question U BEND
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From: August 07 COTM....NEBF '06, CEBF '06 OHMM '06 ONBF '07 CEBF '07
it is only applicable to the W-bodies, they have a sharp U pipe where the O2 sensor sits in the middle, it restricts the exhaust flow very much so they just cut that part out and weld in a straight pipe with a hole for the O2 sensor to sit in.
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From: August 07 COTM....NEBF '06, CEBF '06 OHMM '06 ONBF '07 CEBF '07
Originally Posted by willwren
W bodies are Grand Prix'* and such. Not Bonnevilles. We don't have U-bends. Never did.
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From: Purgatory
On the factory exhaust for your car, GM decided they wanted the O2 Sensor mounted vertically which resulted in what'* been termed the U-Bend. This restrictive section of pipe causes added backpressure resulting in power loss. Modifying your car with a different intake system and/or smaller pulley only makes this restriction worse. Free up this restriction with our U-Bend replacement.
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From: Climax Springs, Missouri
Originally Posted by fuelforthesoul1999
Thanks Mr. Wren, I should have mentioned that W bodies was Grand Prixes, and the other "such" are Regals, Monte Carlos, Impalas.
*points to sig*.....you forgot one....you bastard you
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From: Minneapolis, MN
While we're on the topic, what exactly is the point of the u bend? The only real benefit I can see from it is that it'* a way to protect the o2 sensor, which works great until you bottom out hard and jam it up into the body and break it (which i've personally seen on a BMW 3-series). Is that the reason GM used it?