Even if you have a CAT, sports or not surely you could just remove it and just let the car warm up naturally? I mean do any other cars have a SAI on the engine just to warm a CAT or am I missing something? Also when you repair it because of the noise is the cause due to how it's built? :/ ie rivets to hold it together or is it something internal because all I have seen is people swapping the rivets for bolts? I'm planning on removing mine as its starting to get noisey now but I have a CAT on?
Some cars have them but not many.
its just to help warm the cat from cold, to prevent damage to it (not as efficient when they are cold either)
Yes the rivets deteriorate, so people replace them for the bolts. The piping from the SAI the crinkle pipe stuff gets brittle too and if that snaps on you they are ridiculously priced from the stealers (they wanted about £60 for 3 bits) erm hello - blanking plate £20 ish and a resistor about £3 off ebay
