2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

whats the difference between an s4 and s5 turbo?

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Old Feb 20, 2004 | 04:21 PM
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From: san jose
whats the difference between an s4 and s5 turbo?

im wondering what the difference is because im going to be upgrading my turbo i have an s4 right now. how much more horsepower can you get with an s5. if you have like say a intake, exhaust, upgraded fuel, safc and a upgraded ecu.
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Old Feb 20, 2004 | 05:00 PM
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From: Avondale, Arizona
The wastegate is a dual hole design to combat boost creep and the compressor wheel is different.

I think it's 10 or 8 fins on the S5.
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Old Feb 20, 2004 | 05:42 PM
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From what I have seen, its basically the same turbo, with a slightly different hot side, negating the need for a twin scroll.

Rat
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