rev limiter/over revving problem??

[roboticnissan]

So my ka24e started to give me a bogging problem when i would drift at very high rpms.

I know redline is 6500 or is supposed ti be but i noticed last night it goes ti about 7300 and when it hits this rpm i lose all throttle input. Im sure this is causing damage or at least risking damage, but what is causing my motor to "save" itself? Im thinking its the knock sensor?

[Edwin562]

Ka arent very good at high RPM, especially the single cam.

[future]

Ka arent very good at high RPM, especially the single cam.

Damn you half balanced crank shaft!

[roboticnissan]

I know all about the ka and its engine characteristics. I need to know whats bogging the engine down at 7300rpm or so.

[mendozasport]

your ecu, it goes into a safe mode because the part of its brain that control the limiter is failing, mabe try to replace the ecu or check the harness for any cut or grounded wires

[roboticnissan]

Soundd like a perfect excuse for a beeR to me.

[!Zar!]

Sounds like you are hitting speed cut (115mph), not rev limiter.

[roboticnissan]

Nah its not a speed cut cuz i cant do 115mph donut. If i do a very throttle controlled drift and keep th revs low its cool. But when i pin WOT the revs climb all the way to 7300rpm