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BRZ Second-Gen (2022+) -- General Topics General topics for the second-gen BRZ |
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01-12-2022, 12:31 PM | #1 |
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Revs bouncing off 1k rpm when shifting to neutral
Title Edit: RPMs* bouncing off 1k rpm
Hi all, Wondering if anybody has experienced this or knows the reasoning as to why this happens as I've found someone else with an aftermarket exhaust on their BRZ experiencing the same thing as me. When I am driving in gear and shift to neutral to coast, the RPM will drop but bounce off of 1k before going back down. I have 1800 miles that were all driven with a stock exhaust and I'm fairly certain I've never noticed this before until I installed my MXP catback last night. Someone else told me that it seems to be normal and that the Hyundai i20n also experiences this. Could anybody confirm this and explain the reasoning why this happens? Thank you! |
01-12-2022, 12:40 PM | #2 | |
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But it is most pronounced when backing into a space when doing a lot of quick short revs. The car will go to idle and then rev 3~4 times to around 1K before smoothing out. I suspect this behavior has to do with emissions and ensuring that any unburnt fuel combusts in the engine and not in or after the catalytic converter. There might be other causes, but I think the reasoning of it being emissions related is pretty sound. |
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The Following User Says Thank You to mazeroni For This Useful Post: | suhhh (01-12-2022) |
01-12-2022, 01:23 PM | #3 |
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Normal. This happens in all my other manual cars.
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The Following User Says Thank You to sds For This Useful Post: | suhhh (01-12-2022) |
01-12-2022, 02:07 PM | #4 | |
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01-12-2022, 02:07 PM | #5 |
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01-12-2022, 03:10 PM | #6 |
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01-12-2022, 03:26 PM | #7 | |
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Not throwing it in neutral on highway speeds, just residential roads when there is an upcoming stop |
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01-12-2022, 03:31 PM | #8 |
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