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Old 06-24-2004, 10:46 PM   #1
dieharddem
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Default Has anybody bought the XXTuning Header kit?

Im thinking about it - the whp numbers look amazing.

I also think it will look great.

Has anybody bought this? Any opinions?

A previous employee at XX who shall remain nameless, but whose name rhymes with "so slow" recommended it, but it seems he did a lot of talkin out of his arse.

Tony, if you're on here, you tune my car, what's your opinion?
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Old 06-25-2004, 12:30 AM   #2
totoherbs
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Old 06-25-2004, 12:42 AM   #3
darioc
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a couple of my friends have them on their sti's and have nothing but good things to say about them. DO IT!

all i know is there cars are much faster now!
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Old 06-25-2004, 09:22 AM   #4
jbogli
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Default headers

I have them. I love them. 3 bolt flange on the uppipe is a pain in the A. You also may have to trim to get them to not rattle on the subframe but it is no big deal. They install was easy, just takes time. Smoothed out the power band on the 22. They are made by the same place that makes another very good brand that did very well in the header comparison in S3. If you have specific questions pm me and i can help you out. whp #'s will vary by car and setup but i was very happy with mine.
Justin
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Old 06-25-2004, 09:39 AM   #5
Thorn
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Got the kit on my STi and have no complaints about them. Great header and up-pipe combo at a great price.
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Old 06-25-2004, 09:58 AM   #6
mindchatter
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Quote:
Originally posted by Thorn
Got the kit on my STi and have no complaints about them. Great header and up-pipe combo at a great price.
Yup......and yup. No problems here either, top end has definitely improved, even the fiancee noticed and commented. And Tony will tell you to get them (as I spoke to him at length about this step before pulling the trigger).

HTH!

Stu
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Old 06-25-2004, 10:46 AM   #7
jblaine
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If I was gonna drop a few hundred bucks on anything for our 2L, I'd have them cleaned up and JetHot-2000 coated.

But then I like having a well-balanced sportscar, not something that has a 3000RPM powerband
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Old 06-25-2004, 10:51 AM   #8
Davenow
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I would love to see some with and without dyno charts.
The thing to keep in mind is, MOST headers sacrifice low end torque for top end power. While thats fine on an STI, that sucks for a 2.0

Basically headers tend to shift the powerband up in the range.
I have heard of some that suposedly add low end, but I have no idea if these do or not. I tend to not believe that claim anyway, as EVERY experience I have had/seen with headers on a WRX have been negative (so far )

What are your other mods? Do you already have a catless up pipe? Headers would be one of the last mods I would do. The manifolds can flow well over 450whp already. Headers are expensive (relative) and that money could possibly be used for other more effective mods. Unless you have already done the rest...
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Old 06-25-2004, 03:01 PM   #9
LJG33
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Thorn's setup is pretty sick, with the headers. I am going to be getting the XX header in the next couple of weeks along with the invidia exhaust too. It is a killer combo, I can't wait untill I have it on my car!
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Old 06-25-2004, 03:30 PM   #10
03WRXMA
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Werd. What Davenow said pretty much it is.

It moves the power band around, and should be on the list of last things to do mod's if at all.

JetHot is also a MUST have as the headers will cool off quickly and spool shall suffer.
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Old 06-25-2004, 04:09 PM   #11
mindchatter
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This is such a tough thing to research/do correctly IMO. I read....and read.....and read everything I could find via the search function here, and at 3 or 4 other Subaru specific sites.

Some folks say you HAVE to coat them, and I understand the logic behind that. Hotter exhaust = better gas velocity = improved spool time and flow. From my reading though it seemed like the coating would subject the SS to MUCH higher temps than running it without, and the extreme temps experienced would, over time, hasten the fatiguing of the metal leading to cracks/leaks.

On the flipside of that coin, there are some who say that w/o coating you're playing header roulette. Once they're hot a splash from an icy puddle will crack them, it's only a matter of time and luck.

So what's the lesser of these evils? XX Tuning installed mine, and had a set there that an employee had coated.....they had cracked in a few months time.

Setting aside the whole header debate for now, what's the consensus on the coating? And feel free to "noob" me to death, as I'm still learning.

Stu
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Old 06-25-2004, 04:11 PM   #12
Thug
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If it's such a great product why do you have to trim a piece of the car?
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Old 06-25-2004, 04:17 PM   #13
totoherbs
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Quote:
Originally posted by jbogli
I have them. I love them. 3 bolt flange on the uppipe is a pain in the A. You also may have to trim to get them to not rattle on the subframe but it is no big deal. They install was easy, just takes time. Smoothed out the power band on the 22. They are made by the same place that makes another very good brand that did very well in the header comparison in S3. If you have specific questions pm me and i can help you out. whp #'s will vary by car and setup but i was very happy with mine.
Justin
That test showed little... all I saw on the charts were there are 2 types one with good mid range spool and no top end and ones with bad mid range and good top end. I dont think any of the aftermarket headers ive seen will last more then a year or two... coatings will shorten thier life.

Quote:
Originally posted by STiDayDreamin'
This is such a tough thing to research/do correctly IMO. I read....and read.....and read everything I could find via the search function here, and at 3 or 4 other Subaru specific sites.

Some folks say you HAVE to coat them, and I understand the logic behind that. Hotter exhaust = better gas velocity = improved spool time and flow. From my reading though it seemed like the coating would subject the SS to MUCH higher temps than running it without, and the extreme temps experienced would, over time, hasten the fatiguing of the metal leading to cracks/leaks.

On the flipside of that coin, there are some who say that w/o coating you're playing header roulette. Once they're hot a splash from an icy puddle will crack them, it's only a matter of time and luck.

So what's the lesser of these evils? XX Tuning installed mine, and had a set there that an employee had coated.....they had cracked in a few months time.

Setting aside the whole header debate for now, what's the consensus on the coating? And feel free to "noob" me to death, as I'm still learning.

Stu
You sumed it up... basicly if you can live with the draw backs and want more power up top go for it. If you dont want to be looking for leaks in the manifold every few months dont bother. Port match the stockers.

Quote:
Originally posted by y2k24door
If it's such a great product why do you have to trim a piece of the car?

Ive seen a well known brand that had much worse fitmint problems then the splash gard. They had a nice twist to them...
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Old 06-25-2004, 04:23 PM   #14
jblaine
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Worse than bad doesn't negate bad.
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Old 06-25-2004, 04:28 PM   #15
Thug
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Quote:
Originally posted by totoherbs


Ive seen a well known brand that had much worse fitmint problems then the splash gard. They had a nice twist to them...

It could be made by NASA, but if I have to trim part of my car to install, it's not made right unless that was by design. Which would be silly.
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Old 06-25-2004, 04:31 PM   #16
mindchatter
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Quote:
Originally posted by y2k24door
If it's such a great product why do you have to trim a piece of the car?

I wondered this as well, and queried the guys at XX. Apparently when they're cold there's not an issue with fitment, but once they're heated up they may make contact with the frame upon accel or deceleration. From what I was told it wasn't an issue on many cars, but something they felt was better to do initially rather than deal with the fallout from unhappy buyers. And the trimming really is neglible, like less than 1/2" deep by maybe 3-4" long.
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Old 06-25-2004, 05:43 PM   #17
03WRXMA
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Quote:
Originally posted by totoherbs

Ive seen a well known brand that had much worse fitmint problems then the splash gard. They had a nice twist to them...
Yea, its not the splash guard that needs to be trimed, its part of the frame that the rad. sits in.
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Old 06-25-2004, 07:02 PM   #18
jbogli
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Yea not the splash guard you have to trim subframe. I used a ginder to just grind down a bit and that is all it needed. I love the top end. But then again i have never ridden in a car with a 22 with a lot of low end. Maybe then i will change my mind. But as for now i am happy and leak free for a while now.
Justin
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Old 06-25-2004, 07:14 PM   #19
Dizastical
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I have the XXtuning header/uppipe on my car . It makes a world of difference in power but the biggest improvement is the torque delivery ! I produced some huge numbers in torque on my STI with these headers and other supporting mods , along with some dyno tuning from XXtuning (393 Foot Pounds @ The Wheels). Spool up time is alot quicker and less laggy due to the stepped uppipe . You will wonder why you waited so long to do this mod !

Dave
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Old 06-25-2004, 08:12 PM   #20
dieharddem
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Thanks for all the advice, guys. Right now I still have one cat, but will get rid of that with the combo set-up (if I do it).

The only real consensus here is that I sacrifice low end for high end and Im not sure I want to sacrifice that. If anything, I want to get more power in the 4000 - 5500 rpm range.
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Old 06-25-2004, 09:23 PM   #21
Thug
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Quote:
Originally posted by STiDayDreamin'
I wondered this as well, and queried the guys at XX. Apparently when they're cold there's not an issue with fitment, but once they're heated up they may make contact with the frame upon accel or deceleration. From what I was told it wasn't an issue on many cars, but something they felt was better to do initially rather than deal with the fallout from unhappy buyers. And the trimming really is neglible, like less than 1/2" deep by maybe 3-4" long.
I know Im probably just picky, but it sounds like not enough R&D was done. Trimming the subframe of my car isnt something Id really want to do for an aftermarket part.


dieharddem,
Id say it depends on what turbo you're running. With something like the VF22 headers are probably a great idea. With anything smaller probably not.

p.s. I still owe you fog light cover pictures. Sorry about that, been a crazy week.
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