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Discussion Starter · #1 ·
With a stillen intake + the stock plenum, the exhaust is much louder.

However, with the stillen intake + crawford plenum, the exhaust is much quieter.
 

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Interesting. I had the Crawford/Stillen/Z-tube set-up and my exhaust was a bit louder than stock.

I don't recall how it was in comparison to before I put the plunum on, though.
 
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