[Richard L]

Of cause I remembered the project, It was quite advanced at the time, there was hardly any other WI makers existed.

My first question will be, is the system tuned before applying water injection and left alone or will you be tuning it after the WI install?

My anwer will be much much more accurate based on your anwer above, anyway I have a go...

1) We have an option of a aquatec pump, workong in bypass mode, no more impact noises.
2) I think looking at your setup, you need a at least a 1mm jet, expecting you will have around 500-550HP. This based on M50:W50 mix.
3) Depend on below:
- 100% water ........ 10-15% ratio to fuel
- M50:W50 ........ 15-20% ratio to fuel
- M100 ........... 29-25% to fuel
(add up up you fuel injectors)
4) What is the Mehtanol % on your screen washer fluid - recalculate based on the above answer.
5) We cannot supply a 2d system with a shurflo pump - It is possble be messy because I don't have a precise instriction how that can be done. If yopu can live with the HFS-6, it will be ideal because fuel flow signal is scalable by the user.
6) The HFS-6 can only be triggered by IDC but you can offset the flow with the pressure signal.

Richard