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

are any ppl running stage 3 and up on stock exhaust manifolds?

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Old 09-09-2008, 07:46 AM
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Yes. Common.
Old 09-09-2008, 07:51 AM
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yes ported polished ceramic coated.
Old 09-09-2008, 08:16 AM
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i run OEMs with stage 3. no problems.
Old 09-09-2008, 09:48 AM
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Default I was pretty close to that on stock bottom end. Only issue was ate 2 tranny's in 50k. I was using

stock mani to answer your question rakta, at 3+(I ran 100 octane almost exclusively). No problem
Old 09-09-2008, 10:50 AM
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Stock mani's here too.
Old 09-09-2008, 12:58 PM
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uh, very much no. pauter rods, having it honed, valves redone, etc.
Old 09-09-2008, 01:48 PM
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Default on pump gas....

race gas will stabilize things quite a bit.
Old 09-09-2008, 03:06 PM
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stage 3 with stockers here.
Old 09-09-2008, 04:58 PM
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Default yeah, peak torque must take a srs hit on 104octane

if it's running right on pump gas you have nothing to worry about right?
Old 09-09-2008, 06:49 PM
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Default eh... with race gas you will see a reduction in cylinder pressure

that will create quite a pad...


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