Raptor Forum banner
1 - 8 of 8 Posts

·
Registered
Joined
·
2,062 Posts
I'm not familiar with the brand but if it is in the family of CDIs that only raise the rev limiter....the only thing they are good for is ventilating your cases when the rod comes out the side of them.

The additional RPMs is hell on the valvetrain and connecting rod, not to mention that unless you have a purpose built motor, your power has fallen off well before the stock rev limiter.
 

·
Registered
Joined
·
28 Posts
Discussion Starter · #4 ·
well all i got done is just a white brothers e2 slip on. im going to get a fmf power bomb hearer, an air filter. i was reading on the big guns its not just a make the rev limiter higher it inproves the proformace through all rpm ranges. it gave a 4 hp gain at stock and with pipe header and air filter it was a 6 hp gain. ive see the effects on a 300ex it was a good add on.
 

·
Super Moderator
Joined
·
17,063 Posts
Big difference from one bike to the next, but I can assure you no CDI provides those types of hp increases on any 660 build that I've ever seen.

What the Big Gun and a lot of other ProCom based CDIs do is advance (or is it retard?) the timing and that's where the claimed power increase is supposed to come from. In practice they're really not a worthwhile upgrade unless you've done everything else and even then the results are negligible.
 

·
Registered
Joined
·
177 Posts
i have a yoshi pipe and header, k & n witrh adapter and a dynatek cdi, it made a noticable differance, it pulls alot harder put the rev limiter at 10000 rpms instead of the stock 9000 and there is no reverse revlimiter, made a huge differamce in my opinion
 

·
Registered
Joined
·
1,568 Posts
coalshedracing posted dyno runs with the dynatek programmeable cdi, with 4 different curves, one was a stock curve...the biggest difference was 1hp and some change between the highest and lowest readings. If you want to run to 10000rpm with a stock rod it won't last long, neither will the case. The dyna's can be programmed to let it rev more freely, but nothing worthy of hp or torque.
 
1 - 8 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top