[Whitezx3focusguy01]

I don't know what's going on, but I installed my mac shorty header a couple weeks ago and ever since I noticed a tiny bit of tapping sound whenever the motor is running so i'm wondering exactly what the hell is going on with this thing and is there anything that I did wrong during the install and if any of you experienced anything similiar?

 

[icemanZX3]

its either hitting something when the engine vibrates or you have a lose bolt on the header somewhere

thats my only logical guesses

 

[OGFocus99]

Could be an exhaust leak.

 

[Assasin]

yeah, my header used to do that before i installed the mac copper header gasket. It really helps seal the header right! try it out!