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Danimal 12-15-2010 11:07 AM

Removing 650 Rev Limit
Has anybody tried swaping out their 650 Prowler cdi with one from the 650 atv? I'm wondering if you would have the same performance but increased speed because the atv does not have a rev limiter.

riddler28 12-15-2010 03:57 PM

They do swap right in.
I think they still have a rev limiter just a tad higher.

The dynatek cdi is a good route to go.

Danimal 12-15-2010 08:15 PM

Thanks riddler.

How many mph would someone normally gain from a dynatek cdi?

riddler28 12-16-2010 01:33 PM

Depends on several factors.

Windshield or no windshield, Size of tires and engine mod's.

My 08 650 had a speedlimiter and a revlimiter in stock form.

I got airdam/// clutch work because I was up against the rev limit then after clutching I found out there was also a speed limiter as well.

Danimal 12-17-2010 03:34 PM

The speed limiter is news to me.

Were you able to get around the speed limiter? What speed does it cut out?

riddler28 12-18-2010 08:56 AM

Mine was cutting out @ 50mph @ 5700rpm.
After my clutch work from airdam.
I was climing up 6400 rpm b4 the work.
Then I was on a down hill and that confirmed my 50mph speedlimiter. The rpm's were way down but still would cut the engine out at 50mph.

The dynatek cdi got rid of the limiter. The only hold back now is engine power to get top speeds. Seems not to want to pull much faster than 55mph.

But I have a 4seater, 27" xtr's, windshield and real heavy.

The heavy tires killed my performance!

elmerkit 08-24-2011 05:35 PM

Just a question is there any significant changes on the motors performance?

computeruse200 08-25-2011 12:00 AM

I think they still have a rev limiter just a tad higher.

de3 11-04-2012 02:42 PM

i made the change you can swap the cdi,the one for the 650 h1 quad is the same,you will only gain 300 more rpms.i found out the hard way bought one through speedwerx,and its the same one they use on the quad,369 dollars tossed out the window. get a dynatek 8000 rpm advance timing,no reverse will blow the motor first.

de3 02-10-2013 05:17 PM

dynotek cdi
got my new dynotek cdi installed,made a difference 8000 rpm limiter did away with the reverse limiter and it advances the timing 4 degrees.when I put it in, it raised my Idle 200 rpms.also got a dyno spec sheet with is a digital cdi box for a carb motor.:)

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