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)

[Michelj13]

This weekend, I had chance to spend a couple of hours tuning, but, no real progress to report. I played aroud with the ignition timing, VE generator, AFR table.

I think there is something really wrong somewhere. At 1200 RPM, with measured timing of 15 degrees (with respect to TDC fan marking), the engine has no torque to pull the car forward even slipping the clutch is 1st gear. If I bump the timing reference at trigger wheel 10 degrees, which raises RPM to 3000, there is then enough torque to pull car forward.

To answer wndsrfr 's questions.

1. I think it was around 12.5, but, I need to recheck
2. I set my advance like your SDS system with no variation WRT load
3. I think it was 120%, but, will need to check that also

The cam is a Jake Raby 9530. Not sure how wild it is and it did not come with a card. Jake told me, the 9530 cam nets .465 lift at the intake valve, and about .450 on the exhaust.

I will get more accurate info and I also need to figure out how to use the log feature of TunerStudio.

I am thinking, that I may need to give full advance by 2000 rpm for this to work!