[Marc S]

I decided to "throw a rev" under the overpass and it would only rev to about 3500? ish. caught me off guard. Is this normal?

 

[Slidd]

Normal for the A8 but should be about 4,000 rpm. Revving an unloaded (neutral) engine is not the best thing.

With the M6 trans, there is no such limit.

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[Marc S]

after I did some searching with titles in the search bar that are all over the place I came to the conclusion it is for emission purposes and can be eliminated through a tune only.

 

[Slidd]

Never heard the emissions thing and I doubt that's the reason. It's done imho because revving an unloaded engine is not good for it. And it's not just Dodge with this limit, many cars have a similar rpm limit in neutral.


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[Marc S]

correct its not only Dodge. It is on all cars modern(rev hang). I get the unloaded engine thing. general consensus, among other things, that it was designed in part to keep nox levels down. Prevents throttle from slamming shut.