My small changes helped my gas mileage. Screw 26mpg, I overshot it like crazy.
 

Things I've changed....
1)Drive 55mph on all freeways with cruise control
2)Coasted as much as possible
3)Tires inflated to 35psi
4)Took out spare and jack

So I fueled up, my odometer was at 404 miles.
The gauge on the pump showed 14.069G

So that equals to 28.71MPG!!!!!!!!!!!!!!

That cardboard trick is so going in. The cartboard guys said they warm up faster so my warm up time will be reduced and I'll go faster in closed loop mode and spend less gas.

My goal now is 30mpg

BTW this 28.71mpg was 60% freeway and 40% city.

Good to hear, I hope you
 

Good to hear, I hope you keep getting good results. Might wanna try some fuel additives, they seem to work for a lot of people, acetone's not working for me, but I think it might have to do with my single injector versus many injectors, but I dunno, I'll test when I have an injector per cylinder and see the difference.

fuel additives don't really
 

fuel additives don't really work for my car. I tried them and nothing changed. I'm running out of options to do on my car. I think the hydrogen system will have to go in. But there is so much crap involved in it. You guys need to help me with the research. I searched up the wazoo with it. I'm sure if we put our research together we will make a product that has better durability and less hazard.

Yeah, some cars are like
 

Yeah, some cars are like that, nothing helps. In any case, I just messaged flatland on aim and he said he'd work on an update, so I'll be keen for that. The one on ebay that's 100 bucks and is a sealed metal container seems to be what we want to emulate, just cheaper.

I sent him a PM and there
 

I sent him a PM and there was no response. The reasult I want is If I turn my car off then the system stops producing hydrogen. But that can only be done through the electric method but all it does is fizzle. I want it to bubble like the chemical reaction. I also want the oxygen and the hydrogen separated. There are lots of stuff that needs improvement.