After installing my new cat back, I just realized that both my cats are missing and a straight pipe was installed between the downpipe and the Y pipe

I bought the car used, it's a 90 vert 5speed. Since I have an s5 this won't affect anything on the 6pi will it? I'm from Michigan so no worry about emission testing.

Since I bought this thing everytime i'm stopped at a light with the top down, the smell of the exhaust makes my eyes burn and it smells like i'm single handedly distroying the ozone with every shift. Plus after I installed the new catback, it feels like my low end is gone. Is there anyway to restore my lost low end torque by advancing the timing or something?

 

I'm sorry she left you.. Oh wait..

6 port activation is controlled by the air pump. If thats still installed your 5th and 6th ports should open.

As for the low end decrease I'm unsure. There may be something to be said about exhaust velocity in this case but I'm not sure. Another forum member might be able to answer that question.