At presesnt independly with WI. Just to test the unit with the WI injection on only and cross your figures that it is not blocked.

I will make provision for a WI flow sensor input. It will be so cool to trim the fuel according to the water flow rate, At present, you have a system1s - pehaps we just put in a flow sensor even it reads one flow rate? Things will be simplier when DDS3 is added so we can set up a window area to detect the correct water flow.etc.

Useful to have some MAF voltage so I can design-in the potentiometer adjustment range. I think anything from 3-4psi onwards will be fine - possible on fourth or fifth gear.

Are you referring to the second water injection filter?

Richard

Excellent water injection pictures. Ensure you use plenty of loctite on the nut.

You must have a very good camera.

Richard

No - I still haven't fitted it - it has been a bit hectic over xmas. I should have a chance to do this on Saturday.

UPDATING:

1) Build into a box about 100mm x 50mm x 25mm
2) Upon switching on (manual switch) the MAF signal go through a number of modifications.
3) The "start trimming voltage" reaches a user preset voltage (~3-5V)
4) Once the voltage is reached, the MAF voltage will start slopping downwards (less upwards).
5) The "amount" of slope is user adjustable, limited to ~20%.
6) A 0-1V Bargraph display monitor the lambda value. (splice into the existing sensor). It is not perfect but you should see rich or lean.
7) An electronic level should be included to disable the "MAF trim" should lambda fall below a preset voltage - some where between 0.4-1.0v.
8) If the lambda falls below the preset level, it will turn off the Map trim.
9) System can be triggered by the 1s's manifold pressure switch
10) System also can be triggered by the a ground signal (opposite to 1s)

Here is an attempt on a breadboard:



http://www.aquamist.co.uk/forum/gall...cb-index-s.jpg

Richard - looks very impressive, but way over my head. I'll try and get those figures to you asap. Thanks. :)

http://www.aquamist.co.uk/forum/gall...b-index-s2.jpg

It all started out as a simple MAF voltage output trimmer...

then

I thought it would be nice to see what the lambda voltage is doing at the same time....

then

Why not use the lambda voltage to put some safety control automatically. So when the lambda valve drop below a certain level (too lean), it stops trimming the MAF.

then...

Since I have a few some more processing power, why not make a mAP sensor clamp so that the ECU do not see extra boost dialled in.

then...

Making the system automatically switch in when water is being sprayed .

then.... so on

Richard

Way over my head at the mo. But i really hope it works well. It certainly looks like you have put lots of time, effort and knowledge in to the bit of kit. nice one . :D

When thing quieten down a bit herte, I will ask Mike to pay me another visit and get this unit installed.

If it works as it suppose to, I can offer this unit as a package with WI.

Richard

Sounds like a stupid question, but what will it do? My car is identical to Mike's and as you may remeber my WI is non operational at the moment until I deside what to do with it (still not sure about the intercooler spray).