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Can someone explain how tuners can get 412-418 hp with RS4 parts running less boost than a chipped

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Old 12-23-2002, 01:44 PM
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Default Can someone explain how tuners can get 412-418 hp with RS4 parts running less boost than a chipped

RS4 that makes 420hp? I have asked this before but what kind of magic mojo do they do to make all this power with less parts?
Old 12-23-2002, 01:48 PM
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hehehe welcome back Moses, thought we lost you with that GIAC post a while back!
Old 12-23-2002, 01:53 PM
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Default IM me fool.

I need to bitch to you.
Old 12-23-2002, 01:56 PM
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Default the death threats have slowed down some so I thought I would ask again.

I would think that someone can give a good explanation that would make sense, so I can stop wondering and just accept that some tuners are just god.
Old 12-23-2002, 01:57 PM
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Because more boost doesn't mean more power, and the motors are different
Old 12-23-2002, 02:02 PM
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pressure * cross section == mass
Old 12-23-2002, 02:11 PM
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Default Good question

Do we know if MTM HP is fywheel dynoed or calulated from rear wheel HP? Is the drivetrain loss used by most tuners a fudge factor or realistic (or even the same for all tuners). Also to be considered is that European MTM tuned RS4s are running 98 octane and the quoted HP for the American tuners claiming the figures you quote (512-418)are using 93 octane. Lots of questions.
Old 12-23-2002, 02:14 PM
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Default are the motors that different enough to benefit the S4 to gain as much hp with less boost?

Can you explain it to me better?
Old 12-23-2002, 02:15 PM
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No huge intake ports to fill up on the S4.
Old 12-23-2002, 02:19 PM
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my MSN messenger is all fugged up. I'll email you


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