Smog Pump Delete
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Joined: May 2017
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From: Indiana
Smog Pump Delete
So back in September or so my smog pump went out and I replaced it with an idler pulley. (On a side note, I highly recommend the CNC machined smog pump delete kit from tandthorsepower on eBay. Very high quality with very good instructions. Fair price too.) All the emissions junk just clutters the engine bay and I’ve been wanting to remove it for months now. Can anyone that’s done this mod tell me what I can start pulling out to clean up the engine bay? Are there any electrical systems I have to trick to avoid ses lights? Any information would be greatly appreciated! Thanks!
Team Owner
Joined: Jul 2004
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From: Hartford WI
Remove the check valves where the thin metal pipes go into the exhaust manifold. Cap them. Follow it and you will get to the AIR diverter valves. Take that off. Somehow prevent the wires from getting wet. Part of the AIR system is the metal hose that goes to the cat. Cut that off and seal it at the cat. Remove the metal line.
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Joined: May 2017
Posts: 93
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From: Indiana
Remove the check valves where the thin metal pipes go into the exhaust manifold. Cap them. Follow it and you will get to the AIR diverter valves. Take that off. Somehow prevent the wires from getting wet. Part of the AIR system is the metal hose that goes to the cat. Cut that off and seal it at the cat. Remove the metal line.
Team Owner
Joined: Jul 2004
Posts: 28,357
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From: Hartford WI
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From: Indiana
Racer
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From: Hartford WI
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Melting Slicks
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From: Leland , North Carolina
I grew weary of trying to get it out and cut it. Also used JB weld to seal the air hole but mine did not have a center cat. Its all gone now, cats all deleted with some cheap Hedman Headers. I dumped all the emissions, egr block off etc and had it all deleted in my PROM program. Runs much better...
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From: Hartford WI
It's very easy to "gut" the factory air pump. I did an emissions delete last year consisting of removing egr, air pump, cats, and proper reprogramming. Rather than go with an idler pully, I opted to gut my factory air pump. I took it apart, pulled all the vanes and mechanism out of it, and greased the bearings. I also removed all air lines and check valves. My old air pump now functions perfectly as an idler pully.
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Team Owner
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Not sure why there is a difference but corvette mods came out first with the search. What again is the issue with them?
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From: Bucks County PA
But hey, Other than poor customer service, damaged items, no contact after the sale if there is an issue, lack of communication, slow shipping etc, they're top notch...... Even their employees post negative reviews about them...
Read some of their most recent glowing reviews at the bottom of this page:
https://www.sitejabber.com/reviews/corvettemods.com
Last edited by 76C3forme; Apr 20, 2021 at 08:50 AM.
4th Gear
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From: Eastern PA
Thread Starter
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Joined: May 2017
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From: Indiana
4th Gear
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From: Eastern PA
Remove the check valves where the thin metal pipes go into the exhaust manifold. Cap them. Follow it and you will get to the AIR diverter valves. Take that off. Somehow prevent the wires from getting wet. Part of the AIR system is the metal hose that goes to the cat. Cut that off and seal it at the cat. Remove the metal line.
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Joined: May 2017
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From: Indiana
I can’t remember exactly the diagram of the system, but I’m pretty sure the gasses come from the manifold and go through the pump into the intake. If you plug that hose I could see it getting too hot.
4th Gear
Joined: Aug 2025
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From: Eastern PA
Thanks I might have to do that. I got into a tough situation where I was hoping this would have waited another two months but the smog pump gave out and I wanted to drive the car a little more before winter. Shouldn't take too long and then I can work on removing the other components slowly over the winter.