Advance Curves!!

vmax-540 · Post by **vmax-540** » Mon Mar 07, 2011 5:23 pm

I have seen a lot of people asking which CDI is the best one to run especially in the 81 SRX, well I made a Excel spread sheet graph, taken right from Yamaha service manuals showing the three different advance curves that are in the different CDI's.
The 81 is the original 81 CDI, and the 82 is the one that was destined for the 82 500 and also the one that was used on the 81 Update, the 83 is the one used in the Vmax 540. I hope this helps anyone that had question on the CDI's.
As you can see the 82 & 83 are about the same only different by 1 degree in the midrange, and I wouldn't be surprised if they were exactly the same.