06 yzf 450 vs 06 crf dyno graphs.

Burned, I live in the Upper Peninsula of Michigan, Temps around 50-70*F and the mean elevation of the state of Michigan is 900 feet above sea level.

My bike is popping on decel and when downshifting, I didn't experence any popping or hesitation when riding though.

What do you recommend?

This is not really jetting related but when you dyno the bike can you do it with the knobby on the bike or do you change it to a street tire? My buddy has a dyno and i'd like to throw mine on there. Thanks.

Get a used street tire from the trash heap at your local shop. A knobby will slip way too much, especially on a big bike.

I'm interested in seeing some dyno graphs with different pipes on this 06 yzf450.....anyone???

I would like to see them as well.

I will be able to give you the WB Alum Pro 2 field test results after today :crazy:

right on GA426!

Would you mind telling me jetting specs for o6 yz 450f Ohio, 850-1200 elevation, summer and winter, (45-55degrees indoor) I'm guessing stock for summer and the 170-48 combo for winter?? Not to sure about air fuel screw either. Thanks in advance.

In the first place, you need to include the year and model of the bike you want info on.

Then, look Here

Dang those are close. Dosent look like there is much of a difference between the two.

I was thinking of changing my jetting. I have an 06 YZ450 in Reno, about 4500ft, pops a lot, even when messing with the fuel screw. First 4 stroke, so still learning some of the tricks.

Thanks for the help

And the winner again is.....HONDA CRF450R! :thumbsup::)

And the winner again is.....HONDA CRF450R! :thumbsup::)

you do realize the red line is the yamaha and the blue line is Honda right? Think you missed this one

Once again, Eddie is right on - I bought a leftover 06 YZ450 ($4899) a month ago in Denver and asked the shop jetting "expert" if they had jetted the bike to which he replied "oh no, Yamaha has these dialed in really close"...didn't say anything but we're at 5000' and Yamaha would have jetted the bike for sea level....took the bike around the neighbor hood and had real bad decel backfiring, which 3.5 turns out of the fuel screw didn't touch...thought maybe the pilot was partly plugged, which it wasn't and double checked the manual making sure a 42pj was stock, so I screwed in a 45pj and still had unacceptable decel back firing. Went to the same dealer to buy a 48pj....maybe even trade them the worthless stock 42pj and they laughed at me saying they wouldn't even stock a 48 since that would be too rich. So I bought a 48 elsewhere and got rid of the backfiring and went camping/riding at 7000' over Memorial day and ended up with the needle in the stock position, 48pj, 160mj, screw at 1.75 (slightly cold temps and pushing through snow drifts at 9000 - 10,000') and she's running like a bike should. Planning on a 165mj or richer and 2.0 -2.25 out on the screw for winter riding in Utah at lower elevations. Even with race gas I can't imagine the bike running right with a 42pj at sea level.Thanks Eddie for confirming what I had felt tuning by the seat of my pants....and I'm headed back to the dealer to have them explain why they let the bike out he door with a totally dry air filter when the sales price included a $100 set up fee.

you do realize the red line is the yamaha and the blue line is Honda right? Think you missed this one

I remember this, too Funny :thumbsup::):ride: :ride: :ride: :ride:

I'm headed back to the dealer to have them explain why they let the bike out he door with a totally dry air filter when the sales price included a $100 set up fee.

I picked up my new '06 on Saturday and when pulling it apart to grease everything I noticed that the front axle nut was only finger tight. Then, about an hour into a 2 1/2 hour GP on Sunday I lost all front braking. Pulled into the pits after nine miles of brake sliding into corners (I looked like a total goon and was actually laughing to myself about it) and found that the banjo bolt on the brake reservoir was loose so every time I applied the front brakes it was spitting brake fluid and eventually became empty.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now