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Discussion Starter · #1 ·
I was watching a couple videos, claiming to be stock, that are able to seemingly quite easily run well past 6k RPM. In my car, the very few times I've attempted to push it this high, above @ 5800RPM, the engine sounds like it's going to blow. Actually, after about 5600RPM, it acts like it wants no part of going above 5600-5700 RPM.

Other than someone BS'ing about actually being stock, can anyone confirm easily surpassing 6K RPM? Unlike Hondas, this engine does not appreciate wringing out the gears.

Thoughts?
 

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I don't understand your question. You are free to rev until the fuel cutoff, which is 6600 RPM IIRC.
 

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... engine sounds like it's going.... ...it acts like it wants no part..... ...engine does not appreciate wringing...... .....easily surpassing....
Thoughts?
I think you are using the wrong criteria here. Engines work on principles of physics and mathematics, not human senses and emotions :)
 

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What's the point? Loses all its nuts at 4500 rpms anyway
Yes, but when you run the RPM's out closer to redline you're placing yourself right near peak power when you shift into your next gear. Otherwise, why not just shift at 4500 every time you want the most out of your car?
 

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Yes, but when you run the RPM's out closer to redline you're placing yourself right near peak power when you shift into your next gear. Otherwise, why not just shift at 4500 every time you want the most out of your car?
You can mathematically determine optimum (acceleration) shift points by choosing RPM ranges that maximize torque under the curve. Spoiler -- it depends on which gear you are shifting through.
 

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In almost every vehicle you will put down more torque to the ground in the previous gear. So first more than second, second more than third, third more than fourth and so on. So in a flat out run from zero to Max speed in nearly every instance it will be in your best interest to shift at redline before the fuel cut.

This is a long debated topic in drag racing circles and the consensus is to take it to redline, bang the next gear. However there are vehicles with extremely peaky torque curves that it's in your interest to shift earlier. With the relatively flat curve of the fa20 I'm going on a limb and assuming it isn't one of them, but depending on the gear ratios it may be.

Hondas don't love to be wrung out. Lots of people say it, and there are lots of people who blow them up. For daily driving duty I would stick with shifting earlier if you just want the seat of the pants push.

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Discussion Starter · #11 ·
I don't understand your question. You are free to rev until the fuel cutoff, which is 6600 RPM IIRC.
\
Zax, I'm not referring to free-revving. I'm talking about exceeding 5.6k-5.7k rpm while in any gear. The engine sounds *very* unhappy. I can't imagine eclipsing even 6k rpm while in gear. Not only is there a tremendous loss in power, but the motor doesn't sound like it wants to. Yet, I see videos on-line of people doing it with regularity, claiming it's stock.
 

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Discussion Starter · #13 ·
You can mathematically determine optimum (acceleration) shift points by choosing RPM ranges that maximize torque under the curve. Spoiler -- it depends on which gear you are shifting through.
Has anyone done such analysis on a stock WRX? While I understand there'd be slight variations from vehicle to vehicle, I'd still be curious to see approximations.
 

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Discussion Starter · #14 ·
...
This is a long debated topic in drag racing circles and the consensus is to take it to redline, bang the next gear. However there are vehicles with extremely peaky torque curves that it's in your interest to shift earlier. With the relatively flat curve of the fa20 I'm going on a limb and assuming it isn't one of them, but depending on the gear ratios it may be.
No sugar-coating there...

Hondas don't love to be wrung out. Lots of people say it, and there are lots of people who blow them up. For daily driving duty I would stick with shifting earlier if you just want the seat of the pants push.

Sent from my SAMSUNG-SM-G935A using Tapatalk
That's pretty much what I do, shift earlier. Just wish the twin-scroll had better low-end torque. Isn't it supposed to?
 

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No sugar-coating there...


That's pretty much what I do, shift earlier. Just wish the twin-scroll had better low-end torque. Isn't it supposed to?
Compared to a non twin scroll in the same application it should if all else is equal.

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