i have a sneaky suspicion my car is over fueling or something else is a miss but how can i accurately tell?
I have a serious amount of black soot/**** on my rear bumper to the point that I'm having to polish it every 100 or so miles of driving. It was bad when I had the CAT but now its a lot worse.
car drives fine and has plenty of power, doesn't miss fire and only pops on up shifts when warm.
current mods: full 3" turbo back with decat, FMIC, EBC set to 0.7 bar, HKS air filter
I don't know this cars history in japan so something could have been changed map wise and then bits taken off before auction i don't know. Car has never failed an MOT so emissions have been sound. I think i have stock injectors but again haven't looked.
There is no smoke under acceleration (blue or white) and its not burning any oil. any help would be appreciated
I have a serious amount of black soot/**** on my rear bumper to the point that I'm having to polish it every 100 or so miles of driving. It was bad when I had the CAT but now its a lot worse.
car drives fine and has plenty of power, doesn't miss fire and only pops on up shifts when warm.
current mods: full 3" turbo back with decat, FMIC, EBC set to 0.7 bar, HKS air filter
I don't know this cars history in japan so something could have been changed map wise and then bits taken off before auction i don't know. Car has never failed an MOT so emissions have been sound. I think i have stock injectors but again haven't looked.
There is no smoke under acceleration (blue or white) and its not burning any oil. any help would be appreciated