thanks for all the help guys, I ha just e mailed dyno tune to see if they will ship overseas.

I found a company offering a similar set up in the Uk but its around £180 which is a fair bit more so hopfullly dyno tune will ship to me.

 

Do air/fuel sensors work for 2-strokes or only 4?

 

Not to my knowledge. I cant ever remember seeing a two stroke with an O2 sensor. I think the oil in the fuel would foul the sensor.

 

i got a reply from dyno tune they have a Uk supplier

And they suggested using a single wire sensor and narrow band gauge all this comes to around £93
So thats ok but is a single wire non heated sensor ok they said it would be but only after the exaust is up to temp, As for the wide band gauge it costs £340 so i definatly dont want it.

Any advice ?

 

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Go with the single wire narrow band, just make sure you let the sensor warm up to operating temp and youll be fine. I dont think anybody here is running anything different. I would like to know if they are !

 

I'm running a 3 wire narrow band, it still takes about a minute befor its up to temp, I think a single wire sensor would be good to go within 5 minutes. I need the 3 wire because alky has such a cooling effect that any excess blowing out the chamber will affect the reading of the O2 sensor.

Why is dyno tune suggesting running a non-heated instead sensor vs. a heated unit?

 

Ok

thanks for clearing that up, i didnt realise you used the heated one due to the alchahol.

i will go for the single wire narrow band and weld the boss on just after the collector.

thanks for your help with this one guys
I will post how far out my jetting was once i get it sorted.

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