Quote:
Originally Posted by Gemini
I thought the crossover pipe was only needed for engines that had an odd firing order. Since the 3.8 v6 has an even firing order, I didn't think a crossover was necessary. Of course this is based on a forum I read somewhere.
If i can find where i read that, I'll post a link to it.
Edit: Here is the link - http://www.miracerros.com/mustang/pipes_hpipe.htm
Edit #2: I will be sticking with the stock 2.25in diameter pipes and add turndowns right off the muffler. |
i saw that, but i also saw all of these reasons why you should. all of which are true...
Then why do some people still recommend including an H-pipe in their V6 exhaust system? Here are the arguments I've heard.
# The H-pipe produces a venturi effect. As each exhaust pulse shoots past the equalizer tube it creates a slight vacuum and a pressure drop on the other side of the tube. In an even-fire V6 engine, this occurs just as the next exhaust pulse leaves the opposite cylinder bank. As the pressure drop alternates from side to side it reduces back pressure and allows the exhaust gases to travel more freely through the system. [An interesting theory, but not one, so far as I know, advanced by any manufacturer of H- or X-pipes. ]
# No exhaust manifold flows perfectly. Even with the V6's even firing sequence, there will still be momentary pressure imbalances between the two banks of cylinders. [Probably true]
# The H-pipe produces a better exhaust sound than straight pipes. [?]
# The H-pipe will eliminate the crackle-pop sounds you sometimes get with dual exhaust. [My system doesn't crackle-pop.]