How do I make my 03 Raptor beat a piped 450? I currently am running yoshi full exhaust and k&n. Any idea on my current horsepower?

 

well to start. are you currently losing?....by how much?...whats the distance?

 

Have you raced a piped 450 and did you lose?

 

He should be taking a stock yfz with that setup....

 

Ask for a head start?

 

it already is faster

 

See your other thread.

A 686 will beat a piped YFZ 450.

Riding my Wife's mild 686 I lost to my Buddy's Wife on Her YFZ450 by a 1/2 length but, I am about 75 lbs heavier than her (150# vs. 225#).

Once I got a 200# rider on her quad I didn't have any problems with the YFZ.

She has a Full Yoshi Titanium pipe (4 lb. pipe vs. 14 lb stock pipe.)

She was losing to me until I re-jetted her quad then she was able to get a couple more lengths.

If the guy your are racing is over 200# you shouldn't have a problem on a long hill. The YFZ doesn't have the torque to hold third gear up some of the steeper sand hills.

 

Thanks dune me. Mine is a stock bore though. I don't know what the jets are because i just bought it and it came with the mods already done. I am supposed to race one this weekend. No hills prob just a straightaway down a dirt road.

 

I never run any lower than 3rd and I run some long/steep hills. My testing was unfortunately cut short, but I'm thinking I may be able to take the valley @ Sand Mountain (Utah) in 4th w/ a 13/40 setup. I ran my fastest ever w/ 14-40 & 21s. The next morning I was going to put a 13 on the front, but...

selector

 

How much do you weigh?