hi guys i need some help here, hope u guys can help me out.
recently i notice that rear exhaust tip is making some weird vibration sound when i rev my car lightly. yesterday i bring it to an exhaust shop, the mechanic check it by knocking on it lighty and says that the "core" or inside has cracked. he says that if i continue using it it'll result in high fuel consumption and also the "timing" will run. not so sure what he meant by timing.
he showed me a couple exhaust tips, ranging from 150 to 200 also got. some of it looks kinda big and bulky, so i asked the owner and he says that nothing to worry about as the sound won't be very loud and it'll add a bit of performance to it.
so you guys got any idea about it?