# running lean/rmp limiter

**URL:** <https://forums.speedlife.net/t/running-lean-rmp-limiter/102877>\
**Category:** SON240sx Automotive\
**Created:** [January 7, 2007, 9:33pm UTC](https://forums.speedlife.net/t/running-lean-rmp-limiter/102877 "2007-01-07T21:33:20Z")\
**Posts on this page:** 1\
**Showing post:** 16

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**Author:** ![snowboard\_240sx](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/snowboard_240sx/32/5519_2.png) [@snowboard\_240sx](https://forums.speedlife.net/u/snowboard_240sx)\
**Post date:** [January 9, 2007, 5:58pm UTC](https://forums.speedlife.net/t/running-lean-rmp-limiter/102877/16 "2007-01-09T17:58:18Z")

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> [@Guy gets taken out by a tire](https://forums.speedlife.net/t/guy-gets-taken-out-by-a-tire/10856/14):
>
> The ECU is supposed to limit the RPM’s in 5th (and I think 4th too, not sure) to 5,500 RPM’s; this acts as a _secondary_ speed limiter. By the time you’re at that RPM in 5th gear, you’ll be over 200km/h anyway.

you can go up high in fourth…my sohc limieter hit in around 6300-6500rpm and heres a picture of me going 180 in fourth at 6200rpm

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