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]

James, Excellent description of the process to baseline the timing output.

I am surprised that you do not have better than 85kPa at idle. Even with ITBs and a bigger cam on my 911 I could see better vacuum numbers than this.

If you put your had over the throttle do you actually feel vacuum? I suspect you might have an air leak. I use my compressor to put about 10psi through the vacuum port that the MS unit is connected to. Then listen for air leaks. You may have to tape off the throttle body to seal that end while you listen for leaks. Any common plenum should give you more of a vacuum at idle - even with narrow cam lobe ceters on a hot cam.

You may try the MS Extra code in ITB mode to transition the switch from speed-density to alpha-n at low rpm.