ECU P4120534 Super Stock / Pro Stock / Nascar

The ECU spec chart I copied to this thread was submitted by @halifaxhops in another thread. Unquestionably a knowledgeable guy. I was surprised to see that there were several types of “Chrome Boxes” listed there. Only one recommended as suitable for street applications (Chrome/Blue NO fins).

So I gathered that one has to be careful about the generic term “Chrome Box”. I do like the chrome case but apparently there is more to it than just pretty. So I checked out my chrome spare. Turned out to be the Chrome/Black P4120534 (racing applications).

@yellow rose has one he has tested. His comment is above in this thread and does prove the spec to be accurate.

I’ll be buying a standard street use application ECU to replace my spare.

If anyone chimes in that is happily (long term?) using a P4120534 ECU in their street driven car I would appreciate knowing what the coil/ballast combination being used is.

Thanks to all who have commented.