longtube header question

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04-21-2007 | 06:39 PM

mustngspd

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Joined: Dec 2006

Posts: 59

From: palm crompton, FL

longtube header question

i just ordered mac longtube headers, shorty off-road h-pipe, and mil eliminators for my 98 mustang gt. is there ne thing i missed that i need to buy for my car to run properly?

04-22-2007 | 08:25 AM

spike_africa

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From: Orlando,Florida

nope you are good to go. I would though offer this advise and say that i wouldnt use the paper gasket MAC gives you for the headers.

04-22-2007 | 10:14 AM

mcmmotorsports

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Joined: Apr 2006

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From: Wappingers Falls, NuYawk

Don't you need o2 extensions for a '98?

04-22-2007 | 06:29 PM

03gtmustang

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From: Northern Va

Mac doesnt give you gaskets when you buy the LT's or short mid pipes.

04-22-2007 | 09:10 PM

spike_africa

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From: Orlando,Florida

Quote:

Originally Posted by 03gtmustang

Mac doesnt give you gaskets when you buy the LT's or short mid pipes.

Every pair i ever delt with did, regardless there paper crap they send you.

04-22-2007 | 10:33 PM

mustngspd

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Joined: Dec 2006

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From: palm crompton, FL

how do i go about installing these headers? is it a project i can do in my garage or should i just go ahead and bring it to a shop??

04-22-2007 | 10:34 PM

spike_africa

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From: Orlando,Florida

drop the K-member its only 8 bolts and will give you tons of space to do the install. Thats what i am going to do.

04-22-2007 | 10:43 PM

mustngspd

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Joined: Dec 2006

Posts: 59

From: palm crompton, FL

heck yes, thats what i like to hear haha. now these long tubes and shorty h-pipe should hook up to the cat back system i have too w/out any modifications right?

04-23-2007 | 07:17 AM

blackstang01

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Joined: Jun 2006

Posts: 66

yes they bolt right up to your aftermarket cat-back system. you may need to buy some O2 extensions but im not sure.

#10

04-23-2007 | 09:09 AM

mustngspd

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Joined: Dec 2006

Posts: 59

From: palm crompton, FL

i got the offroad h-pipe without the cat's, so would it be necessary to buy o2 extensions?

#11

04-23-2007 | 10:43 AM

bassman97

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Joined: Jun 2006

Posts: 2,451

From: North Jersey

Yes because since the front O2's are moved to the collector of the headers, the harness isn't long enough so extensions are needed. Also, because it's not catted, the MIL's need to be installed in the rear sensors.

#12

04-23-2007 | 10:50 AM

red281gt

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Joined: Oct 2005

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From: Fredericksburg VA

yeah you forgot the supercharger!

#13

04-23-2007 | 05:06 PM

03gtmustang

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From: Northern Va

Ive got a write up on the site. Its a little more involved then removing 8 bolts.

#14

06-09-2007 | 04:50 PM

mpt_1962

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Joined: Jun 2007

Posts: 1,041

From: Twentynine Palms, CA

mil eliminator

what is a mil eliminator?

#15

06-09-2007 | 04:59 PM

MattJ

Senior Member

Joined: Dec 2004

Posts: 10,237

MIL is Malfunction Indicator Light. These harnesses will trick the computer into seeing rear o2 sensors so you dont trip that light.

#16

06-10-2007 | 06:24 PM

mpt_1962

Senior Member

Joined: Jun 2007

Posts: 1,041

From: Twentynine Palms, CA

i just bought some long tubes for my 00 gt. Do i need an extension for my o2 sensor too? Or will the sensor on my shorty headers work on the long tubes?