"The most antiquated and still very effective way of limiting engine speed is stopping Ignition spark to the cylinders immediately which in turn halts the engine acceleration, it feels like fuel is being taken from the engine so hotrodders coined the phrase "Fuel Cut"."

"Our cars have a "Soft" limiter which first retards timing a little, then more then cuts the ignition power (within a few milliseconds) this causes more of a surging feeling rather than a series of whiplash inducing jolts."

"Still another method used is the Throttle control method. Cars with Electronic throttles (in some cases) use the computer to close the throttle when it reaches its Rev Limit and this in turn creates another type of soft revlimiter."

Why do I post this?
I have a 2006 5AT Sedan and never experienced the "pegging" phenomenon.
Note, I've kept it at the rev limiter for about 3-4 seconds at 6800 RPM.

Someone on the forums originally stated that:
"These are drive by wire cars, when limiter is hit, it simply shuts down the throttle. i.e. no different than you taking your foot off the gas."

Has Infiniti done some changes?

 

I'm not sure. I do notice when I hit rev limiter that my SC boost peaks higher than usual by a good 0.2-0.4psi.

 

I have experienced the "pegging" phenomenon in 1st gear. 6sp MT here, 2004.

 

Everyone, the same thread was posted in the "Engine, Drivetrain & Forced-Induction" section, check it out if you'd like.
https://g35driver.com/forums/engine-drivetrain-forced-induction/103293-rev-limiter-fuel-actually-cut.html

 

Thank you

 

I've always understood from motorcycling that rev limiters retard spark, not fuel flow or anything else.

The electrical/spark system just stops firing the engine, nothing else.

I don't know if cars are the same, though, but I would guess so.

 

if the driver seat belt is not on you will also find your self feeling sluggish around 90 mph safety feature, all nissans have that now you can disconnect it under the drivers seat if u really want

to eliminate your peggin, stalling, bursts at the red line in serious competition/racing if u have the 6mt get the tach up in 6th drop it in to 4th and your car will blow thru the red line with out losing power or fuel or pulsing...your tranny may get a lil beat up but "winning, is winning"

 

Interesting info...
Didn't know anything about the seat belt...
The 06's don't peg...hitting the rev limiter is like not hitting it at all.