Turbo verses Supercharger

[ramiram1984]

Originally Posted by ericmpena

I wish I could just drive both a SC and Turbo car so I could decide as well. At first I was leaning towards SC, but then I got so much crap about how you get more bang for your buck with a Turbo, so Idk.
Personally, 98% of my driving is below 4,000 RPMs. Maybe I'm just too careful with my car, but I rarely push it when on public roads...which is 100% of the time because I've never tracked my car. lol.
If that's the case, SC would be a better option since I believe SC's give better low end torque? Turbos work better when you're reved higher, yes? Or maybe I'm all wrong about that.
Personally I'd prefer to keep most of the stock parts when it comes to the engine. I don't want to add this and that along with a SC or Turbo in order to make it work. I just want to be as simple as possible and install it and get results. Is that not possible? Or if it is, would that be a SC or Turbo?

I too usually drive between 3-4k. Punch it or downshift now that am FI. And I'm avg about 30.1 mpg.
But, it Sounds like sc is for you. I knew I wanted to go SC, so I didn't mind buying header(s) and other mods way before going SC. It'd even been a big waste of $ if I would have gone turbo.
Just depends what you want and what power you're looking to put down and of course, $.

[Kiske]

Originally Posted by spc2125

Well this thread has swayed me towards a SC than turbo

Well yeah it will do that to anyone that hasn't already lost their mind to "More Powwwaaaaa!"

[spc2125]

Originally Posted by Kiske

Well yeah it will do that to anyone that hasn't already lost their mind to "More Powwwaaaaa!"

I've gone from wanting to turbo it, to keeping it NA, to supercharging.... and I dont even have one yet !! (Late April is my window)

I'm going to keep it NA and see how it drives when I push it to its limits before I upgrade to FI. Once its payed off in a couple years, then the fun begins !




But in the meantime, I do need to find people around me that have a s/c and turbo frs/brz to ride shotgun in.

[LBC Por Siempre]

Originally Posted by ecko04

I sit on the toiletlmao

No pun intended?

[shaunsweeney]

Originally Posted by ramiram1984

I too usually drive between 3-4k. Punch it or downshift now that am FI. And I'm avg about 30.1 mpg.
But, it Sounds like sc is for you. I knew I wanted to go SC, so I didn't mind buying header(s) and other mods way before going SC. It'd even been a big waste of $ if I would have gone turbo.
Just depends what you want and what power you're looking to put down and of course, $.

Sounds like you would both really enjoy a twin scroll turbo as well.

[ramiram1984]

I wouldn't have minded trying out all systems but JR rotrex was way to go.

[mid_life_crisis]

Originally Posted by ericmpena

I wish I could just drive both a SC and Turbo car so I could decide as well. At first I was leaning towards SC, but then I got so much crap about how you get more bang for your buck with a Turbo, so Idk.
Personally, 98% of my driving is below 4,000 RPMs. Maybe I'm just too careful with my car, but I rarely push it when on public roads...which is 100% of the time because I've never tracked my car. lol.
If that's the case, SC would be a better option since I believe SC's give better low end torque? Turbos work better when you're reved higher, yes? Or maybe I'm all wrong about that.
Personally I'd prefer to keep most of the stock parts when it comes to the engine. I don't want to add this and that along with a SC or Turbo in order to make it work. I just want to be as simple as possible and install it and get results. Is that not possible? Or if it is, would that be a SC or Turbo?

You have it backwards. Superchargers are tied to engine rpm, so they don't build boost as well until the rpm climbs. Turbos can be sized to spool and make power at low rpms.

[ericmpena]

Originally Posted by mid_life_crisis

You have it backwards. Superchargers are tied to engine rpm, so they don't build boost as well until the rpm climbs. Turbos can be sized to spool and make power at low rpms.

Ohhh. I'm completely clueless about this stuff. So when you say Turbos can be sized, what do you mean? Do you mean 1 turbo can be adjusted to spool either at low or high rpm's? Or that different turbos come in different sizes depending on what you want, i.e. Small turbo spools low, and large turbo spools high? Lol. I'm sure that sounds super noob, but I'll never learn unless I ask!

[xwd]

Originally Posted by ericmpena

Ohhh. I'm completely clueless about this stuff. So when you say Turbos can be sized, what do you mean? Do you mean 1 turbo can be adjusted to spool either at low or high rpm's? Or that different turbos come in different sizes depending on what you want, i.e. Small turbo spools low, and large turbo spools high? Lol. I'm sure that sounds super noob, but I'll never learn unless I ask!

The short answer is "yes".

Turbos are powered by exhaust gas. Large turbos need higher RPMs because the engine is pumping more air at higher revs.

On the new Subaru Forester XT and WRX they are using a fairly small twin-scroll turbo and the turbo makes full torque at 2800RPM. It spools pretty much instantly since due to the design and size it doesn't need as much exhaust gas to spool and create boost pressure.

As for the whole SC vs. Turbo argument, it's generally easier to make more power these days with turbos. That's why even though they are probably a little more complex than a SC every OEM uses turbos. If you look at a turbo kit like the AVO one which uses a smaller turbo right off the header it makes more torque at low RPMs than any supercharger does, but there is always going to be the 1/4-1/2 second on/off throttle delay while it spools back up versus the instant response of the SC.

[shaunsweeney]

Twin scroll is what I plan on running in the same location as AVO. Should be a fun project when I'm ready.

[Robftss]

Originally Posted by dwx

As for the whole SC vs. Turbo argument, it's generally easier to make more power these days with turbos. That's why even though they are probably a little more complex than a SC every OEM uses turbos. If you look at a turbo kit like the AVO one which uses a smaller turbo right off the header it makes more torque at low RPMs than any supercharger does, but there is always going to be the 1/4-1/2 second on/off throttle delay while it spools back up versus the instant response of the SC.

It seems OEM's use turbos and PD supers to increase torque at more useable rpms...kinda the opposite of what centri's do.

[shaunsweeney]

The more I look at them the less I like centrifugal sc. Too much of a compromise IMHO.

[DJCarbine]

Originally Posted by shaunsweeney

The more I look at them the less I like centrifugal sc. Too much of a compromise IMHO.

Not for everybody. Used to have a turbo car so I have some frame of reference....

In the end there is no wrong choice IMO