are a divorce down pipe and test pipe really necessary? i have a cat. but its pretty much shot anyways.
sneakypete said:if you want to free up restrictions in your exhaust system, you must increase the diameter of the exhaust piping from the turbo to the muffler. in addition to that, decreasing the flow work by limiting turbulence and sharp bends in the piping... both the ddp and test pipe will help aid this effort
with me, the biggest bang for the buck when i first got my car was doing this. then you can move on to a bigger turbo
supraboy said:are a divorce down pipe and test pipe really necessary? i have a cat. but its pretty much shot anyways.
theKnifeArtist said:yes, a ddp and test pipe will give you a big improvement over stock, but i don't think moving on to a bigger turbo would be the best idea just yet based on how this question was asked.