S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Quick question? if you had RS4 heads and IM would you fit RS4 throttle body or retro fit S4 1?

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Old 12-05-2006, 10:51 AM
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Quick question? if you had RS4 heads and IM would you fit RS4 throttle body or retro fit S4 1?
Old 12-05-2006, 11:08 AM
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RS4 or alternative based on price, no way on the S4
Old 12-05-2006, 11:38 AM
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Default Agreed. There are better places to spend your money....talking from experience

But there are a few upsides:
if I ever need to replace a head, I can get 2.8 heads cheap
The RS4 Bipipe is nicer than APR bipipe
and I paid for all my Euro/RS4 parts before the dollar (vs Euro) tanked.
Old 12-05-2006, 11:58 AM
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Default I have these fitted as part of new engine spec, but wondered

if low end torque would be better with S4 throttle body over RS4.
Old 12-05-2006, 11:59 AM
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the differences are marginal...I think most gains are up top....RS4 has higher RPM limit
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Quick Reply: Quick question? if you had RS4 heads and IM would you fit RS4 throttle body or retro fit S4 1?



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