anyone replace there cat with a pipe?

[barry 90 525i]

on my 90 525 my cat has several holes, was wondering if it would be better with straight pipes, there is no emisiion where i live, thanks

[BigKriss]

i'd like to do this don gale has a good setup

[bmwrp8]

on my 90 525 my cat has several holes, was wondering if it would be better with straight pipes, there is no emisiion where i live, thanks

thats what i did in mine...took out the cat and replaced it with 2 pipes only problem is everytime I start the car it says "catalyst" in the check control...I posted a thread about eliminating "catalyst" in check control but was to damn lazy to do it and just lived with it goes out after you start the car

[tomd365]

Did going to a pipe change the sound of the car?

[bmwrp8]

Did going to a pipe change the sound of the car?

a bit and the gain wasn't that much also

[Jon K]

Running no cat or hi flow cats and a high flow muffler does make the car notably raspier.