See thats my point! I was stuck between getting an Audi/BMW or another Mitsubishi. I love the look of the Evo and on the first drive i was hooked. I asked the used car place about after market parts at the time. I informed them that i was just planning simple things like intake/exhaust. They said to me that how does the 3rd party vendor know what parts were on the car when i bought it? So he went on to say it was fine.

I will never buy another Mitsu! My buddy also has a m3 and never has any issues with warranty. BMW stands behind its products. You can also buy an exhaust/cat back right at the dealer. They would never claim it broke the car.

I will call other dealerships and see what their stance is on cat/exhaust. Maybe find a friendly dealer.