4-2-1 Headers, Do you think I will gain HP? Options

[Modified]

I have a 94 Celica ST 1.8L. I have stock headers on it now, if I get these headers
Ebay Headers. Do you think I will gain any HP?

[Bigmeanbulldog55]

Yeah, sure you will. A header is almost always going to make you gain, it's just a matter of how much. If you do it with a CAI and the rest of the exhuast, you'll notice a nice little gain. Maybe 10-15 all together.

[slipgun]

cant see the header link doesnt work. But im willing to bet its like all the other headers and will not bet a strait bolt up you normaly have to modify the pipe in some way to make it mate with the rest of the exhaust. This is because its really a 7afe header for a corola. However... again... I cant see it.

[dustin15brown]

99% sure it's the rolla header, and you will have to weld in a dp and o2 sensor if I'm right.... I've heard shops do it for 200-250

[jgreening]

Yeah, sure you will.  A header is almost always going to make you gain, it's just a matter of how much.  If you do it with a CAI and the rest of the exhuast, you'll notice a nice little gain.  Maybe 10-15 all together.
[right][snapback]338064[/snapback][/right]

I agree with this.

[Batman722]

here read this
http://www.6gc.net/forums/index.php?showtopic=29058
I am geting mine installed tomorrow. I will let you know how much of a diff it really makes

[BLINKYxMUNKEY]

here read this
http://www.6gc.net/forums/index.php?showtopic=29058
I am geting mine installed tomorrow. I will let you know how much of a diff it really makes
[right][snapback]338261[/snapback][/right]

asking, but which header did you get? pacesetter? obx?

[Batman722]

it has the KYO label on it.

This post has been edited by Batman722: Sep 25, 2005 - 8:37 PM

[djspike]

you buy it from ebay?

[Batman722]

yes. I bought it from someone who bought it from ebay. He said it was the same as this one
http://cgi.ebay.com/ebaymotors/94-97-TOYOT...002042787QQrdZ1

I got it at a decent price and tomorrow morn is installation.

[Kwanza26]

They're alright. Performance increases will be slight... but they change the engine sound (unless you have a loud ass exhaust or something... then that will muffle the header's rasp)... The biggest reason for the performance increase is that it eliminates the cat in the header...

[Galcobar]

Could people please stop posting links to Ebay items without giving any details. Those links expire so quickly, and then you're left with: "I bought this, what do you think?"

[Batman722]

Could people please stop posting links to Ebay items without giving any details. Those links expire so quickly, and then you're left with: "I bought this, what do you think?"
[right][snapback]338322[/snapback][/right]

sorry, item # 8002042787

[djspike]

since we lose the cat in the header we will run into emission problems wouldnt we?

[Galcobar]

Thus the need for an underbody cat to replace the one stuck right under the manifold. Great trick -- get a cat with a resonated core and you can simply put it where the stock resonator was. No decrease in emissions quality or noise suppression, and one less item to impair flow, however minimal the impairment created by cats and resonators.

[Batman722]

Thus the need for an underbody cat to replace the one stuck right under the manifold. Great trick -- get a cat with a resonated core and you can simply put it where the stock resonator was. No decrease in emissions quality or noise suppression, and one less item to impair flow, however minimal the impairment created by cats and resonators.
[right][snapback]338371[/snapback][/right]

all US 94-95 STs have 2 cats. One by the manifold and one under the car

[Galcobar]

Okay, then it's the need for ANOTHER underbody cat -- the resonator replacement still works for space issues though.

[Batman722]

Okay, then it's the need for ANOTHER underbody cat -- the resonator replacement still works for space issues though.
[right][snapback]338571[/snapback][/right]

I don't think I will have any probs with emissions. The non cali 96-97 STs only have the one cat and they pass.

All 94-95 STs are cali emissions, I don't know why. My stock 95 manifold had a crack and I was going to replace with a 97 non cali mani. I got the mani and realized I would of needed the 97 exhaust up to the second cat (different 02 sensors, and b pipe is different). I went with the corolla header and pipe and eliminated the big restrictive first cat and I like it.

If you have a 94-95 and you want more out of your ST then I say do it. I have it installed now and it is different to drive. It is faster, smoother, quicker, better. I am not talking "push you back in your seat" fast but there is a definate noticable improvement. I feel the improvement at all RPMs, no jive. I am not one to drive fast a lot of the time, so I wicked notice it at lower RPMs. Much smoother and faster. Definatly faster off the start and I like it. Its adds a little more "pep" into the car.

overall review, if you have the $$, then do it. Don't expect to start living your life a quarter mile at a time after the install but do expect more responce throughout the RPM band, especially in the 94-95s.

[djspike]

what would be your opinion for 96's and above?

[Batman722]

what would be your opinion for 96's and above?
[right][snapback]338682[/snapback][/right]

I don't know, I don't have a 96+ I really couldn't give an accurate opinion. I would assume if it was cali spec then it would be more of a noticable gain.