picture definition of the W-body U-bend
02-09-2006, 03:44 AM
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picture definition of the W-body U-bend
i had always pictured it way different than this, but i just found this picture and wanted to share in case anyone else wanted to know
bonnevilles DO NOT have this
bonnevilles DO NOT have this
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.
02-09-2006, 11:51 AM
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What the hell was GM thinking? 
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02-09-2006, 12:06 PM
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Originally Posted by fantastic88
Why did they put that there? It doesn't even make sense.
GM decided they wanted the O2 Sensor mounted vertically which resulted in what'* been termed the U-Bend
02-09-2006, 12:07 PM
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Originally Posted by jr's3800
What the H*** was GM thinking?
02-09-2006, 12:27 PM
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Originally Posted by toastedoats
Originally Posted by jr's3800
What the H*** was GM thinking?
02-09-2006, 12:34 PM
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Originally Posted by BillBoost37
Originally Posted by toastedoats
Originally Posted by jr's3800
What the H*** was GM thinking?
02-12-2006, 10:02 PM
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It was a wise decision by GM, my GTP scrubs the undercarriage going over those long speed bumps. The U bend does restrict exhaust flow, but it does make the stock exhaust sound cool right at the U bend. I would replace mine, but I'm not modifying it unless parts fail, like my fuel pump, I now have a Walbro. It'* just the beater car, I put all my love in the Bonnie.
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