Getting Rid of the cats, MIL Eliminators??????

5.0 Pony · 11-22-2002, 09:49 AM

Hey guys, i am gonna cut my cats outta my stang here pretty soon, and i have heard on the newer stangs that the check engine light will come on and it could bog performance cuz it makes the computer read incorrectly, is this true for the 88's also?? 4 cats is just too many for me. And i dont really wanna buy a new h-pipe, so i am goin old school and cutting and welding in new pipes, lot cheaper. Anyway, will i need to do anything to my computer? Will the check engine light come on? THANKS

IMPULSERACING · 11-22-2002, 03:10 PM

No, it will have no effect on your computer. I would say check the boards for a used H-Pipe. You can pick one up for $50-$75 It will fit the best and give you better performance (2 1/2") then just cutting out the 2 1/4" pipes and welding in new ones. Plus you can keep your stock one and throw it on when it's time to take emissions. You will love the sound and power increase.

Hope this helps.

TwiLighTBluEGT · 11-23-2002, 04:35 PM

No, your check engine light will not come on. On pre-95 stangs there are 2 02 sensors and they are before the cats, therefore they still send the correct reading to the computer after deleting the cats. On 96+ stangs, there are 4 02 sensors, 2 before, and 2 after the cats. That is why 96+ need the MIL Eliminators.

90GT Vert · 11-23-2002, 10:05 PM

theres no need for MILS on 95's and below. You can pick up new 2 1/2inch o/r h-pipes for $120 shipped....or check the boards for used ones.

bottlebaby91 · 11-24-2002, 12:26 AM

Dont go cutting stuff off, get an h-pipe from somewhere.

5.0 Pony · 11-24-2002, 12:52 AM

Ok, thanks guys, i guess im in the market for a new h pipe. O well, gotta get some other stuff first. Thanks for your help

90GT Vert · 11-24-2002, 12:37 PM

n/p man. I got mine shipped for $130 here. Its a stainless steel 2.5 inch dynomax o/r h-pipe. I should of went with x-pipe. Check them out too.

11-22-2002, 09:49 AM	#1
5.0 Pony Registered Member Join Date: Jun 2002 Location: Nebraska Posts: 127	Getting Rid of the cats, MIL Eliminators?????? Hey guys, i am gonna cut my cats outta my stang here pretty soon, and i have heard on the newer stangs that the check engine light will come on and it could bog performance cuz it makes the computer read incorrectly, is this true for the 88's also?? 4 cats is just too many for me. And i dont really wanna buy a new h-pipe, so i am goin old school and cutting and welding in new pipes, lot cheaper. Anyway, will i need to do anything to my computer? Will the check engine light come on? THANKS __________________ 1988 Mustang 5.0 LX Convertible -Mac Cold Air Intake -K&N Cone Filter -9mm FMS Spark Plug Wires -Hedmann Headers 2.5" O/R H-Pipe -Flowmaster 40 series 2.5" Catback

11-22-2002, 03:10 PM	#2
IMPULSERACING Registered Member Join Date: Dec 1999 Location: chicago,IL,USA Posts: 158	No, it will have no effect on your computer. I would say check the boards for a used H-Pipe. You can pick one up for $50-$75 It will fit the best and give you better performance (2 1/2") then just cutting out the 2 1/4" pipes and welding in new ones. Plus you can keep your stock one and throw it on when it's time to take emissions. You will love the sound and power increase. Hope this helps. __________________ 92' LX Hatch (New Combo Coming Soon) Long-Tubes, Off-road H-Pipe, Pro-Dumps, Auburn Pro, 373:1, Strange Axels c-clip elims, control arms, supersubs, 50/50's, Moroso rear trick springs, no sway bars, 5-Lug Pro-Stars 3 1/2", 8 1/2 26x10.5" MT ET streets, N20 91' LX 5.0 Convertable: CobraR Hood, Cobra Spoiler, Cobra R Rims 2001 Expedition: Brush Guard, Clear Corners, Gen 1 Tail Lites, Carbin Fiber Dash Trim, Billet Aluminum A/C Knobs, Flame Gauges

11-23-2002, 04:35 PM	#3
TwiLighTBluEGT Registered Member Join Date: Jun 2002 Location: Massachusetts Posts: 157	No, your check engine light will not come on. On pre-95 stangs there are 2 02 sensors and they are before the cats, therefore they still send the correct reading to the computer after deleting the cats. On 96+ stangs, there are 4 02 sensors, 2 before, and 2 after the cats. That is why 96+ need the MIL Eliminators. __________________ 1991 Mustang GT Conv: 58,000 original miles, 2nd owner. Engine: FMS 65mm tb/spacer, C&L 73mm maf, MAC cai. Drivetrain: Built AOD w/ Edge 2800rpm lockup converter, hardened 3-4 inner shaft, Trans-Go shift kit, B&M supercooler, FMS 3.73 gears & aluminum d/s, rebuilt traction lock. Exhaust: BBK unequal length shorty headers, BBK o/r h-pipe, Flowmaster 2 chamber mufflers. Chassis/suspension/brakes: Kenny Brown supersubs. The rest is stock.

11-23-2002, 10:05 PM	#4
90GT Vert Registered Member Join Date: Nov 2002 Location: Baytown, Texas Posts: 81	theres no need for MILS on 95's and below. You can pick up new 2 1/2inch o/r h-pipes for $120 shipped....or check the boards for used ones. __________________ 90 Ford Mustang GT Vert AOD Some Mods..... "its ok!"

11-24-2002, 12:52 AM	#6
5.0 Pony Registered Member Join Date: Jun 2002 Location: Nebraska Posts: 127	Ok, thanks guys, i guess im in the market for a new h pipe. O well, gotta get some other stuff first. Thanks for your help __________________ 1988 Mustang 5.0 LX Convertible -Mac Cold Air Intake -K&N Cone Filter -9mm FMS Spark Plug Wires -Hedmann Headers 2.5" O/R H-Pipe -Flowmaster 40 series 2.5" Catback

11-24-2002, 12:26 AM	#5
bottlebaby91 Registered Member Join Date: Nov 2002 Posts: 141	Dont go cutting stuff off, get an h-pipe from somewhere.

11-24-2002, 12:37 PM	#7
90GT Vert Registered Member Join Date: Nov 2002 Location: Baytown, Texas Posts: 81	n/p man. I got mine shipped for $130 here. Its a stainless steel 2.5 inch dynomax o/r h-pipe. I should of went with x-pipe. Check them out too. __________________ 90 Ford Mustang GT Vert AOD Some Mods..... "its ok!"

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