Good Morning all...
When it comes to exhaust the answer is simple....anything you do to reduce back pressure will increase efficency.
1) I use the Calmini header (modified) and it is a good piece, but do some comparison
shopping. Make sure what ever you get has thick exhaust tohead flanges, correctly shaped
ports and no kinks in the bends.
2) If you are worried about heat in the engine bay spend a few bucks and buy a good header
wrap and put it on the header before you install it. Much more effective than a heat shield.
3) I would run a minimum of a 2 1/8 id exhaust with a quality Turbo muffler (and a cat
depending on where you live). I run this set up on my wifes 4dr and its qiet and efficent.
4) Install a minimum of a KN (or eqvialent) aircleaner insert at the same time, there is NO
point in opening up the exhaust and leaving a cork in the intake.
Myth....having read all your posts, you still have engine problems and your results are
not indicative of a header/exhaust install.
There is a lot of really good information on the forum, the search feature is great! Many of the members have a lot of knowledge to share...read back a little. Check out all the great stuff on building engines, engine modifications from spacers to camshafts, and fantastic stuff on suspensions.
A little advice.....I was a newbie only a few months ago, read back and use the search feature please, tons of stuff has been covered in detail...and don't get excited, I saw some joking on this thread but nothing I would consider smart a**.
Everyone else....remember when you were a newbie? Because we can't hear voices and see faces sometimes humourous sarcasim coulld be interperted as being nasty, I'm not saying that has happened here, but I can see how it could happen.
Thanks guys
Zag