I bought my car used with 7k miles on it lets say I want to tune my car and after awhile the motor goes boom. If I take it to ford and take off the tune but they find that I had a tune it. Will they still cover me under warranty if I say that I bought the car used and had no idea that it had been tuned before.
Just wondering cause I used to drive a 07 subaru sti and subaru is really strict on tuning. I got the car used and had some motor problems and it was due to a previous tune on it and was flashed back to stock. Subaru saw this and just replaced it
They can absolutely tell if the car was tuned and returned to stock. The burden of proof is on them though as they have to prove the tune caused the issue. My service guy is cool with whatever I do, maybe yours is as well