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Uhm, the OP is an idiot. Reminds me of the stupid f*cks on the honduh forums during The Forum Wars back a decade ago. Well, before I was banned. The title of this thread says “rev limiter” at 120 mph” not some ambiguous rpm, the rev limiter, which is a simple thing to discern. Close the thread and move on.
I'm not sure what you are saying, are you saying that you inferred that he was saying "red line" from "rev limit". I could easily see someone saying it is rev limiting at 120MPH while only at 4,000 rpm unless the car is using the brakes to limit the speed. The car limits engine speed and vehicle speed by limiting the engine RPM (rev limiting).
 

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Jesus man, there is only ONE rev limiter on any modern vehicle. There is a top speed limiter on many as well. Two completely different functions. The speed limiter does NOT control revs, it controls throttle to maintain speed. That why the speed limiter is always a soft occurrence.

If you read my posts, I asked such questions and the OP is an idiot.
 

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Ah, to me they are two different methods of limiting revs/speed. The speed limiter does control revs, otherwise it could not control speed. I've had the rev limit feel smooth too after using the over rev zone too long and it was slowing me down to the lower limit before a braking zone.
 

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Ah, to me they are two different methods of limiting revs/speed. The speed limiter does control revs, otherwise it could not control speed. I've had the rev limit feel smooth too after using the over rev zone too long and it was slowing me down to the lower limit before a braking zone.
The “speed limiter” only affects revs in that when the throttle is modulated by the speed limiter, the revs follow the speed. It’s a manual transmission after all. The “rev limiter” functions with completely different input and output parameters. If you do your own tuning as I do, you should be able to see the functions performing in a data log.
 
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the air at 4000ft is thinner than sea level, your ecu will pull boost and timing to keep the engine within its operating range.
does it do this even at sea level?
 

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the air at 4000ft is thinner than sea level, your ecu will pull boost and timing to keep the engine within its operating range.
does it do this even at sea level?
The function is active, yes. A stock vehicle will not see a problem at sea level or at 4000 ft. At very high elevation 9-10k(?) you will see/feel a loss of power as the turbo(s) may approach the over speed ratio set in the tune.
 

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I was on a road trip in my RS thru desert land. I opened-it-up a few times, and each time the rev limiter cut in at 120 mph. Elevation was about 4,000 ft. I expected to be able to go faster than 120 mph!

Any thoughts?
The first thing that comes to mind is the valet limiter which keeps the car from reaching high speeds. Read the owners manual on how to turn it off.
 

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No don’t lock it. I want him to know he can come back to it but won’t. He’s gonna find out after acting like a sak that everyone was trying to help him. But he was not hearing what he liked. Hence why he won’t post again. Blame it on everyone being mean, even when he finds out it was exactly one of the things mentioned.
 

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No don’t lock it. I want him to know he can come back to it but won’t. He’s gonna find out after acting like a sak that everyone was trying to help him. But he was not hearing what he liked. Hence why he won’t post again. Blame it on everyone being mean, even when he finds out it was exactly one of the things mentioned.
Light googling says dude is in his 70s. Likelihood low.
 

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Or it was actually 4th gear…. Cuz the math checks out
Yes, I think I asked this way earlier because it did and is the most likely cause at this point. If the guy is indeed 70+, he likely won’t respond because he feels like the idiot he is…
 
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