Want to find out if anyone change extractor 421 experience CEL problem for MAzda 3 auto- can share or how to prevent CEL as this is the common problem. i am thinking of changing as i do not wan to spend time solving the CEL.
hi..i am planning to upgrade my stock turbo to a bigger one...can i just dump the new one just like that or izzit a must for me to prepare for wastegate,bigger exhaust pipe(mine is still standard) etc etc....for the...