Bye Bye Smog Pump
- Thread starter yukisho
- Start date
It pumps air into the cats to help them warm up faster (more oxygen to help them burn hotter), and also pumps air into the back of the cylinder heads. I believe this makes the a/f mixture a bit more lean, thus better for emissions.
If you remove the smog pump and related parts, you can also remove some of the AIR solenoids in the passenger fender. I believe there are 3; one controls the EGR, the other two control valves on the smog pump hose. I believe you will get a check engine light if you remove any of the smog equipment; you'll need a chip to tell the computer to ignore that stuff. Had that problem on my Cobra conversion; accidentally left the hose unhooked from the smog pump, and I kept getting AIR codes thrown. Hooked the hose back up, and the codes were gone.
If you remove the smog pump and related parts, you can also remove some of the AIR solenoids in the passenger fender. I believe there are 3; one controls the EGR, the other two control valves on the smog pump hose. I believe you will get a check engine light if you remove any of the smog equipment; you'll need a chip to tell the computer to ignore that stuff. Had that problem on my Cobra conversion; accidentally left the hose unhooked from the smog pump, and I kept getting AIR codes thrown. Hooked the hose back up, and the codes were gone.
desertcox05
New Member
I've been driving around for almost a week with the air pump bypassed and the rest of the emissions stuff in place. No cel yet. YET
I do need to get a new air pmp though
I do need to get a new air pmp though
If using a stock H-pipe, the air pump helps keep the cats alive.
I'm not sure if a new pump will come with a new pulley bud. Normally you swap pulleys.
The air going to the back of the heads helps to light the cats off quicker. That's why that part only functions when the car is cold.
I'm not sure if a new pump will come with a new pulley bud. Normally you swap pulleys.
The air going to the back of the heads helps to light the cats off quicker. That's why that part only functions when the car is cold.
Dino Dino Bambino
15 Year Member
Just rip the smog pump out together with all the associated pipework and say sayonara to the cats as well. You can use a shorter drivebelt and reroute it instead of bolting on a smog pump eliminator pulley.
You'll notice improved performance and have a cleaner engine bay.
You'll notice improved performance and have a cleaner engine bay.
Yeah I got a 90" belt and replaced it. I do feel a bit more performance on it surprisingly. I just have to get the cash to get about 3-4 feet of exhaust pipe so I can get rid of the cats. Luckily we don't do emissions here, most of our tests are visual. About how long do you think I can run with the cats still on till I see a bog in performance and maybe other issues?
It will depend upon what condition the cats and car (tune) are in now. No one can say. I would have waited to bypass the pump till you were ready to circumvent the cats. A smog pump takes a couple of HP to run (nothing you can feel in the SOTP).
). I was just saying that you could use a fox pulley if the cats will be on the car for awhile.
Adam95GT
New Member
how soon do you need it and whats your address.... i think i might have 1 or 2 in the attic at the garage
Check your pm adam.
Couldn't get a good pic since I lost my camera battery, but here's one from my phone. Not the best but you get the idea. I wanted to get this pic up earlier but didn't get the chance.
http://nitrouswow.com/images.php/i802_img073.jpg
Couldn't get a good pic since I lost my camera battery, but here's one from my phone. Not the best but you get the idea. I wanted to get this pic up earlier but didn't get the chance.
http://nitrouswow.com/images.php/i802_img073.jpg
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