I just got some exhaust parts for my Evo IX and was hoping for alittle insight. I have the Invidia 02, Helix DP, resonated test pipe and 3" catback with a magnaflow muffler. I wanted something with good flow but a little more subtle than the AMS exhaust. I also have a AEM tru-boost, AEM Uego, and walbro 255lph pump. Do I need to buy additional gaskets for this install, or should this setup come with the gaskets. My concern is with the 02-downpipe connection. Does anyone have suggestions on what to exprect. I looked but Invidia doesn't specify that it comes with the gaskets and neither does helix. HELP???

 

Most aftermarket downpipes will come with a new o2/downpipe gasket, if not you can just re-use the stock gasket. Good luck with the o2 housing install, its a real pain in the ***.

 

I took it all out at the same time. Remove manifold and then take out the turbo with the O2 housing still attached. I worked it in a vice after it soaked for 30 minutes with PB Blaster, bolts came right out with a 1/2" breaker bar. If you go this route put cardboard in front of your radiator or you will bust it up.

 

Also, you must lengthen the o2 sensor wire since the Invidia piece re-locates the bung.