CRF300L Rally Power Mod 4 is the 550 Performance ECU install and review. As good as the piggyback controller upgrade was rumor has it, the 550 Performance ECU is even better. I will walk you through the installation then after some testing it should be clear if the CRF300L Rally Power Mod 4 is better than the CRF300L Rally Power Mod 3 (EJK controller).

From the factory, the CRF300L Rally is down on power and it needs power mods to reach its full potential. The ECU is a quick and affordable way to boost power and performance. This sure-fire Honda 300 rally mod will get this bike into the fun zone.

This 550 Performance ECU can be found at the following link:
https://www.550performance.com/collec...

As always you can find this info and more at dualsportgarage.com
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Thanks for watching!

00:00 Introduction
01:06 ECU Options
02:06 Bodywork removal
03:48 ECU removal
04:28 New Unit install
06:38 Performance recap
08:20 Summary
08:54 Outro