons. That's a first! I thought the reserve light had died...that's why I stopped.

(Full Akro system, stock intake, needle on third, 2 1/4 on the fuel screws, stock pilots, stock mains, 1000' asl, 20,000 miles.)
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Old 04-02-2009, 03:29 PM   #1369
TRB
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Aftermarket exhausts

A question for all the guys with aftermarket exhausts. What kind of performance gains in hp did you get with your respective exhausts? I'm still running stock on mine. Thanks.
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Old 04-02-2009, 03:33 PM   #1370
Chuckracer
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I can't help...I bought the bike fully farkled.
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Old 04-02-2009, 04:06 PM   #1371
nattyMo
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Quote:
Originally Posted by TRB
A question for all the guys with aftermarket exhausts. What kind of performance gains in hp did you get with your respective exhausts? I'm still running stock on mine. Thanks.
Exhausts alone, almost nothing except much much much less heat. Exhausts + jetting + SAS/De Can + 16t CS sprocket = Huge improvment.
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Old 04-02-2009, 04:10 PM   #1372
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Quote:
Originally Posted by TRB
A question for all the guys with aftermarket exhausts. What kind of performance gains in hp did you get with your respective exhausts? I'm still running stock on mine. Thanks.
I actually probably lost a bit on the low end. Free flowing pipes are really meant for max rpm hp. Kind of anathema to what we're after with our torque monsters and why a lot of bikes have exup exhaust valves. What I did gain was pipes that run cool and I dropped a ton of weight high off the back where you don't want it. You can use the stock pipes for boat anchors if you replace them.
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Old 04-02-2009, 07:17 PM   #1373
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Hmm...got me thinking I might just try out the stock system sometime this summer, just to feel the difference in midrange. I'll bet there is one...these pipes are HUGE at the collector.
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Old 04-02-2009, 07:27 PM   #1374
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My Leo can came with restrictors (big metal washers with 5 smallish holes in each) that I assume could be placed between the can and the pipe. I just couldn't bring myself to throttle the poor girl. At 5000' asl I want ez air both in and out.
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Old 04-03-2009, 08:40 AM   #1375
Chuckracer
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Spark arrestors, maybe?
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Old 04-03-2009, 11:27 AM   #1376
Maineroads
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Reconsmr, Have you tried the 44t sprocket? Thoughts?
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Old 04-03-2009, 12:05 PM   #1377
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Quote:
Originally Posted by Chuckracer
Spark arrestors, maybe?
Don't think so... Arrestors would be screens at the outlet. I really think the stock tuning relies on the back pressure from the stock catalytics that are that restrictive and result in the blast furnace temps of the stock pipe.
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Old 04-03-2009, 02:37 PM   #1378
DocHoliday
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Quote:
Originally Posted by Maineroads
Reconsmr, Have you tried the 44t sprocket? Thoughts?
I was wondering the same - i tried to drop him a pm earlier this week and i see he's banned. something over on the WR250 thread . . .

so i ordered the 44 on Monday and got it today. i'm doing a track day on 4/11, so i'm not going to install it till after that. i'll post a line afterwards.
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Old 04-03-2009, 03:16 PM   #1379
Maineroads
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I'm just getting mine ready for riding. Crap weather here. I've got a 42 and 44 to try. Be interesting to see which I like best. Who knows, maybe stock, but with the bad roads and short runs the 44 should be fun?
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Old 04-03-2009, 04:02 PM   #1380
Chuckracer
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I've got a 16t c/shaft and still think she's geared way too tall. Come chain and sprocket time I'm definitely going with the 44 rear. I figure if I don't like it I can always put the stock 17 back on it.
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