Stage 0 id leave the dpf casing in place, just get it bored out no need for a down pipe, but don't get it done by some random firm.
Ok sounds like i will either have to tell mapper to take egr software off, or get a egr delete pipe (hardware) If i make the egr delete with hardware, will the car still pass MOT?
Uhm... I dont have an EGR delete pipe, I just have a plate to block the entrance of the EGR. There is a software modification needed to suppress some error.
I DO have a DPF delete pipe. Which is an alternative downpipe, which replaces the downpipe with the DPF on it. See my page (link)
Will it pass MOT? I dont know, mine passed our dutch A.P.K. check. They needed to do an exhaust gass check, since the OBD system says my EGR-self-check was not finished. It will never finish, since it is blocked , when it gave a FAIL, then I would not pass the A.P.K. check. But when it says not yet done, they are allowed to take the gass test.
Since the gas test is done in neutral, the software will not unleash the 200+pk so you will pass the test nicely.
Hiya, I am eagerly awaiting your next installment. hope its all good.