Do i need mil eliminators

fordman1989 · July 14th, 2007, 09:12 PM

i have a 1988 gt mustang 5.0. I just put new headers on and i wanted to know if i did away with the cats if i need mil eliminators. My sensors are in front of the cats. PLEASE HELP!!!!!!!!!

stangliter04 · July 16th, 2007, 04:36 AM

welcome to the site! you dont need them but you are going to get a check engine light without them.

SWEET2KSTANG · July 16th, 2007, 05:14 AM

you do not deen them. there wont be any ses light because it is an obd1 system. there are no sensors behind the cats, and i believe they are only 2 wire sensors.

fordman1989 · July 16th, 2007, 08:36 PM

so if i do away with the cats, and the check engine lite comes on the motors performance wont be affected? (such as newer mustangs)

stoc005 · July 17th, 2007, 10:33 PM

If the O2 sensors are in front of the cats, you cannot eliminate them. They determine fuel/air ratio. Your car will not run well and gas mileage will suffer. The rear downstreams can be eliminated....with care. An '88 5.0... how many O2 sensors? Newer ones have 4, one for each side before and after the cat. If you were in Illinois, it would be NBD since cars as old as yours with NO obdII are not tested anymore. But I wouldn't toss the front O2 sensors. Besides, some header have a boss welded in the accomodate the front O2 sensor.
BK

July 14th, 2007, 09:12 PM	#1
fordman1989 Newbie 1988 Mustang GT Join Date: Jul 2007 Posts: 8 iTrader: 0 reviews	Do i need mil eliminators i have a 1988 gt mustang 5.0. I just put new headers on and i wanted to know if i did away with the cats if i need mil eliminators. My sensors are in front of the cats. PLEASE HELP!!!!!!!!!

July 16th, 2007, 04:36 AM	#2
stangliter04 Enthusiast Join Date: Aug 2005 Location: Port St. John Florida Posts: 850 iTrader: 2 reviews	welcome to the site! you dont need them but you are going to get a check engine light without them. __________________ Silver 04 Cobra... with a Whipple

July 16th, 2007, 05:14 AM	#3
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,430 iTrader: 8 reviews	you do not deen them. there wont be any ses light because it is an obd1 system. there are no sensors behind the cats, and i believe they are only 2 wire sensors. __________________ project warhorse under construction being built by MP2 Performance

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July 16th, 2007, 08:36 PM	#4
fordman1989 Newbie 1988 Mustang GT Join Date: Jul 2007 Posts: 8 iTrader: 0 reviews	so if i do away with the cats, and the check engine lite comes on the motors performance wont be affected? (such as newer mustangs)

July 17th, 2007, 10:33 PM	#5
stoc005 Newbie Join Date: Jul 2007 Location: Midwest Posts: 6 iTrader: 0 reviews	If the O2 sensors are in front of the cats, you cannot eliminate them. They determine fuel/air ratio. Your car will not run well and gas mileage will suffer. The rear downstreams can be eliminated....with care. An '88 5.0... how many O2 sensors? Newer ones have 4, one for each side before and after the cat. If you were in Illinois, it would be NBD since cars as old as yours with NO obdII are not tested anymore. But I wouldn't toss the front O2 sensors. Besides, some header have a boss welded in the accomodate the front O2 sensor. BK

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