50 Caliber RacingCDI Ignition REV Box - Compatible with Yamaha Rhino 660cc, Grizzly 660cc, Chinese 700cc Rhino Clone Models [5302]

I could not be more pleased. Installed in minutes. Increased rpm limits forward and reverse. My machine with a dg pipe and k&n filter definitely woke up . I had a mid range stumbling problem that I assumed was the reverse rpm sensor. That cleared right up . My machine was particularly snappy stock more so than others I have ridden. It retained that which I was concerned would be affected. Revs out cleanly but not dangerously high rpm . Lastly received sooner than promised

My Grizzly 660 would randomly start and big down. Couldn't figure out what was causing it so I finally decided to replace the ECU with this one since it had good reviews and was cheap. My 4 wheeler runs good now, haven't had any issues. Just plug and play and you're good to go

I haven’t done much more than a couple of test runs since I replaced my old black rhino cdi with this one, but I definitely noticed a difference. No more popping and throttle hesitation from the rev limiter. I haven’t been WFO yet to see top speed, but it’s night and day with throttle response and overall operation. Super easy installation. Pull battery out of the box enough to get to cdi. Mine had one 10 mm bolt holding it in. Maybe a 5 min job.

I'm not mechanical so it took me about 30 minutes to install once I realized the battery had to come out. I took it for a drive and it was able to meet all the speed limits. Way better performance and makes my Rhino more practical as a grocery getter!

Placed this product on yahama rhino 660 would only start when battery was fully charged would not start in cold weather ....I replaced with factory cdi starts right away would not recommend this cdi to anyone only bought unit because amazon recommended it. Seller would not return phone call or email...,

I got a total speed of 48mph. Now that was only a 1mph increase. No difference in top speed from what I had initially. Now it does seem to have more torque on bottom end which is nice. The rev limiter is gone which is a great feature and reverse isn't restricted by that anymore. I've never had a starting problem and that didn't seem to change. Overall not entirely happy but having the bottom end increase will be nice for the dunes, but I wanted a top speed increase and that wasn't there. And also the reverse rev limiter being gone I do love. I will continue to use for those 2 features

I just put it on I haven’t really had a chance yet to try it out it started right up so so far so good

Fast shipping, took about 10 minutes to install. Before I was topping out at about 35mph with the rev limiter kicking in at about 27mph. With my new K&N and this CDI my little 660 has come alive with speeds 45+.

Great unit, plug and play, higher top speed, higher RPMs resulting in more power and got rid of that annoying RPM governor cut out. 100% as advertised!!!

Works great

bien

don't work for long