Megasquirt Project, .....IT RUNS ! Options

[Michelj13]

Hi,

Although I have been a member for a while (since I purchased my 914), I have not posted much. I still love my 914 and it's is interesting how this car drives like an absolute go-cart.

Anyway, my engine is a carbed 2270 that I built up with the help of many including Jake, and I am now embarking on a Megasquirt project. As many know, megasquirt is relatively inexpensive for a programmable FI system. I find, however, that there is too much information out there that it is nothing short of confusing. I want to share my progress so that at the end of the day, some may learn and may become less intimidated. Hopefully I will be successful....we'll see.

I have so many questions that I will post, along with some things that I have already learned. ANY and ALL comments appreciated.

I made a youtube video of my progress up to date. Enjoy!

http://www.youtube.com/watch?v=RoJfMZ9YgQc

Michel (IMG:style_emoticons/default/smile.gif)

[jpnovak]

Much better. You will find it much easier to adjust fuel VE values and see a difference now that you have a nice progression on the rpm axis.

I suggest that you start the car with the laptop running. Keep an eye on the AFR. (you do have a wideband O2 sensor connected, don't you.)

Don't be afraid to tune the fuel up and down and see what it does to the engine. Watch the AFR go down when you add fuel. Watch the AFR lean out when you take away fuel. Keep going until the engine stumbles then add fuel back to stabilize it. This is part of the learning process.

You will need to do this process for just about every point on the VE table. OK, not really, the AFR table will drive the VE Analyze Live just fine while you drive. However, the results are only as good as the target value. Each engine runs differently with variations in AFR.