ECU P4120534 Super Stock / Pro Stock / Nascar

Daves69 said

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If I'm reading this right, that 534 ECU should be fine when used for basic applications as long as you are not running the 560 coil and the .25 Ohm ballast. IMO, One might want to carry a spare set.... JIC!

Figure 17-3..........
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I think you are right on. Thanks.

I have discovered that the 4120534 OEM version (rare today) and the specs we have been looking at, is a completely different animal than the later USA, Mexico, Chinese mfg stuff (Mopar Performance). What else is new right?

@yellow rose I sure would like to see a picture of the 4120534 10,500 RPM genuine article you have hanging on the wall.

So this explains why today and for many years, people are running the Chrome/Black boxes in street cars without issues. Confusing that Mopar kept the same part number when the deliverables are not comparable.

Mine, while it was mfg in the USA is the later, less robust modern version of the original 534. So come Spring I will run it, with just a 3.0 coil without a ballast or a 1.5 coil and 1.5 ballast combination.