I got a tsudo header back exhaust (cat delete) and I was installing it and found that it has threading for 2 sensors but nothing for the third (the one immediately after the header) Anybody else come across this? Its the kit specifically for the 08 GTS so Im guessing Im just supposed to KNOW what im doing with the sensor but unfortunately I dont lol. HELP?

 

I suppose your Lancer is PZEV model and Tsudo is for FED.

 

Yessir that looks to be the case. Didnt realize there was a differentiation. I thought a GTS was a GTS. Just my luck!