There are various thoughts about the ideal place to introduce HHO into the system.

Since mine is a diesel turbo it must be done before the turbo. My thoughts were to introduce it a long way before, in fact just after the filter so that it got a thorough mixing with the incoming air. I then read, I think here, that the residual KOH caused the turbo fan to break up. In view of that I decided to inject it pre filter so that any KOH remaining could be caught by the filter.

Anyone any thoughts on this?