1980 Volvo 242GT to:
1980 Volvo 242GT+TiMSnSWB
Step 1 - Install MegaSquirt N Spark
This car was all stock when I got it, with 196,000 miles. My brother in law rescued it from DMV purgatory; it hadn't been registered in several years and about four owners. He got that squared away, jerry-rigged the wiring, put a set of new treads on it, and then sold it to me.
I had no idea what I was getting into with this car... I really wanted a convertible, but that was a no-go from a family standpoint (a new baby and I already have two other two seater cars). This car at least has a sunroof, and it's passin close to a convertible for my needs.
Unfortunately, with only ~100HP, it's a gutless dog. I started with adding an "A" cam (not much of a change from the "B" cam that was already in there!) advancing the timing, and opening up the air intake a little bit. Still too slow. Thus we fast forward to the turbo and intercooler addition (+Ti). See TurboBricks for more info. Somewhere along the line, I lowered it a little bit, replaced the stock springs and struts/shocks with white KYB's from a junkyard and wagon springs, and put in a Recaro seat for the driver. Doing these things made the car feel sportier and more capable, but it still needed more thrust.
After much research, I decided to Megasquirt it. That meant taking the stock K-Jet mechanical fuel injection off and replacing it with the manifold and injectors from a LH (electronic injection) car; in this case an 86 745Ti. This car was the donor for all major pieces of the conversion. This also gave me a chance to repair the rotted stock wiring harness. Once Megasquirt is up and running, I'll roll out MegasquirtNSpark (aka MSnS) and tune it all with a Tech Edge Wideband O2 (WB). That's how we get to 242GT+TiMSnSWB.
Day 1 - removal of K-Jet, cleanup, and wiring repairs:
Day two/three (?): installation. I was working like a maniac, didn't really stop to take a lot of photos.
It fired right up! I'd heard other people with the same result, but it was still shocking how easily it started. Once I adjusted the idle screw, it idled a little rough, but revved quickly and easily. It's crazy how easy Megasquirt (and the easy availability of OEM EFI components) make a swap like this.
Still to do: Run the MAP hose (conspicuously absent from the above images) and install the Tech Edge WBO2 controller. I also need to sort out what vacuum lines/fittings I will need, and which ones should be plugged.