Sometime next week I am going to a local tuner the retune my car with a crome program and a new ECU because my current setup sucks and isnt working right.
I have recently discovered a few exhaust leaks, one coming out of a bolt underneath the manifold leading to the down pipe, and one where the down pipe connects to the cat. my question is, will this effect my tune in any way?(loss of power), I am planning to get these leaks fixed a few days later.