ORIGINAL: flyncajun

Hi Nickolas
It`s always fun to have new toys ,,is the CDIfor everyone ,,,No
it does have a big reduction in smoke ,I find tuning it is a little different, and takes some knowledge of the motor over time to understand it.
that being said it`s not hard to run consistantly, and it has a remarkable idle. which is much better for the airframe and servo wear.

You have to understand this motor was developed to be competitive againsttheelectric setups at a world stage. low smoke and thelarge dia props,=low noise,
these are long overdue refinements.
Right now to take advantage of the lightsmoke trail, you have to run a low oil fuel which may not be available in you area.
Most guys have settled on 10% oil. "Cool power" has this as their standard Low oil fuel,,,some are still having good luck on 5% oil But these guys don`t pay for repaires and I would not recomend it for longevity reasons.
you can run the regular heli fuel on the CDI but youwill have yournormal smoke trail.

If you can afford the weight gain aprox 120 grams" once youfactor the large props " and the c/g shift involved with the new set up,
it`s for you.,,however, if you continue to run 17-12 and 18.1-10(as these are 1.6 props ),you will recieve no benifits from the 1.7 or theCDI version 1.7on smaller props.Themid range is where the 1.7 shines and the extra tourque alows you to run more dia. and pitch.
If you have the ability to run the large props" gear Clearance"you will get a much better touque curve from mid to high throttle settings supper smooth transitions,
and the large dia. props will aid in the downline breaking.
For wind, the 18-12 is the best prop in my oppinion the motor has no trouble pulling it "even on an 11pound aircraft."
and it `s super quiet ,,, also you will not have the over reving problems ,,like with the smaller props ,,, it`s just wasted energy.
hope this helps.
Bryan