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For those who were wondering if installing the Invidia Mid-Pipe was possible on AWD IS... It is possible!
The only problem why the mid-pipe doesn't fit on AWD IS, is because the transmmission gear box on the AWD IS is much wider than the RWD IS. Everything else fits except the one pipe on the driver side, All you need to do is take it local muffler shop and get it custom to go around the gear box.
I took mine to a local muffler shop and they used left off stainless steel pipping so it doesn't rust over time and welded them together to get around the gear box.
For those who want a Cat-Back Exhaust System for the AWD IS or even RWD IS, I highly recommend Invidia
Last edited by lexus3is; Dec 11, 2014 at 06:24 PM.