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If you unplug the NVCS, you should notice the difference when you are driving. It comes on around 1200rpm and cuts out at around 4200 from memory on an R33 - so you lower/midrange will feel alot more sluggish.

The best way would be to put the car on a dyno and look at the power curves with it plugged in and without.

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Hi, Steve

I won't have dyno access till some time next month, so I may try to drive with the NVCS plug in or out, where should I look at for the NVCS plug? I will unplug it and drive to see if I can pick up the difference..

I keep the stock cam gear (but with tomei 264 shaft).

thanks

Originally posted by Steve

If you unplug the NVCS, you should notice the difference when you are driving.  It comes on around 1200rpm and cuts out at around 4200 from memory on an R33 - so you lower/midrange will feel alot more sluggish.

The best way would be to put the car on a dyno and look at the power curves with it plugged in and without.

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https://www.sau.com.au/forums/topic/26619-how-to-test-nvcs/#findComment-562931
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Steve

I am preety sure the NVAC kicks in from 5000rpm all the way to redline, which is the thing that gives u the nice push back in your seat at high revs.

Sidewaymambo

If u put new intake cams in you might have disabled the NVAC, but with the Tomei procams they are still meant to retain it.

Even if it has disabled it with 264 duration cams u should feel more power and torque through the midrange coz the stock cams are only 256 duration.

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it is designed to give more torque at lower revs as most turbo engines have lower compression and have relatively retarded ignition timing to compensate for the turbo boost, thus reducing lag.

therefore it should come in early in the rev range and cut out around when the turbo kicks in.

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