Stickie right here:http://www.focusfanatics.com/forum/showthread.php?t=114486Hmmm. Is there a how to thread for this? I happen to have a header from my black SVT and was just wondering this.
I will say an 4-2-1 adds a some sexy sound to your zx3. Been there done that. I do have an OBX 4-2-1 I'm looking to get rid of, but obviously not trying to force a sale on here.I have the same situation, 2001 ZX3 and have been researching this a little. We basically have four options:
Opt 1. A long tube 4 into 1 type header such as this one. I have not called this place to get the details. Not sure if everything pictured is what you get OR just the header & rap??
This option will work out to be the cheapest since the one header I have checked out bolts up to the stock ZX3 flex pipe. It basically replaces the stock exhaust manifold & CAT. No other parts needed.
Opt 2. A long tube 4-2-1 header specifically for the ZX3 such as part # H10069S at this sight:
It also replaces the stock manifold & CAT and also hooks up to the stock flex pipe.
Both options 1 & 2 should not require any additional items like a new dip stick, CAT or ORP BUT both leave you without a CAT.
Opt 3 is a new SVT 4-2-1 header such as the one at the same sight as opt 2 part # H11108S. This option requires several other items as listed in the great write up that sailor included in his reply. Thanks sailor. I had read that a while back but had forgotten about it during my last three plus weeks of researching a new exhaust.
Opt 4. Basically the same as opt 3 but you purchase everything used. This would be a much more cost effective way to go. There are some exhaust parts & systems for sale now here on FF. Just surf the threads. I agree with 1turbofocus that 4-2-1 design is overall best design. It really is a factor of several things but it always gets back to HP & money.
I'm considering opt 4 BUT sending the the parts out to some place like jet-hot coatings to have them coated. That drives the cost back up though?? Since I don't have to worry about emissions testing, opt 2 seems like a very good option also. Cost would be keep down since I only need to purchase the header for $175 + shipping. I haven't thoroughly checked for the cheapest pricing/availability yet either for new stock items. There are some really nice exhaust pieces out there including high flow CATs but it sure eats up the cash in a real hurry. I'm sure there are some hidden cost WRT gaskets and or bolts that are not included in various "kits" At least that's what I'm plannong anyway.
I also have some classing concerns WRT SCCA autocross racing. I need to check what I can do....if anything and still remain in H street class. The SVT was relegated to H stock (now H street) a few years back which kind of threw the ZX3 to the curb. I mean the SVT has 35+ hp, 4 wheel disc breaks, the racing suspension and a manual transmission WITH an LSD. How can someone say these two cars are equal i.e. lets put them in the same class. O well.....I love a challenge. I hoping I can add anything SVT to my ZX3 and remain in class. If that's the case, that might force me to opt 3 or 4.
If anyone out there has some good info on my classing issue, let me know.
1turbofocus / Tom. I need to learn about the ECU tuning issue. You seem to be the man WRT that. Is there a write up about that detailing what to do / how to go about it?