If its stainless steel than no. No need for coat or wrap.
If its steel then coat and wrap it. Stainless holds temps down and has velocity.
Make up your mind. The stock pipes are stainless steel.If your talking about stock up pipes than coat them and wrap them
If a magnet sticks then it's not 100% stainless. And a magnet sticks to stock pipes.Make up your mind. The stock pipes are stainless steel.
Mint, my new stainless Y/up pipes are currently at the coater getting ceramic coated, they will not be getting wrapped. Doing both would probably be more effective but wrap holds moisture that will deteriorate the pipes sooner. Not as much concern with stainless but something to think about. I am not wrapping do to limited clearance with my 4" down pipe.
The stock Y pipe and exhaust system are 409 SS which is magnetic.If a magnet sticks then it's not 100% stainless. And a magnet sticks to stock pipes.
A magnet does not stick to my new stainless pipes
Wrapping the up-pipes will NOT raise EGTs. It may very well keep the pipes hotter and not allow them to cool down as quickly after seeing high EGTs but it will not increase EGTs. There are a lot of factors that play into EGTs but wrapped pipes is not one of these factors. Also I never noticed higher EGTs after I wrapped my up-pipes.yes if you read the directions on most wraps it tells you to soak the wrap for like 15 min and then wrap it as tight as you can.... Also wrapping also keeps the heat in and has been known to elevate EGT temps, makes the turbo happier bc heat and drive pressure drive a turbo but we all know what egts can do...