Are you ready?

rbickle · #1 (**permalink**) 03-18-2014, 02:34 PM

Just got finished with the new fuel injection system...

I have retrofitted the carburetor with a built from scratch fuel injection system using the Megasquirt controller. This thing is awesome. It allows me to use a laptop and software to set ANY control parameter regarding the engine fuel.

If anyone's interested in looking into this, the website is:
MegaSquirt Engine Management Systems
I bought most of the kit parts from:
MegaSquirt | Engine Management System | Electronic Fuel Injection - DIYAutoTune.com
Configuration software from:
EFI Analytics TunerStudio | tunerstudio.com
The intake, rails, and some other parts I bought from Ebay.

Right now, I just have the system controlling the fuel to the engine. Ignition is still controlled by the MSD electronic distributor and MSD6a CDI box. Later though, I plan to eliminate the distributor altogether and have the megasquirt controller handle the ignition electronically.

I just got the thing finished and fired up last weekend, March 8.

Anyway, here are a few pics of the setup:

This is the megasquirt controller assembled and mounted to my behind the dash panel:

Here's the same unit wired into the car:

The surge tank installed in the trunk. (Also ran 3/8" stainless supply and return lines from here to the engine)

The fuel pumps. Low pressure pump fills the surge tank while high pressure supplies the fuel rails:

...and the assembly on the engine itself:

I've still got some tweaking to do with the parameters, but so far, the difference between this and a carb is night and day. The throttle response now is immediate. Starting the engine is so much easier, regardless of the outside temperature. No more need to let everything get up to temp for 15 minutes while I constantly play with the choke and gas pedal.

I will say that there's been a bit of a learning curve with regard to all of the sensors, and the injection theory, but it's totally worth the effort. Not only does car perform better, but I have a much better understanding of how it all works.

RIck