Here's a link to rust repair on the Y pipe. This is a VERY poorly designed exhaust. There are several tabs welded on to the exhaust pipe. The heat shields are bolted to each tab. At every tab, the pipe had rusted through. There were several other small rust holes which appeared to be where the pipe was partially crushed during the manufacturing process. It looked like a machine which held the pipe during bending had put 1 inch long dents in the pipe. Every one of them was rusted through as well.

Sorry I don't have any close up pictures. Over the course of 7+ hours, I removed the pipe, ground down the rust and welded on patches using a MIG.


2007 IS 250 AWD, stock, 217,000 miles. Car is in Michigan. I am the original owner. It is typically kept outside and I treat the car like a rented mule.

Jim

 

Holy smokes. That looks like a lot of work.

If you don't mind me asking, what would happen if you left it rusted? Would it affect the car negatively? Luckily I don't have to deal with that. I have stainless steel midpipe and axle-back.

 

It was loud... like an old farm truck

 

The other symptom of those holes is sporadic check engine/check vsc with codes P0420 and/or P0430

 

Good job man, nice shop and tools to work with.

 

yeah. check VSC is on and my check engine light is also on. I disconnected the battery after making this repair in hopes that it would reset but it did not.

 

this work was done at Techshop near Detroit. awesome place every tool you can imagine cost me about a hundred bucks a month