Haven't heard of this one, what do those that know think ?

[verk]

 

[Shiner]

I don't own a 3rd gen., but using experience with lots of gas engines, the factory manifold shown is definitely a p.o.s. compromise/engineering blunder. The aftermarket piece does look like it is a significant improvement. Just my $.01.

 

[cerberusiam]

Good way to sell an after market piece As far as the justification, meh. There are reasons the back cylinder are OBSERVED hotter in the exhaust manifold, doesn't reall ymean they run that much hotter in-cylinder or that it is a serious issue. There is a lot more to it than exhaust manifold design.

 

[Shiner]

I would suggest you ask the guys that race, sled pull, etc., and get their input 1st hand. Guys that win, win for a reason.

 

[Wayne M.]

I’m sure what’s going on at the intake side of the head has to be considered as well. That said, if I ever need to replace, or decide to tune my engine, I will get a aftermarket exhaust manifold.