Why smog block off plates

Site Sponsors Site Sponsor Inquiries. Smog block off plates. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Aug Texas. Anyone using them? Do they help in anything? I really don't understand hoe they work, and in what do they help. Mar Washington.

The smog system runs exhaust back through in order to reduce emissions. Removing it gains minimal power, shaves a little weight, but the primary reason is the smog system throws off A:F readings from dyno tuner probes. If you want the most effective tune possible racing and whatnot then it makes that process easier. Feb 28 23 San Francisco. I installed them on my recently purchased , it ran like shit when I bought it.

Asked 6 years, 2 months ago. Active 3 months ago. Viewed 29k times. Improve this question. Your profile says you are in Los Angeles, CA. There are state and federal laws against tampering with emission control systems; I am not a lawyer but it would seem to me that installing this device on your bike would be illegal. Driving a mph is also illegal but that doesn't stop me. Well, you asked about detriments, and being illegal is certainly a detriment, at least in my book.

I don't really want to get involved in an argument with you so I'll leave it at that. Add a comment. Active Oldest Votes. Here is what the Graves Motorsports web page has to say about it: The air induction system AIS burns unburned exhaust gases by injecting fresh air secondary air into the exhaust port, reducing the emission of hydrocarbons.

There are three reasons why you want to remove the air injection system from your bike; If you are using your motorcycle on a closed course racing, track days, etc. The air injection system pumps fresh air directly into the exhaust stream in order to burn off any unused fuel.

This addition will typically remove the majority of popping on deceleration that can be experienced with un-burnt gasses within the emission charcoal chamber. Note: Proper tuning may be needed and this is general feedback. Improve this answer. Please wait Can not use our racing mufflers on public roads in Japan.

There are three reasons why you want to remove the air injection system from your bike: 1. If you are using your motorcycle on a closed course racing, track days, etc. The air injection system pumps fresh air directly into the exhaust stream in order to burn off any unused fuel.

This addition will typically remove the majority of popping on deceleration that can be experienced with un-burnt gasses within the emission charcoal chamber.