HFS-4 Q&A, application for your engine...

[Richard L]

Originally Posted by JumpingJackson

Also, is the HFS-3 compatible with Mazdaspeed 6? What are the differences between HFS-3 and HFS-4?

On the Mazdaspeed set up, it is possible to run a port injection setup to suppliment fuel for high power applicatins. The HFS-4 can run up to 1600cc/min of methanol with bigger valve.

All you need to do it get one of this: