2 questions/ 1 thread-

[lakedude90]

so im just trying to figure a few things out that i wanna do when i get my 3 and i just want to get a few things figured out



first question is where are the o2 sensors placed at on these cars? i want to get a CBE but i dont want to throw and CELs cause i had to go throught that with my last car and its such a hassle. I know that a few for the car take away the secondary cat. how much does that cat do?

second question. how loud is the HKS CBE i like the tone but i dont want somthing that has only 2 levels (loud and even louder) somthing that u know is quiet but can turn a head if u rly want it to and u get really on it. also not a lot of cabin noise.

thanks alot im trying to get my hw done be for i jump into this

 

[lakedude90]

come on now im sure someone must have some kinda of answer