Aftermarket CDI info needed

[Deacon fmxer]

Do "race" CDIs actully work? I got told that there a waste of time. But I've been told that they Will improve performace let the engine rev out futher? Is this true?? Are they just a plug and play or is there tuning involved?

Thanks

 

[thump*140]

they do work to a point... the lil blue boxes, with the red LED light to show your bike is sparking isnt a bad one...
They are a plug and play unit, and they will raise the rev limit a little bit, and i've found they kinda clean up the bottom end...
Dont expect epic changes though...

 

[cozza123]

wat bike ur plannin to put one on?
the china ones on ebay say high performance but there just stock ones with a colourful case on it

 

[Deacon fmxer]

On a yx 140. Are the changes noticeable tho???

 

[sean01]

some/most provide more kick back too, as they advance the timing more.

also to clear up something, no chinese cdi apart from maybe the lifan outer rotor cdi(which i doubt) has a rev limiter..

the noise you hear when you think its on the rev limiter is actually valve bounce...

 

[gtrtorana]

I have recently purchased 2 posh type CDI's off ebay for $8 each and I have fitted them to my bikes. I am taking both away next weekend and will let you know if I find any difference from the stock ones. I don't expect to much improvement but at the very least, I will have the original CDI as a spare in my tool box as made in china can mean FORD. (fix or repair daily)

 

[----M@TT----]

So r they reccomended or dont worry about it?

 

[sean01]

personal preference. there cheap so try one

 

[----M@TT----]

Yep will do.