TAKEGAWA HYPER CDI

STOCK CDI REMOVAL

Stock CDI Box in Holder

Stock CDI Out of Frame

Stock CDI Disconnected

TAKEGAWA CDI INSTALLATION

Takegawa CDI Connected

Takegawa CDI Installed

Wires Secured With Cables Ties

Stock CDI Female Connectors

Stock CDI With Rubber Holder

Well the time has finally come to try using a performance CDI ignition on the CRF50. The first reason is that the bike has always had a slight bog if throttle was applied quickly from a standing start (much of which was corrected by richening the mixture-details in a future article). And also I wanted to see if the air filter and pipe modifications could take advantage of removing the stock rev limit of 9800rpm.

INSTALLATION: Remove the seat/shroud/rear fender assembly by removing the two tank screws and plastic pins, and the rear seat pan screws. Locate the stock CDI and lift it straight up off of the retaining post. The black rubber mount surrounding the CDI comes of with it. Press the small retaining clips on the white plastic plugs down and disconnect the wire harness from the CDI unit. Remove the Rubber mount from the stock CDI and place it on the new Takegawa CDI.

Attach the wire harness male connectors to the Takegawa CDI connector (note that it differs from stock in that it’s plug is on the end of short wires).

Place the CDI back into the white plastic mounting plate just like the stock CDI was installed. Tuck the CDI wires and harness under the white crosse support and secure wires with a couple of cable ties.

TEST AND REVIEW: So how’d it work? It did slightly improve first gear starts. Although all bog is not gone completely it did help throttle response. The bike did seem to rev quicker and overall the performance seemed a little snappier across the power band. During our testing Ben said he feels like it gives him a definite power boost and much smoother throttle roll on. The bike also did rev to a higher rpm but in a controlled gradual manner. Just because the rev limiter is gone you still have to have the horsepower to exceed it quickly and even with our power enhancing mods (pipe and air filter) it took some time to rev past the stock limit. It did improve top end revs and speed just not in a drastic way.

Overall we were happy with this modification. For around $60 it is worthwhile and does give a performance boost in a few areas if not a massive boost. At least in my opinion it did do something and wasn’t just a waste of money. I don’t know if it would be worth putting on a stock bike. I got the CDI from Pit Posse but many people sell it.

If you have any questions you can e-mail me and I’ll try to help you out.