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Author
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Topic: how critical is this part of the h-pipe?
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Jdub07
( O Y O )
Member # 2728
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posted
 
 
See the tube thing in the middle of the "H". I think its the egr line.
How critial is it to have that hooked up? Can it be bypassed?
[ July 18, 2006, 06:44 PM: Message edited by: Jdub07 ]
Posts: 7282 | Registered: Apr 2003
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BlueOvalRacing
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Member # 1531
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posted
It's downstream air from the smog pump to the rear cats. It's used to add oxygen to burn off what the front cats don't. If your smog pump is bypassed already, it's not a big deal, but I would make sure that you can undo what you remove come smog time.
Posts: 1159 | From: Pioneer | Registered: Jul 2002
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Jdub07
( O Y O )
Member # 2728
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posted
quote:
Originally posted by BlueOvalRacing:
It's downstream air from the smog pump to the rear cats. It's used to add oxygen to burn off what the front cats don't. If your smog pump is bypassed already, it's not a big deal, but I would make sure that you can undo what you remove come smog time.
No my smog pump is still hooked up. What if the h-pipe I have has that part shaved off? What would I do with the smog pump line? does it need to be hooked up?
Posts: 7282 | Registered: Apr 2003
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Blind
2.3L
CAFords OG
Member # 3052
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posted
is that like on an off-road h or one with hi-flow cats?
if there is no where to hook up that line then just remove the smog tube.
I would keep it though so you can hook it back up to the stock h-pipe come smog time, that's something they would look for since our cars use air pumps.
it's just air, so if you can't hook it to the h-pipe just let it vent, you wont be able to hear it and it wont hurt anything.
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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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Eagle347
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Member # 6205
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posted
Off road H/X pipes have them to. Just plug it and take the smog pump off. Most people use high temp hose with a lug nut wedged in it, then a hose clamp around the nut. I just cut mine off and welded the hole shut. Just make sure it is either hooked up or plugged because if you just leave it you will have an exhaust leak.
[ July 18, 2006, 08:34 PM: Message edited by: Eagle347 ]
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1995 Mustang GTS 1 of 1002 deep forest green GTS's made. Bone stock.
1990 Coupe 347 NX E85 Nitrous kit
Posts: 712 | From: Dayton, OH | Registered: Nov 2005
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Blind
2.3L
CAFords OG
Member # 3052
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posted
quote:
Originally posted by Eagle347:
Off road H/X pipes have them to. Just plug it and take the smog pump off. Most people use high temp hose with a lug nut wedged in it, then a hose clamp around the nut. I just cut mine off and welded the hole shut. Just make sure it is either hooked up or plugged because if you just leave it you will have an exhaust leak.
he's saying his h-pipe doesn't have the tube to connect that too, and is asking what to do with the long smog tube.
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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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Jdub07
( O Y O )
Member # 2728
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posted
The photo is of a stock h-pipe,...used the photo as reference to the smog tube only.
I just bought an x-pipe and the hole for the smog tube is plugged/welded so I wanted to know what options I had for the smog line that is supposed to go to the x-pipe.
Blind,...there wont be any 'pressure' or 'back pressure' issues if I let the smog line just vent? It doesn't work with the mufflers in any? If wont fuck with the computers head or anything?
I need a welder for christmas ![[Big Grin]](biggrin.gif)
[ July 19, 2006, 07:07 PM: Message edited by: Jdub07 ]
Posts: 7282 | Registered: Apr 2003
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Blind
2.3L
CAFords OG
Member # 3052
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posted
quote:
Originally posted by Jdub07:
The photo is of a stock h-pipe,...used the photo as reference to the smog tube only.
I just bought an x-pipe and the hole for the smog tube is plugged/welded so I wanted to know what options I had for the smog line that is supposed to go to the x-pipe.
Blind,...there wont be any 'pressure' or 'back pressure' issues if I let the smog line just vent? It doesn't work with the mufflers in any? If wont fuck with the computers head or anything?
I need a welder for christmas
no you could just leave it unhooked, it's just fresh air being pumped from the air pump, so long as you leave the solenoids and the air pump in place there will be no effect on drivability, it's just used to help the cats burn up unburned gas easier by giving it fresh air. Since you dont have cats it wont do anything anyways.
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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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skeletor1987
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Member # 6597
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posted
i heard that it kinda does not run right if not hooked up
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1987 White LX Hatch
1993 White Mazda Miata
Posts: 100 | From: oakland | Registered: Mar 2006
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