{"id":1705,"date":"2025-11-07T06:30:39","date_gmt":"2025-11-07T06:30:39","guid":{"rendered":"https:\/\/www.way.com\/ask\/?p=1705"},"modified":"2025-11-07T06:30:39","modified_gmt":"2025-11-07T06:30:39","slug":"is-nos-in-cars-illegal","status":"publish","type":"post","link":"https:\/\/www.way.com\/ask\/is-nos-in-cars-illegal\/","title":{"rendered":"Is NOS in cars illegal?"},"content":{"rendered":"

Here are the state rules you need to keep in mind:<\/span><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n
State<\/span><\/b>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Legality<\/strong><\/h5>\n<\/td>\n
\n
Other rules<\/span><\/b>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Alabama<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Alaska<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Arizona<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Arkansas<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
California<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Illegal in cars, particularly for traveling<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Colorado<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
If the kit is detached or the canisters are absent, then N\u2082O can enter<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Connecticut<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Vehicles can use only natural gas and hydrogen<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Delaware<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Cars can use NOS, but they cannot do so without canisters.<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Florida<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Vehicles, in general, must not emit NOS.\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Georgia<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Cars can use NOS, albeit without canisters<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Hawaii<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Illegal\u00a0<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Idaho<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Cars should certainly not emit NOS<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Illinois<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Only NOS cylinders may be transported, given that the valves are closed.<\/h5>\n<\/td>\n<\/tr>\n
\n
Indiana<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
No<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Significantly, no legal restrictions<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Iowa<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Has no limitations on engine modification<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Kansas<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
There are no limitations on engine modification<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Kentucky<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
No limitations on engine modification<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Louisiana<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
If the kit is in bad condition or the canisters are absent, then NOS is allowed to pass through.<\/h5>\n<\/td>\n<\/tr>\n
\n
Maine<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
\u00a0If the canisters are in bad condition or are absent, NOS is allowed to pass through.<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Maryland<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
If there is damage in the kit or the canisters are absent, then NOS is allowed to pass through.<\/h5>\n<\/td>\n<\/tr>\n
\n
Massachusetts<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Requires cars to reduce gas usage<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Michigan<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Cars may use NOS, however, for recreational purposes.<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Mississippi<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Allowed, yet, with no canisters.<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Missouri<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
There are no limits, particularly on engine modification, but certain counties demand emissions testing.<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Montana<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
No limitations, especially on engine modification.<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Nebraska<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Usage is certainly illegal.<\/h5>\n<\/td>\n<\/tr>\n
\n
Nevada<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Emissions of N\u2082O are comparatively minimal.<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
New Hampshire<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
While there are no limits on engine modifications in New Hampshire, cars made in 1996 and later must pass emissions tests.<\/h5>\n<\/td>\n<\/tr>\n
\n
New Jersey<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Legal in case of recreational use.<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
New Mexico<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
If traveling to Albuquerque from New Mexico, then emissions testing is mandatory.<\/h5>\n<\/td>\n<\/tr>\n
\n
New York<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Legal in case of recreational use.<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
North Dakota<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
No limitations on engine modifications for emissions testing<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Ohio<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
No NOS containers should be left open when driving or parking in locations that are open to the public.<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Oklahoma<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
There are no laws particularly limiting engine modifications or requiring emissions testing in Oklahoma.<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Oregon<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
While Oregon has no limits on engine modifications, some counties require emissions testing.<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Pennsylvania<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
NOS in your car is illegal. Also, bottles can only be inside a car if the system is off.<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Rhode Islands<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
No limitations, particularly on engine modification. However, there are fewer requirements for emissions testing.<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
South Carolina<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Neither emissions testing nor limitations on engine modification exist.<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
South Dakota<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Neither any emissions testing nor limitations on engine modification exist.<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Tennessee<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
N\u2082O use in cars has been restricted since 2006.\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Texas<\/span>\u00a0<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
No<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
No laws are specifically against NOS.<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Utah<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Vermont<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Virginia<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Yes<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
The NOS system can be set up as long as it is uninstalled and not easily usable.<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Washington<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Washington considers NOS legal for inhalation.<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Wisconsin<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Testing is surely compulsory in 7 counties<\/span>\u00a0<\/span><\/h5>\n<\/td>\n<\/tr>\n
\n
Wyoming<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
Unclear<\/span>\u00a0<\/span><\/h5>\n<\/td>\n
\n
No restrictions<\/span> in particular<\/span><\/h5>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Here are the state rules you need to keep in mind: State\u00a0 Legality Other rules\u00a0 Alabama\u00a0 Unclear\u00a0 \u00a0 Alaska\u00a0 Unclear\u00a0 \u00a0 Arizona\u00a0 Unclear\u00a0 \u00a0 Arkansas\u00a0 Yes\u00a0 \u00a0 California\u00a0 Yes\u00a0 Illegal in cars, particularly for traveling\u00a0 Colorado\u00a0 Yes\u00a0 If the kit is detached or the canisters are absent, then N\u2082O can enter\u00a0 Connecticut\u00a0 Yes\u00a0 Vehicles can… Continue reading Is NOS in cars illegal?<\/span><\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1705","post","type-post","status-publish","format-standard","hentry","category-car-repair-maintenance","entry"],"acf":[],"yoast_head":"\nIs NOS in cars illegal? - ask<\/title>\n<meta name=\"description\" content=\"Is NOS in your car illegal? The rules keep varying in different states, so you must follow the rules and make sure not to violate them.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.way.com\/ask\/is-nos-in-cars-illegal\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Is NOS in cars illegal? - ask\" \/>\n<meta property=\"og:description\" content=\"Is NOS in your car illegal? The rules keep varying in different states, so you must follow the rules and make sure not to violate them.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.way.com\/ask\/is-nos-in-cars-illegal\/\" \/>\n<meta property=\"og:site_name\" content=\"ask\" \/>\n<meta property=\"article:published_time\" content=\"2025-11-07T06:30:39+00:00\" \/>\n<meta name=\"author\" content=\"Gareth Newman\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Gareth Newman\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.way.com\/ask\/is-nos-in-cars-illegal\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.way.com\/ask\/is-nos-in-cars-illegal\/\"},\"author\":{\"name\":\"Gareth Newman\",\"@id\":\"https:\/\/www.way.com\/ask\/#\/schema\/person\/418ef9e86ed6bfcb5b45b3cdac1ab9c9\"},\"headline\":\"Is NOS in cars illegal?\",\"datePublished\":\"2025-11-07T06:30:39+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.way.com\/ask\/is-nos-in-cars-illegal\/\"},\"wordCount\":520,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.way.com\/ask\/#organization\"},\"articleSection\":[\"Car Repair & Maintenance\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.way.com\/ask\/is-nos-in-cars-illegal\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.way.com\/ask\/is-nos-in-cars-illegal\/\",\"url\":\"https:\/\/www.way.com\/ask\/is-nos-in-cars-illegal\/\",\"name\":\"Is NOS in cars illegal? - ask\",\"isPartOf\":{\"@id\":\"https:\/\/www.way.com\/ask\/#website\"},\"datePublished\":\"2025-11-07T06:30:39+00:00\",\"description\":\"Is NOS in your car illegal? 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