[Old H2S]

Well I agree..same for a big block Mopar. But EFI with all the adjustments the world still has a lot of problems otherwise there would not be so many tuners straighting out cars. To say a car is best from any factory is leaving 15% on the table from every maker. And if you go the NTSB web site you can look up what series tune your car is up to and it's not the one it came with. I am the guy that will try anything, I am very gullible and from that I have a ton of experience and dyno time, good and bad, and partly from I do not care about money. I know CIS and it works well in a very narrow range just like EFI works great in a +- 5% range, is all it can adjust to, out side of that and it is off to the
tuner. I know carbs and CIS, for EFI all I can do is data log and go to the tuner for a new tune and try again. After I get it right I look at how many tune adjustments $$ and dyno time $$$ and wow nothing is easy.
The price to keep a 40 year old CIS up to snuff is way out of line now. Switching to an '84 EFI is antique now. I have a good running CIS now but add a modern A/F meter to ether one and watch
what happens. Home adjustable types are the right way to max power and no more burned up parts.
I love your El Camino, what color is it?