While tearing down my top end today, I removed most of the smog equipment. The smog pump/thermactor, tubing, and the pipe that connects to the h-pipe are all out. The only thing remaining is the part the conencts to the back of each head. Should I remove this as well, and just plug up my new heads? The reason I am asking is because I heard this is part of the EGR system as well.
Question about smog delete
- Thread starter 1990LXDropTop
- Start date
89MustangGX
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Yes, if everything else is gone, plug the heads. Leaving the tube there will do nothing for you, as it connects to nothing other than the smog stuff you removed. Be sure and plug the vacuum lines, don't want to forget about those!
89MustangGX
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1990LXDropTop said:
Sure, no problem. All it would do is either sit there open and leak exhaust, or be plugged up and take up space. Might as well get rid of it it!
smog pump introduces air into the cats once warm and air further upstream during cold operation to help improve emissions.dksStang said:besides eliminating the smog pump to reduce weight and free up some hp why do we do this? i have not done so yet but would like to if it truly helps and what exactly does the smog do? thanks
89MustangGX
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dksStang said:besides eliminating the smog pump to reduce weight and free up some hp why do we do this? i have not done so yet but would like to if it truly helps and what exactly does the smog do? thanks
That's basically it. A little weight and less stuff up front.
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