are u sure you need only 4" ??? i use 10" (inch) each. :D its bloody hard to cut so do make sure you have the correct measurement. :D 4" i think still can cut few pcs out... have to measure the left over as i bend it (was giving it a try to make a spiral using the rod but failed as its was too hard to bend even when i heat it up until its HOT red).
And ya, u should build the PWM if u know how, then i will buy from u! hehe. i lazy to do that for the time being....
more update on my setup...
Dilute the water futher as i am previously running more then 25A of current (as my 20A kept blowing and once i switch to 25A it was OK). So i dilute the water futher (to get the baking soda more thinner ,in laymen term) so now i throw in a 15A fuse and its run well. Lesser gas but alot more cooler. Infact the wiring running at 25A (or between 20A to 25A) is quite hot to the touch. So abit worried about it getting fried or caught fire. But running at 15A (or below) is much safer (in my opinion). The gas output is significant.... something like water boiling bubble.
As far as FC , i only notice very slight increase probably less then 30km. My guess is the fuel injected is more (by the ecu due to the extra clean combustion caused by the hydro cell). I hate to say this , but i think EFI cars really need the EFIE module, or a SAFC to tune down the fuel injected.
Power wise, I hate to say, the car feels heavier then when running the hydro cell (very big reason is the extra fuel injected causing too rich condition thus giving bad power output). Dunno until i hook up a O2 monitor to check the ratio. But abit lazy on the CNY holiday mood now.. wahhahahaaaaaaa...... :P
