Equal Lengtth Tuned headers

[DAKRNK]

Can anyone show me the sound of these please

Thanks

[leggyfreak]

me watching this i wanna hear the sound to before i change mine

[BC5RA]

[funkytown]

not a huge difference at idle but get into the revs and sounds like an evo/honda or any other four banger out there...

[Bazza-NZ]

i have a set of equal length Tuned header for $200 if anyone wants them...

[BC5RA]

 Bazza-NZ said:

i have a set of equal length Tuned header for $200 if anyone wants them...

Why haven't you used them?

[Guest]

imho, when u hear equal lengths on the right setup u know its setup to do the business

[Bazza-NZ]

 BC5RA']

[quote name='Bazza-NZ said:

i have a set of equal length Tuned header for $200 if anyone wants them...

/quote]

Why haven't you used them?

They were on my car when i built it, had a TD04 which came in at 2800 so made motorway driving a PITA as the turbo would always been kicking in and out

got a TD05 now tho some might be a worth putting them back on Considering it but I'm not sure if i want to lose that rumble just yet.. besides i don't mind the $200 in cash

You do get the slight rumble at idle so i guess it not completely gone

[BC5RA]

What brand are they?

I might point out that nearly all dyno testing between various aftermarket stainless headers (both equal and unequal) resulted in increased lag but yielding higher power/torque.

[funkytown]

 BC5RA said:

What brand are they?

I might point out that nearly all dyno testing between various aftermarket stainless headers (both equal and unequal) resulted in increased lag but yielding higher power/torque.

increased lag why.. does it make the pulse interferace worse or something like that? ...

[Koom]

 funkytown']

[quote name='BC5RA said:

What brand are they?

I might point out that nearly all dyno testing between various aftermarket stainless headers (both equal and unequal) resulted in increased lag but yielding higher power/torque.

/quote]

increased lag why.. does it make the pulse interferace worse or something like that? ...

Bigger diameter perhaps? Slowing the velocity of gas feeding the turbo.

[Bazza-NZ]

 BC5RA said:

What brand are they?

I might point out that nearly all dyno testing between various aftermarket stainless headers (both equal and unequal) resulted in increased lag but yielding higher power/torque.

X-force or something like that... got told by a mate but then again he isn't the most knowledgeable around

its the 4-2-1 type with the split joins, if i did use then again i would get them welded up to ensure no leaking

increased lag??? But the turbo kicked in more quicker when i had them on, and really did kick in compared to the stock header on there now

[funkytown]

ok maybe i misread - i didnt realise both unequal AND equal length tuned headers gave poorer spool than stock.. my bad

I thought that was a symptom of just the equal length

[Koom]

Equal length would help more than hinder.

[BC5RA]

One reason has been pointed out by Koom, same reason larger internal diameter up pipes result in increased lag, larger area more time to fill, same with FMIC piping.

Another reason would be heat. Cast headers retain heat much better than stainless, which is why most people would heat wrap them before installation.

It all comes down to setup i suppose.

Have a read of this.

http://subaru-wrx-sti.com/web/MODS/WRX%20Header%20Test.pdf

Equal length is best, but I'm sure if you measure them they will fall short of being perfectly equal, I'd say even if you had them made by a professional you would probably get them to within 5mm.

[Bazza-NZ]

 BC5RA said:

One reason has been pointed out by Koom, same reason larger internal diameter up pipes result in increased lag, larger area more time to fill, same with FMIC piping.

Another reason would be heat. Cast headers retain heat much better than stainless, which is why most people would heat wrap them before installation.

It all comes down to setup i suppose.

Have a read of this.

http://subaru-wrx-sti.com/web/MODS/WRX%20Header%20Test.pdf

Equal length is best, but I'm sure if you measure them they will fall short of being perfectly equal, I'd say even if you had them made by a professional you would probably get them to within 5mm.

Sweet thanks for that, will have a good read of it later on, just looking over it i have the GP MOTO style headers just by comparing pictures to what is sitting in the shed

[Guest boostin]

Interesting read that!! So stock isn't so bad after all.

[Bazza-NZ]

 boostin said:

Interesting read that!! So stock isn't so bad after all.

yeah that is for sure.... but its makes you think when they say

"The stock manifold is a cast iron piece that gets the turbo spinning

sooner than any header tested. However, by 3500 rpm on the Stage 2 car, it is

a good 12-15 horsepower and nearly 20 ft-lbs of torque behind the power

levels offered by the headers."

Maybe sounding like an evo/honda has some kind of benefit after all

[madmike]

If you wanna hear equal length headers come to Manfield saturday and poke your head over the pit wall as i go past..

[G-unit]

so stock are unequal right? i thort about buying those 250t headers off here, they ok?

[Guest boostin]

I had them on my GT wagon. Was good while it lasted, but it sounded like an Evo. And they cracked eventually.

[G-unit]

so they dont last long then, heat wrap make it worse?

[Guest boostin]

I got nearly a year out of them, and they were heat wrapped.

[G-unit]

for the price thats not bad then

[Guest boostin]

Yeah I've got another set to fit too. Had them in the garage for a few months now.