Yamaha YZ 250 EFI

**oldskool** · 26th June 2013, 19:00

Originally Posted by Flettner

First time on a dyno

Heya,
Great stuff!!
How did the readings compare to a normally aspirated YZ250 on the same dyno?
Was it an inertia drum or did you have some sort of calibrated mechanical load on it?
What gear was it in when the reading was grabbed?

**Flettner** · 30th June 2013, 16:23

EFI Kawasaki Bighorn dyno run and tuning. Air cooled 350cc running on ethanol. Link injection controller. Took a few runs to get it right.

**Flettner** · 14th July 2013, 12:21

Took the EFI YZ250 to the Epic Events ride Taupo / Napier road yesterday, in the rain. Performed flawlessly though out the whole day. Tuned to give smooth broad power, best for these conditions. It's a lot of fun to ride, this is the first ever "Event" it's been to.

**FlangMasterJ** · 15th July 2013, 00:42

This is great! Well done guys.

**Flettner** · 26th July 2013, 15:05

Both EFI bikes will be at Maddix Park in Tauranga this Saturday afternoon.

**fridayflash** · 26th July 2013, 17:27

very interesting stuff, would love to see the run, kwacka looks and sounds great!

**cheese** · 26th July 2013, 20:32

Dam it, I'm going to Pirini.....

**Flettner** · 3rd August 2013, 10:11

This EFI YZ is available to view at Blackwood Yamaha, Cambridge, any time during opening hours, I'm sure Wayne would like to have a chat about it's construction / performance. The bike will be at Epic Events trail ride next weekend for more testing / tuning.