When I use to have my s2000, I was going to boost it. Bought my turbo kit and all but didn’t want it in til I had something to monitor boost and air fuel ratio. There wasn’t a gauge out there that looked stockish(cop friendly) and to my taste. I did like the gauge by plx devices(touch screen combo gauge digital screen DM-100) however it wasn’t going to be out this first quarter this year and I dont think it support 4 bar map sensors so I opted to make my own. With a little help from Arduino, I created my gauge to read from the omni 4 bar maps sensor (also hondata 4 bar) and the factory stock Honda map sensor should I need to switch between sensors for testing. The Air Fuel was meant to be fed in from an LC-1 through the analog 0-5v output calibrated between 8-22AFR. This was simple project however it did take about a year because I was busy working on other projects. I finally went back to the drawing board with this project about 2 weeks ago and have it working in the simplest form.
Map Sensor : Omni 4 bar, Hondata 4 bar, Stock Honda Map Sensor ( other can be used as well like the 3 bar GM, AEM 5 bar, AEM 3.5 bar, etc) I have them programmed and tested already.
Air Fuel Ratio: Uses the LC-1 as an input to feed to the screen
Menu: Currently limited to backlight adjustment and boost warning
The Tutorial will be added in later once I write up the “how to”. This should make it easy for anyone to have a DIY boost/afr gauge at a fraction of the cost. It’s pretty accurate as well.