MCX Running Rich???

[Down]

My buddy bought a used Nytro with a 240 MCX kit on it. He took it out today (Northwest Iowa) for a test ride and he says its running around 10 on the air/fuel guage @ 12 lbs. That seems to be a little rich doesn't it? He's not sure if that is fine or if something isn't quite right and neither am I. He just installed a new boost controller today. My understanding is that it was an early MCX kit (2008) and has the external fuel pump on it. He was told it is a 240 kit and not a 270 but who knows??

Is something wrong or is that to be expected? What should he look into?

Thanks.

 

[dexter]

270 kit turn it up. the early kit came with everything, capable of 18 lbs. run good fuel though

 

[Tuesday]

270 kit turn it up. the early kit came with everything, capable of 18 lbs. run good fuel though

Yep, same as mine.

 

[TBird]

Turning boost up doesen't solve the rich condition @ 12 lbs tho,
Maybe a little upgrade of the fuel map and turning up the boost is the ticket? .

 

[Down]

Upgrade Fuel Map?

TBird,

How would he go about upgrading the fuel map? I assume he could just send it somewhere to get it reprogrammed? Is there a place in the US that can do this or does he have to send it back to MCX?

Thanks for the help guys.

 

[Turblue]

LIEPHIEMER YAMAHA in Butte Montana mcx dealer for the US

 

[TBird]

Yepp, should be fast return,
If my memory serves me right the early map was really rich, so with a reprogram the issue should be solved,
anyone with first hand experience that can add some light?

 

[Tarzannr1]

Yes i recommend you to send it in and get a new 270 map then you can ask them for a map to 280 hp but remember to buy some gooood fuel

 

[Down]

I'll pass the info along. Thanks guys.