Fuel and NO2 tuning

[stoutner]

I just ordered my boondocker NO2 kit for my Apex. I also ordered seperately an O2 sensor and fuel/air gauge. Is this how you guys are tuning fuel?

What fuel/air ratios are optimum on an otherwise stock Apex?

Should you try to keep the ratio the same throughout RPM range and should it be the same on the Nos as off?

Any other tuning/performance tips for an Apex would be appreciated.

 

[87gtNOS]

I hope you ordered a 'WIDEBAND' O2 setup....

 

[yamahajunkie]

guages lie, pistons and plugs tell the truth. i'd go by piston wash.

 

[87gtNOS]

Piston wash on a 4 stroke?

 

[yamahajunkie]

well not wash but carbon from over fueling=rich. totally blue on the band of the plug or round band at the tip=lean. over fueling will most will give you a bog just lean it out from there.

 

[stoutner]

Gees, I'll have to check to see if it is a wideband sensor.

What is the difference? Will a narror band work?

 

[stoutner]

Yes, I can check the plugs but it is a pain in the #*$&@ to check the plugs every time I make a small fuel adjustment.

You can't exactly get at the plugs very easily.