Finally got my EFI Install up and running

dkminors

Member
Things went pretty well overall, but I wasn't in a rush so I read and re-read the materials quite a bit.

I used a 1228746 ecu off a 1989 camaro (5 liter with manual trans). One of the problems I had was that I didn't acknowledge the vehicle anti-theft system and it's consequences. Due to this my initial cranking was just that (with no ground provided to my injectors). Once I figured that out I purchased a painless vats defeat to send the appropriate signal to the system allowing a ground for the injectors. I actually put together a unit on a bread board that worked fine (all of $5 in parts), but my soldering skills weren't up to the challenge hence the painless unit.

Another thing I did was grind down the intake a bit to smooth the transition to the TBI adapter plate.

You can also see where I put the harness through the firewall. The grommet I used was a 2 in. I harvested off a '75 Ford pickup. I like this spot because I think I can store the ecu on top of the heater duct. Not sure whether or not it will be too hot there.

The system has the iat, egr, o2, vss, oil pressure switch, and purge canister on the system as well as the other standard sensors.

Before I installed the tb I sent the injectors over to witch hunter for cleaning and testing. I didn't know anything about the condition of those and figured the cost would be worth the certainty it would provide.

Still a few issues I'm working through, but overall it went well. I'll be looking to have a chip burned once I have enough data logged. I can't thank bill and other folks enough for their expertise and time dedicated to helping people get these sorts of swaps done.

I have enjoyed the process, but it has taken a lot of time and patience. I got ahead of myself when I welded the bung for the 02 sensor and that resulted in the exhaust flange stranded downstream of the bung. :mad2: I had to cut it apart and re-weld upstream. I May have blocked a few other knucklehead moments from my memory, but that was the worst.

I am by no measure an expert on this, but I'm happy to help out or talk this over with anyone locally who May be considering the change.
 

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Nice setup dan. So hows the gas mileage/ power with the new efi system? (im thinking of doing a similar setup on my Scout 2)
 
The power seems pretty similar. I need to log more time to be able to tell on the mileage. I literally just got it going this week.

The issue I mentioned with the knock sensor really sapped the power at higher rpm's but it feels much more normal with that sensor disconnected. I figure it's my noisy lifters that are causing the issue so without a rebuild I doubt I can connect the ks. No big deal really.
 
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