Need help, 2003 G35 sedan won't Rev past 2250rpm

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Old Dec 30, 2013 | 10:38 AM
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Need help, 2003 G35 sedan won't Rev past 2250rpm

Man, no clue what is going on but I just finished installing a motordyne iso thermal plenum spacer and stillen airbox and z tube. No obvious vacuum leaks that I see or hear. I did unplug the battery before I started, and tapped the brakes for a ecu reset before connecting the battery after install.

The first couple miles it was running fine then all of a sudden it won't Rev past 2250rpm. It's almost like it hits and starts bouncing off a Rev limiter. Here is a short video I made :



What could be causing this,has to be something I'm missing. Should I try an ecu reset the pedal method? It would have to be an ecu issue since in any gear it won't rev pst the exact same rpm?

Car is a 2003.5 sedan 5at
 
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Old Dec 30, 2013 | 11:16 AM
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https://g35driver.com/forums/engine-...1-problem.html Maybe?
 
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