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Old 03-10-2013, 04:04 PM   #1
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Removing the cats

I am about to remove the catalytic converters on my 2001 mustang v6, I have been reading and I know I have to get mil eliminators and put them on the back o2 sensors. But I have read about this and do I need a chip? Will my car run bad? Will I loose mpg? Do to them being gone?
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Old 03-10-2013, 04:27 PM   #2
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No.
You'll gain some higher end power and loose some torque(it's a tradeoff of low-end and high-end power)
your car will be a lot louder and a check engine light will come on for the O2 sensors.
It's illegal and your car won't pass smog.
I don't see how you could be caught unless they put the car up on a lift, or opened the hood. Which I don't think they could do legally.
They do sell fake catalytic converters to weld in place of your old ones, or you could just gut your old ones to make it pass a visual inspection.

Only do this if you don't have to smog your car every year or more.

I live in rural area in CA, there kinda relaxed in my here. here you smog the car when you sell it or take it off of a non-op. after that you can do what ever you want.
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Old 03-10-2013, 04:57 PM   #3
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tip of the day...buy some spark plug non foulers thats big enough for your o2's to screw into...take a 1/2" drill bit and drill out the center of the non fouler...screw them into your rear o2 bungs...then screw the rear o2s into the non foulers...it's a 50/50 shot you'll keep your CEL off by doing this without needing MIL eliminators or a tune
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Old 03-10-2013, 08:08 PM   #4
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Sounds confusing lol. If I have the mil eliminators i don't need a tune right?
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Old 03-10-2013, 09:15 PM   #5
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no, you don't need a tune with the mil eliminators.
I'd try 1slosix's way first, should be cheaper.
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Old 03-10-2013, 10:25 PM   #6
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when i was in the v6 i had the shop make me a custom off road h pipe and ditch the cats. i nevet put any eliminators or anything like that and my car ran fine no problems. didnt let the check engine light bother me either .
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Old 03-10-2013, 10:26 PM   #7
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Quote:
Originally Posted by tommygrubb2001 View Post
Sounds confusing lol. If I have the mil eliminators i don't need a tune right?
it's the most simple thing possible
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Old 03-10-2013, 10:44 PM   #8
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Quote:
Originally Posted by tommygrubb2001 View Post
I am about to remove the catalytic converters on my 2001 mustang v6, I have been reading and I know I have to get mil eliminators and put them on the back o2 sensors. But I have read about this and do I need a chip? Will my car run bad? Will I loose mpg? Do to them being gone?
I run no cats or egr on my GT with the exhuast ( no cats, BBK x pipe, flow superflow 40s,) it's loud!
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Old 03-11-2013, 10:41 PM   #9
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Quote:
Originally Posted by tommygrubb2001 View Post
Sounds confusing lol. If I have the mil eliminators i don't need a tune right?
Just get the MIL eliminators save your self the trouble of drilling holes and all the stuff just plug them in a forget about it
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Old 03-12-2013, 08:13 AM   #10
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Quote:
Originally Posted by tommygrubb2001 View Post
I am about to remove the catalytic converters on my 2001 mustang v6, I have been reading and I know I have to get mil eliminators and put them on the back o2 sensors. But I have read about this and do I need a chip? Will my car run bad? Will I loose mpg? Do to them being gone?
drill the holes it's simple, the car will not run bad, as said before your lower end torque will be transferred to high end. I have not lost any mpg on mine.
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