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i might sound like a noob but....


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Posted

U- bend is a part in the exhaust of all 2nd Gen w-bodies. It's right after the downpipe, and theres a bend in the piping thats something like 1.75/2" I think where GM thought it would be a good idea and put a 2nd O2 sensor. It's a huge loss of exhaust flow, and a lot of people cut that out(and maybe the resonator) and weld in a piece of straight pipe to get rid of the bend.

 

It supposedly gives a few extra HP and it reduces knock on the L67 cars.

Posted

here's a pic...

 

U-Bend.jpg

 

 

and how people replace it...

 

u_bend2.jpg

 

 

I want to get a downpipe to get rid of this pos soon.

Posted

here's a pic...

 

U-Bend.jpg

 

 

and how people replace it...

 

u_bend2.jpg

 

 

I want to get a downpipe to get rid of this pos soon.

very nice pics for the topic++ :mrgreen:

Posted

wow :eek: I love gm cars but that's another excellent ideas from the engineers at gm :lol: that would probably make a noticable difference. that's worse than the stock y-pipe on a first gens dual exhaust. thanks for the info and pics :biggrin:

Posted

euro you have got to be the first w-body member near me. im about 30 minutes away from dekalb.

Posted

wow, I've heard of Leland, and I went to community college with a couple girls from Leland. I live in Batavia and I'm at NIU. Where do you go?

Posted

very cool, where at? I sold my Lumina to a couple of hood's in Aurora

Posted

jw todd co. a small welding/fabricating shop on the west side off illinois ave. i see quite a few w's in aurora, but none on our site :sad:

Posted

jw todd co. a small welding/fabricating shop on the west side off illinois ave. i see quite a few w's in aurora, but none on our site :sad:

 

haha, well if you see this one...

 

HPIM0072.jpg

 

....with some black girl driving it that's my old Lumina :(

Posted

Yeah, that U-bend is nice for getting to the O2 sensor but thats about it.

Posted

bigdman, you don't have to worry about this on your vehicle. It doesn't have it.

Posted

yeah good thing it doesn't :willynilly: that's the first thing I would modify if I owned a 2nd gen vehicle.

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