2017 BRZ Performance Package Impressions

[jtaeric]

Originally Posted by Scrappydoo

I always thought that superchargers and turbochargers were both compressors. Both driven by the engine, one mechanically, one by waste gasses. The drive type gives them different characteristics.

Simples.

You are right. It's just the characteristics and in most cases turbo bring more power. I like the NA best and hate turbo. The turbo lag is killing me. If I am going for forced induction, I'll choose supercharger.


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[Gforce]

Originally Posted by Tcoat

The debate is not that turbos produce different boost but your assertion that superchargers don't produce boost at all.
My feet are not wet and yours can't possibly because they are buried in bullshit in everything you say.

I give up. You are a waste of time and energy.

You're the only one debating anything.

Eaton Superchargers do not compress the air. Turbo driven compressors do compress the air. The difference is important and changes the character of the engine. Both are Superchargers. They operate upon entirely different principles.

[Gforce]

Originally Posted by Scrappydoo

I always thought that superchargers and turbochargers were both compressors. Both driven by the engine, one mechanically, one by waste gasses. The drive type gives them different characteristics.

Simples.

Eaton type Superchargers are not compressors. The character of engines boosted by turbos from those boosted by Eaton type blowers is quite different. There are belt driven compressors (Vortec being one) that produce different engine performance from either a turbo or a blower. There are also several other types of mechanical Supercharger that compress the air, Rotrex, g lader, sprintex twin screw and so on.

[Gforce]

Originally Posted by jtaeric

You are right. It's just the characteristics and in most cases turbo bring more power. I like the NA best and hate turbo. The turbo lag is killing me. If I am going for forced induction, I'll choose supercharger.


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You would still notice the difference with a mechanical compressor such as the Vortec.

Turbo lag results from the inertia of the gases that drive the turbine and enter and leave the compressor. Turbochargers suffer from excessive boost pressure that made them unsuitable for variable load engines until computer power was available to control wastegates. Mechanically driven Superchargers could always be controlled by careful selection of drive pulley ratios but now are also equipped with computer controlled bypass valves to limit boost pressure entering the intake.

Blower type Superchargers give lag free linear boost because they pump the same volume of air each revolution of the Supercharger which in turn is a fixed ratio to engine rpm. Turbochargers can deliver higher pressures because the compressor rpm is not fixed.

[Scrappydoo]

God give me fucking strength to get through this.

[Tcoat]

Originally Posted by Scrappydoo

God give me fucking strength to get through this.

Don't even try. Copy paste warrior has not a single clue what he is talking about. He just writes the words with no idea what they mean.

[Ernest72]

I would make my decision based upon what I want out of the car.

If you want top-end gobs of power - get big turbo.
If you want lower to mid end power and some high - supercharger or small turbo.
Want both - twin turbo or V8 with a supercharger or turbo.

Superchargers are better on higher displacement engine as the parasitic drain from turning charger is not as dramatic. That said the newer superchargers are not that bad and thats why you see them on these 4 bangers.

My BRZ will stay NA for now.

[Scrappydoo]

Originally Posted by Tcoat

Don't even try. Copy paste warrior has not a single clue what he is talking about. He just writes the words with no idea what they mean.

TBH you didn't exactly cover yourself with glory on this thread. No offence

[Tcoat]

Originally Posted by Scrappydoo

TBH you didn't exactly cover yourself with glory on this thread. No offence

Ya I missed some flimsy evidence that Porsche allegedly sold them some tech for one part of one very specific engine. This is contrary to something they said in their own write up on the boxer and is still a far cry from "Porsche helped them develop the boxer engine".

The whole Supercharger thing is just ludicrous and totally opposite of what the Eaton site even says. No boost? Not compressing air? Really? The whole turbo vs SC thing was just out in left field and not even part of my case.

[mjanmohammad]

I'm still wondering how we went from talking about our opinions on the 2017 PP to arguing about superchargers...


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[Scrappydoo]

The theme tune from Frozen is running around my head...

[Tcoat]

Originally Posted by Scrappydoo

The theme tune from Frozen is running around my head...

I have a different theme!

[ame="https://www.youtube.com/watch?v=btPJPFnesV4"]Survivor - Eye Of The Tiger - YouTube[/ame]


But if people want to learn that superchargers work by just blowing uncompressed air into the manifold then who am I to step in their way. Everybody just do everything that he tells you and you will have a supercar.

OUT.

[Gforce]

Originally Posted by mjanmohammad

I'm still wondering how we went from talking about our opinions on the 2017 PP to arguing about superchargers...


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Somebody thought the torque dip went away with the 2017 model year. It didn't. The torque dip can't go away. It isn't a dip in torque, it's two peaks resulting form the Porsche designed Vario Cam valve timing system installed as AVCS plus on all Subaru engines. Not even a Supercharger can fill the torque dip. Turbos can if tuned properly because they are not tied to rpm.

That's how.

[nikitopo]