Reply 420 of 428, by shamino
chrismeyer6 wrote on 2021-03-16, 19:24:
I think this counts as a modern activity. The past week I helped a friend upgrade his 1967 mustang to modern fuel injection. We used a kit from Fitech and it was very easy to install and the car runs absolutely fantastic and the ECU isn't even done with it's self learning yet. Over the past few years we've done alot of resto modding work to the car. Just this past year alone we've done alot of engine work. We installed a Ford E303 cam and went with a full roller valve train.
Cool. I don't know anything about carburetors but I'm more comfortable with fuel injection, so if I had a car of that era I'd have to think about doing the same thing. In general I like to keep things period though.
From the pictures I think I can see what must be a MAP sensor and an IAT? In the pics the throttle doesn't seem to be hooked up but I guess there must be a throttle position sensor also?
Does it use a wideband O2 sensor? On a car like that I guess it would be preferred to run it at a constant, slightly rich tune, so it would need a wideband to accomplish that. Most production EFI cars use a narrowband which is only good for bouncing around stoich.
When I moved to California in the 90s I was surprised how many of that era of Mustangs were still around. There were a lot of them being driven, you'd see them all the time (Camaros too). Then in the space of about 5-10 years they disappeared.
I want to do something a lot less ambitious with my car. It's fuel injected but the ECM is primitive so I want to upgrade it to a newer ECM which is a lot faster (responds more quickly and accurately to inputs) and is more tuneable. I have the ECM and started working out how to build the conversion, but then I got distracted, then moved, and it's kind of a forgotten project. I hope to get back to it when I have less other things to do.
In California I had an additional wrinkle to worry about. The better ECM surely wouldn't hurt emissions (it would help if anything), but in California it's illegal to modify anything regardless of how it tests. So I would have had to revert back to the stock ECM every time I had to bring it in for a test/inspection. Now that I've moved I don't need to worry about that though.