Thread: 02 Grand Prix exhaust help

U-bend.

The u-bend is part of the converter assembly. Why not just remove the defouler and install an O2 sensor?

Or get a u-bend delete.... http://zzperformance.com/3800/exhaust/ubend-delete.html

you mean the foulers rotted out, ot the bung rotted off the pipe?

how to make foulers works.

those two parts are like 5 bucks at the parts store. you drill one out like shown.

These are the options for replacing that.
Factory replacement downpipe with cat. Easiest option as long as the cat back bolts aren't rusted. http://www.amazon.com/Walker-54627-U.../dp/B001AGPEA4
Ubend delete kit from zzperformance. Cheapest option but will need to be welded in http://zzperformance.com/3800/exhaust/ubend-delete.html
Downpipe from zzperformace. The better option of these three, bolts in place of the factory downpipe, should be an easy swap as long as your catback bolts aren't rusted. http://zzperformance.com/3800/exhaust/zzp-downpipe.html
If you ever plan on modding your car I would highly suggest a set of headers, most headers on the market come with a downpipe that replaces that section.

if you still have the U bend int he dp right before the flange to the cat back, have that cut out and new round pipe with a bung for the o2 installed for sure.