Hi Roland
I agree with all 3 points. Let me deal with point 1 last and start with
2 This will in dead cause a considerable vacuum in the HHO cell.
There mas bean a lot said about the prows and cons of this issue and this is only my take on the mater. I personally don't believe that a vacuum will give
you more production . How can it, It is an electrical proses and I don't think sucking on it will make the atoms move any faster. lol But I like to run a
vacuum to all of my cells for 2 reasons. 1 if there are any leaks in the cell
then running it in a vacuum means the leak is INTO the cell and not out of it. 2 This is a HOD system , at any given moment there is only a small amount of hho in the system and running a vacuum ensures that it is all going into the motor and not pooling anywhere else.
3 This restriction does seam to fool the computer into thinking it is at a higher altitude and therefore reduce the fuel. As to why and how ??? I will leave to much smarter minds than mine to nut out. lol
1 As you say , it will lower the compression but I believe it will only be felt
or noticed if the car is approaching the top end of its performance curve.
Let me ramble on hear and tell you why I think this.
Way back in am silly days (1973) I got involved in a fringe sport called Bath Tub Racing. Sounds quite silly and probably started out that way, but by the time I got involved it was a very strongly contested sport in dead. With
very stringent rules enforced by non smiling scrutineers and all.
Long story short every body was limited to 6 hp motors, Which at the time was Evinrude-Johnson-Mercury. And when you consider that OMC
made the first 2 and the only difference was the point and the transfers,
then you can see that we were all preity equally matched.
UNTIL Mercury came out with a new range of small hp motors.
6 hp 7.5 hp 10 hp That was it game over you just couldn't catch
the new Merck's, It was all the same motor. To make the 3 different models they had just placed a plate with a smaller hole under the carburetor to DE tune it. We were trying to keep up with a 10 hp motor
at 3/4 throttle and that was imposable. once you took out the restricted plate it was once again a 10 hp .
So all the way through is throttle range it handled like a 10 and it wasn't until it got to its top end and ran out of air it thought it was a 10 hp.
The same thing will happen in the car. you shouldn't notice any difference
unless you push it real hard and that is when you will notice it just wont quite do what it did.
But we are concerned with economy and not flat out performance.
I hope this was of some help.