HELP! I need answers ASAP!
- Thread starter Mustang90GT50
- Start date
http://lxsteed.stangnet.com/photo5.html , would this work if I used the short belt and plugged the two tubes. I don't really want to remove the smog pump as I will have cats on it every now and then.
Yeah that'll work for now. The whole removing the smog pump burning up your cats thing is true on some cars but not true on the 5.0. If you look at your stock H pipe, all 4 cats are before the tube for the air pump inlet, and exhaust travel will carry any air pumped into the exhaust out the back away from the cats. So the air pump does nothing for the cats on the 5.0.
You can have a little bung welded onto your new X pipe, or not and just let the smog pump pipe hang down there, coathanger or big-'ol-clamp it to the side of the x pipe or something so it doesn't rattle around. The only difference is it's not blowing into your exhaust. Big whoop ya feel me?
You can have a little bung welded onto your new X pipe, or not and just let the smog pump pipe hang down there, coathanger or big-'ol-clamp it to the side of the x pipe or something so it doesn't rattle around. The only difference is it's not blowing into your exhaust. Big whoop ya feel me?
Well if you are going to have anything welded then you want to have a hole of the proper diameter drilled into the side of the x pipe, and then a piece of tube shaped like an L welded over the hole. then you connect your smog pump tube to this tube using high temp silicon hose and a pair of hose clamps. Or just clamp the hose to the side of the X pipe and forget about it. all that smog pump does is pumps fresh air into the exhaust piping to help emissions. yours is offroad... so if you don't hook it up, you pump fresh air next to your x pipe instead of into it. Isn't exactly going to hurt anything.
Michael Yount
Mustang Master
You said you have to pass emissions - is that right? If it's a sniffer test, then you may need the air pump hooked up to pass the test. The way the system is designed to work, the air pump provides fresh air (excess oxygen) to the exhaust stream so the cats can 'catalyze' chemical reactions in the system which further reduce the amounts of HC, CO and NOx in the exhaust. Without enough excess oxygen - provided by the air pump - the reactions can't occur. There are people who've passed without an air pump - no doubt. But each location is different in their testing protocol. A sharp eyed/picky visual inspector will be looking for the air pump to be hooked up to the back of the heads AND the catalytic converters/exhaust system. Have no idea what happens with your inspection -- but those are the possible issues with not hooking it up properly (or at all).
