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      05-05-2007, 03:29 PM   #19
scalbert
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Drives: '13 S4, '15 Q7
Join Date: Feb 2007
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Quote:
Originally Posted by Terry335 View Post
True it's hard to say, but dumping the cats and cleaning up the bends a little might make a big difference. The closer to the turbo, the higher flowing your exhaust needs to be! Let's just say I'm very optimistic a good downpipe will be worth around 15-20rwhp in a high boost car.
Without the cats I would definitely agree. Especially once some laregr snails are attached.

However, I would love to see a catalytic converter pressure drop test to get an idea on the potential bottleneck of the stock cores.
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