E C U's...differences?

[b5blue]

What's different with blue, orange, chrome or aftermarket E C U's? Do they effect more than dwell?   

[Nacho-RT74]

RPM limit

up 6000 orange
up 8000 chromed
up 12000 gold

I think stock ( blue or black ) is around 5000, or maybe same 6000 but less dwell

[Ghoste]

As an addition to what Nacho has there, it doesn't mean they act as a rev limiter and cut out at those points.  It's the rpm limit that dwell is accurate to.

[Nacho-RT74]

forgot to add that

[b5blue]

Thanks guys! I got an orange coming with my new dist.  (P3690428)

[Nacho-RT74]

has been told latelly orange boxes are having some quality issues. Chromed box are coming better... not a presonal experience though. I went directly with chromed because I got at hand from somebody wasn't to use it since decided at the end go with MSD

[Ghoste]

I've had equal results with both personally so I think it's hit and miss on the Mopar Performance ECU's in general.

[Nacho-RT74]

BTW I have in hands also a COBRA Brand ECU Blue box ( it was the one on car, before the chromed unit )... I had the ECU box with specs there but lost the box and forgot the specs. I think remember was pretty much similar to the Orange MP unit. Haven't able to find any info about that brand, if somebody knows... will be great

( sorry the highjack )

[b5blue]

No highjack Nacho that's more info! My aftermarket has worked well but I thought best to get "proper MoPar set"....now I hear of bad ones! (crap!) The plan was to keep old one in the car as backup anyway. I thought chrome was "race only" part....not good for daily driver? (what do I know  ) I've never heard of "Cobra" brand.

[Nacho-RT74]

Gold is race only, rest are street/strip.