Hi all, Ive got an RS250 which has been mapped with a cat-back and intake. Id like to fit a decat, but wondering if Id need to have the map tweaked to suit? From what the previous owner has told me, its just a generic map, i.e. wasn't done on a dyno, so I think it was just an off the shelf map. Which makes me think the car wasn't mapped to the mods on the car. (The car has since been dynoed and had the AFRs checked). Thoughts?
It has the potential to over boost so personally i would get it done properly by a mapper such as engine dynamics etc
Agree entirely with that, you are risking serious engine damage if you don’t get it mapped to suit the mods on it.
Its not going to blow up, The ECU is smart enough to adjust fuel trims etc to stay safe. I ran mine with a decat without map being adjust for like 2 years with no issues....
The single most restrictive item in zorst system is CAT, remapping will not only keep engine happy but good potential to up power considerably
