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370z Rev Limiter

Hey guys, Is the stock 370z's rev limiter an ignition cut or fuel cut? Thanks

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Old 12-02-2015, 10:01 PM   #1 (permalink)
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Default 370z Rev Limiter

Hey guys, Is the stock 370z's rev limiter an ignition cut or fuel cut? Thanks
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Old 12-02-2015, 11:01 PM   #2 (permalink)
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Its a fuel cut
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Old 04-23-2018, 11:56 PM   #3 (permalink)
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Bumping this. I came across a thread for the 350z and rev limiters. The first vid shows a VQ35HR that STAYS at redline when the needle hits it. I didn’t notice this kind of behavior on my 370. It kind of hesitated and the needle didn’t bounce off the rev limiter at 7500rpm like I expected it to. Is this the fuel cut?

Here’s the video - it’s the 1st one

https://my350z.com/forum/engine-and-...-limiters.html
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Old 04-24-2018, 12:39 AM   #4 (permalink)
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The FSM has a description of how rev-limiting works. Nissan has taken down many copies of the FSM but you may still be able to find one.

I doubt if any modern engines kill the spark if for no other reason than emissions. But I could be wrong.
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Old 04-24-2018, 04:36 AM   #5 (permalink)
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It is fuel cut I do believe.
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Old 04-24-2018, 06:56 AM   #6 (permalink)
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The factory limiter is actually a throttle cut. Once you hit the ECU's cut point it "pulls back" on the electronic throttle. This is why the car seems to just fall on its face when you hit it. There is a fuel cut limiter in the ECU but from the factory it's set higher than the throttle cut so you'll never see it.

If you're tuned you can actually alter the settings for both limiters and make the fuel cut the one you hit first. Hitting the fuel cut first will give you the more traditional "banging off the limiter" that people have been used to for years. It is going to be harder on the engine though.
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Old 04-24-2018, 07:30 AM   #7 (permalink)
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Quote:
Originally Posted by gomer_110 View Post
The factory limiter is actually a throttle cut. Once you hit the ECU's cut point it "pulls back" on the electronic throttle. This is why the car seems to just fall on its face when you hit it. There is a fuel cut limiter in the ECU but from the factory it's set higher than the throttle cut so you'll never see it.

If you're tuned you can actually alter the settings for both limiters and make the fuel cut the one you hit first. Hitting the fuel cut first will give you the more traditional "banging off the limiter" that people have been used to for years. It is going to be harder on the engine though.
Super helpful response

Not sure if you can take a look below, but based on what you’re saying the 370 rev limiter is different than the one in the 350z (which I was used to years ago)

https://my350z.com/forum/engine-and-...-limiters.html

Two videos... one is a “soft” limiter and one a “hard” limiter. It seems the 370 has neither of these, unless I’m mistaken
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Old 04-24-2018, 09:46 AM   #8 (permalink)
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Quote:
Originally Posted by gomer_110 View Post
The factory limiter is actually a throttle cut. Once you hit the ECU's cut point it "pulls back" on the electronic throttle. This is why the car seems to just fall on its face when you hit it. There is a fuel cut limiter in the ECU but from the factory it's set higher than the throttle cut so you'll never see it.

If you're tuned you can actually alter the settings for both limiters and make the fuel cut the one you hit first. Hitting the fuel cut first will give you the more traditional "banging off the limiter" that people have been used to for years. It is going to be harder on the engine though.
Ever since I had the OS Giken installed I do not hit the electronic throttle cut. I always hit the fuel cut first. I am on the stock tune at the moment. I am not sure what parameters they reference to choose between fuel cut or throttle cut. With the stock VLSD, I would hit the throttle cut every time. It drove me crazy.
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