If you are referring to the 2.0L(Skyactive) 2014 mazda 6, then yes.. except there are very few performance parts for the motor itself. Aside from custom stuff, you can get a different intake, and engine tuning software. That's about it. I am interested in pulling an exhaust header off a wreck cx-5 and making it less restrictive, and seeing what can be tuned from it.
I am interested in pulling an exhaust header off a wreck cx-5 and making it less restrictive, and seeing what can be tuned from it.
I would be interested in seeing someone buy a new CX-5 exhaust header and having it coated internally with ceramic. If would have to be new for ceramic to coat well. Speed shops offer this service. This should reduce the time and gasoline used on cold start due to better heat retention. Excess gas usage in cold areas seems to be a drawback for the CX-5. Probably wouldn't do you much good since you are in warm San Antonio, but someone up north could benefit.
I would be wary of trying to keep the headers hot as well. Sure, it will help fuel consumption when cold, but a big part of the Skyactiv is very efficient emptying of the hot exhaust gases. If things get too hot internally it will start to ping.
Actually, insulating the header keeps the exhaust gases hotter, which reduces their density assisting in efficient evacuation. This generally would minimize heat build-up in the engine (exhaust valves, etc.).
I'm not sure that would hold up, see the Hagen-Poiseuille law. Density is not relevant, but rather dynamic viscosity, which actually increases with temperature in a gas. Kinematic viscosity, which relates dynamic viscosity to density, goes up as well.