http://www.gasgasatv.com/images/yfzdyno.jpg

this link was taken from the gas gas website on their gas gas 450 vs yfz450
'comparison'

I just thought this was funny, what a load of b/s!!

 

wtf? doesnt the yz450f make way more power than that? i know its an extra 11 ccs but still...like WAY more

 

yes....it's way off. I guess it just goes to show you how much you can trust dyno's

 

ah, shall indeed it be in thy ballpark of ficticious play...or w/e im reading romeo and juliet for english...

 

i have to read that shyt to...[img]i/expressions/face-icon-small-sad.gif[/img]

anyway that was total BS
dyno said my yfz wit slip on gyt-r made 45hp

 

BS-O-METER=100 out of 10!! lol...45???

 

It's funny how GasGas flames on Yamaha when they have Yamaha to thank for their own engine.

They copied the old Yamaha YZ400F engine, bumped it up, and gave it EFI.
GasGas denies it, but every dirtbike mag in the past two years has commented on it and even found proof of it based on parts interchangability.

It's just a jap motor with a spainard twist[img]i/expressions/face-icon-small-tongue.gif[/img]

 

I don't know how you come to this veiw on the Yamaha motor being the same as a GAS GAS but you are 100% wrong, there is nothing the same. Better go back and read the articals.

 

Dyno numbers are irrelivent from one dyno to the other. The important part of this dyno reading is the fact the FMF pipe with a jet change makes what, 5-6hp more than stock? That's a good number. You also gain 1500 more useable RPM's. We all know the YFZ's haul butt stock.

 

The YFZ got the same sort of number on the HMF web site. WHY???? Simple!!!

If you read on the HMF web site they say that when they tested the YFZ, and it made the low values, it was due to the stock tires. Using dyno tires HMF says the YFZ makes 49 HP. Up from about 40HP with the stock tires.

I have seen my friends YFZ450 with a GYT-R slip-on and Airbox mods doing 44HP with knobbly tires.

HMF Web site

I hate it when other manufacturers make stupid claims, without knowing the facts. All it does it backfires in their faces and they cause their customers to get upset, due to "false" (not submitting all the facts) advertising.