For flexibility, it reuses the stock donut flange system to allow for necessary movement It is a 3 pipe that replaces the 2nd cat The su test pipe includes all.
Mazdaspeed3 Performance Upgrade | Ultimate Racing
It is recommended and you would net some gains from it, but you don't absolutely need it
Now for a full downpipe, absolutely you do
If you aren't concerned about the cel, i would just buy a full downpipe. If you're swapping out the secondary cat for a test pipe, you will need a retune. There are several easy fixes to resolve this issue, the first and simplest fix is to raise the idle on your vehicle through your tuning software Another simple fix is to swap out the stock oil feed bolt with a.
Ultimate racing mazdaspeed3 test pipe Direct replacement of the oem secondary. Hey all, wanting to run an intro gb on our new stainless test pipes for the mazdaspeed3 These test pipes are all stainless and will, unlike the competition's pipe, have added o2 sensor ports for.
Before and after sound comparison of the streetunit test pipe
