Just thought I'd make a thread with fit's header infos to help people to choose what they want.
Most of my info came from this forum, and I will try to keep this thread updated, so if you have anything to add, just leave me a reply.
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Updated on Mar.11.08 10:19AM
* Header Installation Thread
* Header does not throw a CEL
1.
Megan Racing header:
Good: Price, fitments, quality, noticeable/dyno proven gain pass 4500RPM
Bad: leak with the first batch, seems to be fixed. no low-mid gain, not practical for daily driving. power loss when under load(a fit load of people).
Megan's header is a good choice if you want something thats under 200 bucks, well made, and have noticeable HP gain at upper end. Which is what you want, if you want to drive a Honda fast.
2.
Weapon R Street header:
Good: Price, quality, noticeable/dyno proven torque gain more streetable.
Bad: Many complaints fitments. its shorter then stock header, so everything rise up higher, it's not aliened with the bracket, but despite all the fitments issues, it dose not leak.
Weapon R Street header is a good header for someone wants more torque. If the fitments issue doesn't bother you, then there is no reason not to think about it, for under 200 bucks, it's a great header.
3.
Weapon R Racing header:
-- needs more info --
(dynoed with cat-back)
4.
DC header:
Good: Price, Noticeable gain through out the power band, well made.
Bad: Ceramic Coating is a very debatable topic...but some argue that it will rust sooner then SS headers.
DC header has a good reputation, for under 250, it's a great header, but the fact that it's not SS might bother some people. no dyno info so far.
5.
T1R response header:
Good: Very well made, one of the best headers you can buy for the fit, noticeable/dyno proven gain through out the power band. Large piping size will be good for boost down the road.
Bad: Price.
T1R header is the one buy if you have a 400 - 500 budget for you header.
6.
Spoon header:
-- needs more info --
7.
J's Racing header:
-- needs more info --
It's J's, if you can afford it, you should just go for it.
8.
DME header:
-- needs more info --
note: appears to cause power loss from bad collector design.
8.
Mugen header:
-- needs more info --
note: Extremely well made header, one of the best for the fit, looks wise. Lack dyno info, but being Mugen, which lacks reputation for having the best performance parts.
9.
OBX header:
Comes with a cat-delete as a set. Needs to be modified to make it fit/work.
personal note: stay away from this!!!
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Fit Exhaust Tuning Theories : (pure my personal opinion...feel free to correct me as well)
1. Just want a nice DD with a little more power for when getting one the highway, or passing. not looking to spend too much money on mods.
-You want torque; 4-2-1 design(tri-Y). Weapon R Street will be your choice. It uses the tri-y design which offers better low-mid range gain then 4-1 headers.
-It's relatively cheap, so you don't have to shell out a lot of money, will be a nice trade off.
-Rumor has it that with the extra torque, you won't be pressing down on the gas as hard, in turn, better MPG....can't verify that myself...
2. Extreme Honda Racer.
-If you want to drive a Honda fast, you need to be constantly banging off the rev limiter.
-The L15 in our fit(alone with most honda engines) makes most power in the higher RPMs, so in order to drive the fit fast, you need to stay in the sweet spot(>4500) at all time. So for all the die hard Honda racers, you want the most higher gains you can get, so forget about 4-2-1 headers, as they will never make more top hp then a 4-1 header. In this case, DC, or Megan will be a good fit for you.
-No, only high end power is not practical for street driving, but if you are worried about this, you don't belong to this category.
-If you can afford the T1R, it will be better. From the dyno graph, it appears to provide a more liner gain, and it has bigger piping size, which will result in even more gain when boosted. Being made by T1R, you won't have to worry about the quality.
-If you can afford J's.....enough said.
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-Weapon R Racing header is an odd one. As I said before, 4-2-1 < 4-1 when it comes to make more HP, and I stand by that. Even when it's only within 1, or 2 hp difference. With that said, because of the 4-2-1 design, the WRR header traded that few hp for quite a bit of torque gain. Being the only racing header here also makes it not street legal.
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(leaving out Spoon, and Mugan due to insufficient data)
3. If you are in between those two, then you need to find your own balance, as with everything in life, sometimes not knowing is a blessing...
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hope i didn't forget anything, well, feel free to correct me.
as you can see, I also don't have enough info, so send me more!!!!
Hope this will help more new fit owners to choose which header to buy.
. Hopefully others will post there finds with there headers and we can keep this going.
) Give Ben @ AJ Racing a shout and he will hook you up with one. Tell him Illusive sent you 
whenever i decide to get a header.
Linear Mode
