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?

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.

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

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.

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??

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.

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?

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

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

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.

yeah you forgot the supercharger!

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

mil eliminator
 

what is a mil eliminator?

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

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?

You need extension because the location of the sensor is moved downstream into the collector.