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

is the y-pipe and the bi-pipe different or just different names?

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Old 10-23-2004, 10:47 PM
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Default is the y-pipe and the bi-pipe different or just different names?

trying to get some of this crap down???
Old 10-23-2004, 10:59 PM
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yes...y-pipe on top and bi-pipe in front of engine
Old 10-24-2004, 06:30 AM
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Default Y-Pipe is pre-turbo's feeds air from the airbox into the inlet side of the turbo's- ->

The bi-pipe is post turbos...the charged air exits the IC's and passes through the bi-pipe as it enters the throttle body...

Y-Pipe is ontop of the motor...silver.

Bi-Pipe is mounted to the front of the of the motor in an upsidedown Y configuration...if your car is stock you don't have one. You have two plastic pipes that meet at the throttlebody in the the throttlebody boot, in the same configuration as the bi-pipe...
Old 10-24-2004, 08:46 AM
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Nice explanation for the n00b!
Old 10-24-2004, 09:49 AM
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Default thanks!...

I ordered the bi-pipe and was reading up some stuff in the tech area which suddenly gave me this epiphany that wait, they could be different!
thanks again
Old 10-24-2004, 11:48 AM
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Now I can return to my cranky old self...STFA noob!
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