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

I think I may have turbo problems

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Old 04-29-2005, 12:17 PM
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Would you share the tweak? Wouldn't it be easyer to tweak the N75/MBC?
Old 04-29-2005, 12:22 PM
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Exactly my point.
Old 04-29-2005, 12:24 PM
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I have the tweak but dont sue me if it blows up! lol
Old 04-29-2005, 12:26 PM
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Default 50g/s "peak" or what? That sounds a little off just judging by the compressor map. Its not

like holding more boost to redline will make the turbos ultimately flow more. The peak flow occurs around 16psi or so(disregarding pressure drops, intake drops, etc).
Old 04-29-2005, 12:35 PM
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Default I got the #s wrong. I just made a new thread with accurate #s supported by graphs.

It's more like 25-30 g/s on a RS4 MAF housing/sensor/AMS stage 5 T-box. We tweaked another car though and it went from 260s to 310 on RS4 MAF/stock bosch sensor/A-box K03 chip homebrew. I'll get to graphing and posting about that 2nd car once I have permission from the owner.
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