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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old 10-08-2012, 07:34 PM   #21
OIFVET

 
Join Date: Sep 2012
Vehicle: 1991 ford mustang 5.0
Location: maryland
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as i was getting everything ready for the swap today, i realized that the guy who owned my stang before me had off road H pipes on it. there is a portion of the smog tubes that is plugged up. then it hit me, if he got rid of the stock exhaust there isn't a line running to wear they used to be. I still have the H pipes one with a couple high flow ceramic cat's that i got welded on there. I'm gonna run it through tomorrow and see what the deal is, but i'm thinking that i wont need it for the sniff test. but on the flip side with it hooked up the idle acts stupid. I had planned on replacing the valves today but if there's no line for the cat's what the hell is the point?
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Old 10-09-2012, 12:05 PM   #22
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i appreciate all of the help and advice from y'all i just ran the car through emissions with out the catalytic converter line so it was basically as if i didnt have a smog pump and it passed with flying colors...now for the delete kit!
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Old 09-01-2014, 02:25 PM   #23
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Vehicle: 1990 Ford LX Notch
Location: Texas
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So....
I have a 1990 Notchback without cats, it still has the smog pump and all its plumbing and is currently being driven by the serpentine belt. If I totally remove the smop pump and go with a shorter belt or delete kit should the car pass an emmisions test. I live in Texas and emission testing is mandatory. It was inspected May 2014 before I owned it and apparently passed. I have read this topic so I just want to be sure I do the right thing. Should I get cats put inline before I remove the pump or not? Should I just remove the pump and be done with it. The A/C has been converted to 134A so I will continue to use it, living in Texas it's a requirement.
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Old 09-01-2014, 07:04 PM   #24
65Raven65
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Quote:
Originally Posted by SWGSSSlacker View Post
So....
I have a 1990 Notchback without cats, it still has the smog pump and all its plumbing and is currently being driven by the serpentine belt. If I totally remove the smop pump and go with a shorter belt or delete kit should the car pass an emmisions test. I live in Texas and emission testing is mandatory. It was inspected May 2014 before I owned it and apparently passed. I have read this topic so I just want to be sure I do the right thing. Should I get cats put inline before I remove the pump or not? Should I just remove the pump and be done with it. The A/C has been converted to 134A so I will continue to use it, living in Texas it's a requirement.
I'm in Texas too. Once your car is 25 years old, which is next year, they wont sniff test it. Safety inspection only. I just got mine inspected, it cost like $13.50 or something. Awesome.

Dump the smog crap and don't look back!
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Old 09-01-2014, 07:20 PM   #25
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Also, I've never understood the advantage of running a smog pump delete pulley. Chunk the pump in the trash can and run a shorter belt. Less crap under the hood, less rotating parts to wear out, and a WHOLE lot cheaper.

YMMV
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Old 09-01-2014, 07:20 PM
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