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post #1 of 10 (permalink) Old 03-10-2011, 05:08 PM Thread Starter
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Rev Matching

Alright so I got my Z about last week and I'm getting the hang of the car.

One question I've got though when downshifting with rev-matching is at what RPM should you blip the throttle to?

I've been practicing trying to find the sweet spot, blipping a lot and a little to see what's better and what not. Blip too little and you'll get some shaking and the computer will force the engine to rev higher, blip too much and you'll get shaking again and it'll force the engine to a lower rpm.

What's the ideal range of rpm when rev matching? From my experimenting, I think the rpm range is different for each gear transition. What have you more experienced owners found out with downshifting?
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post #2 of 10 (permalink) Old 03-10-2011, 05:29 PM
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The "right" rpm's depend on gear and road speed.


The rpm's should match the gear you want to the road speed.

So if you are doing 70mph in 3rd and slow down to 40mph for a turn. You will need to bring the rpm's up so that you don't upset the car when you let off of the clutch.

Get the rpm's too low, and the car will "dive" and the rpm's will quickly rise.

Get the rpm's too high and the car will lunge forward.

There is a specific rpm for every speed/gear combo. The goal is to "match" the engine and transmission to the car's road speed before (just as?) you release the clutch.

The "perfect" rpm is a moving target. Particularly when driving at the limit.

It takes a lot of practice. I have been practicing on (and off) the track for years and still screw it up more than I care to admit.

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post #3 of 10 (permalink) Old 03-10-2011, 06:03 PM Thread Starter
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Is it fair to say though that the rpm range is around ~4000rpm? Plus/Minus 500rpm?
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post #4 of 10 (permalink) Old 03-10-2011, 07:02 PM
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No. Read Z1's post and memorize it.

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post #5 of 10 (permalink) Old 03-10-2011, 07:37 PM Thread Starter
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Getting me so confused. So say you're in 3rd and you want to get to 2nd.
You're going around say... 20mph

Would the "right" rpm be around 2500-3000rpm?
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post #6 of 10 (permalink) Old 03-10-2011, 09:36 PM
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It takes a lot of practice and hearing or feeling the magic spot to get it right. I usually blip the gas pedal and shift down, but I don't pay attention to the RPM. You just have to know when to do it. It takes practice and being one with the car.

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post #7 of 10 (permalink) Old 03-10-2011, 10:12 PM Thread Starter
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Originally Posted by SmoothZ View Post
It takes a lot of practice and hearing or feeling the magic spot to get it right. I usually blip the gas pedal and shift down, but I don't pay attention to the RPM. You just have to know when to do it. It takes practice and being one with the car.
Alright i'll take your word for it.

I'll just do some trial and error and hopefully find that magic spot within a year of ownership.
Thought there was maybe an easy way, kekeke.
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post #8 of 10 (permalink) Old 03-11-2011, 09:09 AM
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Just keep practicing. It takes a long time to get heel and toe downshifting right. But once you do, it is magic. One thing I forgot to mention, you can do it much easier if your gas pedal is a little wider. I got a set of pedals for mine that help a great deal. Check out www.autovation.net.
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post #9 of 10 (permalink) Old 03-11-2011, 09:36 AM Thread Starter
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Just keep practicing. It takes a long time to get heel and toe downshifting right. But once you do, it is magic. One thing I forgot to mention, you can do it much easier if your gas pedal is a little wider. I got a set of pedals for mine that help a great deal. Check out www.autovation.net.
I was actually considering getting a pedal set cause I have the base model and only the brake and clutch are aluminum plated.
Plus the aftermarket ones look kool.
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post #10 of 10 (permalink) Old 03-11-2011, 01:50 PM
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Alright i'll take your word for it.

I'll just do some trial and error and hopefully find that magic spot within a year of ownership.
Thought there was maybe an easy way, kekeke.
There is no magic spot. You are trying to create a smooth, physical linkage between the wheels rotating at one speed (road speed) and the engine rotating at another speed (whatever you blip the throttle to) using whichever gear you choose.

Basically, as Z1 said, your road speed and gear selection will determine the correct RPM. So basically, there are a nearly infinite amount of combinations or road speed, gear choice, and engine RPM.

The only thing that's gonna help you is time and experience IMO.

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