Innovate Motorsports Twin Screw Supercharger Kit for FR-S/BRZ

[Blue86]

Originally Posted by n00dle

try this one.

https://www.facebook.com/photo.php?v=3602151351656

Dear God it's beautiful!

[bakerr6]

very sexy look and sound, but I'm still looking forward to getting turbo'd. I would love to see this thing in real life though. It's becoming more of a unicorn project at this point haha

[Carwhisperer]

Originally Posted by LazyZed

actually a modest wheel HP increase would still not put me off this kit. It is all about that power/torque band, whether the dip gets little flatter and how it drives.

If you want big numbers, go elsewhere!

This SC kit on this e85 dyno will easy eliminate all of the dip.
Heres a senior's members (2forme) dyno NA Stock with SRT exhaust/e85 tuned.

[Furtive]

looks incrediably simpler to install than some of the turbo kits out there...

[Calum]

Originally Posted by subatoy

i don't care about whp gimme TORQUE!!!

Horsepower is torque X rpm /5252. So, torque is a component of horsepower. You can't increase one without increasing the other at a given rpm. What you want is more horsepower at the lower end of the RPM range.

[Sportsguy83]

Originally Posted by Calum

Horsepower is torque X rpm /5252. So, torque is a component of horsepower. You can't increase one without increasing the other at a given rpm. What you want is more horsepower at the lower end of the RPM range.

I see it this way (I'm in no way disagreeing with you, just trying to simplify it).

Torque is the measure of force and I understand why some people say that's the only thing they care about. NOW, looking at horsepower and understanding its meaning you can deduct what is torque doing given any RPM range. If you see HP curve flattening out, that's not good, you are loosing torque. If you see HP curve rapidly increasing, that is good most probably your torque is increasing. If HP curve is increasing, but not at a big rate, most probably your torque flattened out which is not bad as long as it is a healthy high number.

So even though Torque is the most important number, you can get a good idea of what torque is like if you have a curve.

In the below graph, TQ is pretty much flat, that is why you see an increasing HP curve (sine the HP equation depends on TQ and RPM, if you keep TQ constant but increase RPM at a linear rate, the HP will increase linearly).




In the other hand, in the below plot you see the TQ mostly flat up to 5000 RPM and HP curve increasing mostly linearly. Then at 5K RPM, TQ falls off. Again, since the HP equation depends on TQ and RPM, the RPM keeps increasing but TQ starts to decrease. This causes the HP curve to start leveling out and even decrease. That is what I meant, looking at the HP curve you can at least have an idea of what the TQ curve is doing.





Disclaimer: Of course none of this works with just the peak HP, but it is no good either if you only have peak TQ, you need to see the curve to be able to tell how good does a system perform.

[Calum]

Originally Posted by Sportsguy83

I see it this way (I'm in no way disagreeing with you, just trying to simplify it).

Torque is the measure of force and I understand why some people say that's the only thing they care about. NOW, looking at horsepower and understanding its meaning you can deduct what is torque doing given any RPM range. If you see HP curve flattening out, that's out good, you are loosing torque. If you see H curve rapidly increasing, that is good most probably your torque is increasing. If HP curve is increasing, but not at a big rate, most probably your torque flattened out which is not bad as long as it is a healthy number.

So even though Torque is the most important number, you can get a good idea of what torque is like if you have a curve.

Disclaimer: Of course none of this works with just the peak HP, but it is no good either if you only have peak TQ, you need to see the curve to be able to tell how good does a system perform.

I think I understood what you wrote. If I understood correctly you've got it. You can calculate either curve from the other. Horsepower and torque is always be the same number at 5252 rpm, torque will always be high then horsepower below 5252 rpm, and torque will always be lower then horsepower above 5252 rpm

[bakerr6]

This is true in theory, but keep in mound that there are other anomalies that can cause these numbers to deviate from the norm

[Calum]

Originally Posted by bakerr6

This is true in theory, but keep in mound that there are other anomalies that can cause these numbers to deviate from the norm

Could you elaborate a little farther? Are you saying that real world conditions can allow horsepower to not equal torque at 5252 rpm. Or that horsepower could be higher then torque below 5252 rpm? If so, you're wrong.

[bakerr6]

Originally Posted by Calum

Could you elaborate a little farther? Are you saying that real world conditions can allow horsepower to not equal torque at 5252 rpm. Or that horsepower could be higher then torque below 5252 rpm? If so, you're wrong.

Neither, RPM is not a variable number, nor is the horsepower, in relation to each other. However the variance comes when you are trying to calculate TQ vs. the RPM.

The 5252 never changes, as this is a constant (unless you are factoring in parasitic losses in the particular system), but the tq and hp numbers are derived from each other. However, the amount of tq required to reach a certain hp number is derived from the RPMs.

[Calum]

So, horsepower varies directly with both torque and rpm.

[zooki]

You guys have to remember that the only thing a dyno measures is torque. Horsepower is mathematically derived from the torque measurement. That's why the horsepower & torque will always be the same at 5252 RPM. Horsepower is just torque over a certain period of time.

[bakerr6]

Originally Posted by Calum

So, horsepower varies directly with both torque and rpm.

Correct, I was just stating that tq being measured at different rpm levels will yield varying results. TQ and HP are only varying factors when you remove the variable for RPM and keep this number at a constant rate, which in this case is what I think you guys were doing (which can make sense).

I always just like to let people know that if you are calculating TQ and HP, numbers may vary, based on the RPM number you are using.

[A5D5TRYR]

Most straightforward way to put it:

HP = Torque * RPM
. . . . . 5252