Need help with o/r H pipe

WIKD · July 29th, 2008, 08:43 AM

I am getting ready to install a MAC o/r h pipe in my 2004 Mach 1 and have a few questions. After searching for a while I figured it would be easier to ask here since I wasn't finding what I need.

First off I believe I'll need o2 sensor extensions. Is Autozone or the like the best place to look or do you need to go somewheres else?
Also how long of an extension is usually needed?
Should I use both the front and rear?
Why do some of you eliminate the rear ones and what does the MIL do?
What happens if I hook up front and rear o2 sensors?

Thanks for all your help guys. just trying to go into this project with all the knowledge I need and all the right parts to get the job done.

00vabchgt · July 29th, 2008, 09:14 AM

the O2 sensor extensions are for long tube headers, and they're only for the front sensors. if you have stock manifolds, you don't need them. if you're installing an o/r pipe, you'll need MIL eliminators for the rear O2 sensors unless you have a tuner. with a tuner, you can just turn them off. if you don't have them, you will get a CEL. i don't know if Autozone carries them, but there are plenty of vendors on this site that can help you out. hope this helps...

WIKD · July 29th, 2008, 03:02 PM

Seems like the only problem I'm running into is MIL eliminators. Anyone know where to get them?

Lefty · July 29th, 2008, 06:32 PM

Lots and lots and lots of googleing. I used to know where to get them a couple months ago, but all the sites just refund you're money now

zinc02GT · July 30th, 2008, 12:18 AM

Make your MIL Eliminators...

VERY simple. paladinmicro.com find the link on the left side that says DIY MIL Eliminators.

make sure you unplug you battery, before you put the car on jacks. You need to have it unplugged for it to 'take' the MILs

97mustanggt · August 19th, 2008, 09:33 AM

you know how some off road h-pipes have connections to the rear o2 sensors...do you just go ahead and connect them?...

N29468 · August 27th, 2008, 02:14 PM

This is where i got my MILs like 2 months back BMC Performance - late model Mustang, Mopar and Muscle Car and Truck performance parts, engines and vehicles.

July 29th, 2008, 08:43 AM	#1
WIKD Newbie 2004 Mach 1 Join Date: Apr 2007 Location: Central Florida Posts: 23 iTrader: 0 reviews	Need help with o/r H pipe I am getting ready to install a MAC o/r h pipe in my 2004 Mach 1 and have a few questions. After searching for a while I figured it would be easier to ask here since I wasn't finding what I need. First off I believe I'll need o2 sensor extensions. Is Autozone or the like the best place to look or do you need to go somewheres else? Also how long of an extension is usually needed? Should I use both the front and rear? Why do some of you eliminate the rear ones and what does the MIL do? What happens if I hook up front and rear o2 sensors? Thanks for all your help guys. just trying to go into this project with all the knowledge I need and all the right parts to get the job done.

July 30th, 2008, 12:18 AM	#5
zinc02GT HUGE RED HEADED DUDE W/FIVE-OH 2011 Mustang GT 12.1 @ 116 Join Date: Dec 2007 Location: Alabama Posts: 5,845 iTrader: 1 reviews	Make your MIL Eliminators... VERY simple. paladinmicro.com find the link on the left side that says DIY MIL Eliminators. make sure you unplug you battery, before you put the car on jacks. You need to have it unplugged for it to 'take' the MILs __________________ Mods in garage. Built suspension and gears since posted times.

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July 29th, 2008, 03:02 PM	#3
WIKD Newbie 2004 Mach 1 Join Date: Apr 2007 Location: Central Florida Posts: 23 iTrader: 0 reviews	Seems like the only problem I'm running into is MIL eliminators. Anyone know where to get them?

July 29th, 2008, 06:32 PM	#4
Lefty Resident DJ '01 Cobra Vert. Join Date: Jun 2007 Location: Mechanicsburg, PA Posts: 28,699 iTrader: 12 reviews	Lots and lots and lots of googleing. I used to know where to get them a couple months ago, but all the sites just refund you're money now

August 19th, 2008, 09:33 AM	#6
97mustanggt Hardcore Enthusiast 97GT & 97Snake & 00L T.B.A Join Date: Aug 2008 Location: Richgrove, Ca Posts: 2,183 iTrader: 0 reviews	you know how some off road h-pipes have connections to the rear o2 sensors...do you just go ahead and connect them?...

August 27th, 2008, 02:14 PM	#7
N29468 Hardcore Enthusiast 2004 Mustang Join Date: Oct 2007 Location: Chicago, IL/Ft. Lauderdale, FL Posts: 2,162 iTrader: 5 reviews	This is where i got my MILs like 2 months back BMC Performance - late model Mustang, Mopar and Muscle Car and Truck performance parts, engines and vehicles.

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