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Old 08-15-2006, 11:39 AM   #1
mhoward1
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Default Turbo vs CSC vs RSC vs...etc

Someone on another site found this chart. This was created by a Euro magazine to compare the different types of F/I systems. The Comparison was on a single V8 (sorry, I donít know which one), with kits that advertise similar Peak HP Numbers. This really shows the differences of different approaches.

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Old 08-15-2006, 11:41 AM   #2
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Quote:
Originally Posted by mh_WRX
Someone on another site found this chart. This was created by a Euro magazine to compare the different types of F/I systems. The Comparison was on a single V8 (sorry, I donít know which one), with kits that advertise similar Peak HP Numbers. This really shows the differences of different approaches.

wooop
dee

freakin'

doo.
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Old 08-15-2006, 11:42 AM   #3
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glad you liked it
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Old 08-15-2006, 11:43 AM   #4
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:d !!!!:d
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Old 08-15-2006, 11:47 AM   #5
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Smooth Power band plus low rpm power of twin screw > Peaky power of a turbo with power only coming on after 3800 rpms
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Old 08-15-2006, 11:49 AM   #6
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Which is why many Luxury brands go with S/C instead of Turbos
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Old 08-15-2006, 11:50 AM   #7
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Quote:
Originally Posted by mh_WRX
Which is why many Luxury brands go with S/C instead of Turbos
Like BMW and Mercedes?

This chart is meaningless. You can tune any type of FI any way you like.
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Old 08-15-2006, 11:51 AM   #8
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Quote:
Originally Posted by beachbum
Like BMW and Mercedes?

This chart is meaningless. You can tune any type of FI any way you like.
True, they could have sized a better turbo that isn't geared toward 1000hp+ and had a much better driveable car.
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Old 08-15-2006, 11:53 AM   #9
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Yes, just like MB..

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Old 08-15-2006, 11:54 AM   #10
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The new v-twin BMW quad turbo steam diesel hybrid is going to throw that chart all to hell.
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Old 08-15-2006, 11:59 AM   #11
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These were out of the box kits...So custom setups would have shown differently.

This does show where power is TYPICALLY delivered.
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Old 08-15-2006, 12:29 PM   #12
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Well you can see how power is delivered, the general shape, which won't change that much. You can see how a turbo delivers a lot more power at the same boost because it doesn't waste crank power compressing the air. Twinscrew pretty much outperforms the roots across the board. Centrifugal looks pretty bad.
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Old 08-15-2006, 12:42 PM   #13
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Quote:
Originally Posted by Freon
Well you can see how power is delivered, the general shape, which won't change that much. You can see how a turbo delivers a lot more power at the same boost because it doesn't waste crank power compressing the air. Twinscrew pretty much outperforms the roots across the board. Centrifugal looks pretty bad.
On a dyno with one pull, yes. Each kit is geared toward a different type of driver. For one, the turbo response looks pretty terrible. I would never drive that turbo car.

The centrifigal is probably the cheapest unit, and you get when you pay for. Twin screw is most likely the most expensive, and with it you get a nice smooth power delivery.

One thing I'm noticing is somehow that twin-screw is sucking up 150hp?!? I think it may have to do with intake temperature instead. The turbo creates more heat but its easier to intercool, most likely the twin-screw isn't intercooled. So they can't run as much ignition timing.
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