question about emissions

i have a 98 gp gtp.i have a cone filter on the end of the stock intake tube,will it pass emissions or am i gonna need to put the stock box on to make it pass? i live in north carolina if it helps at all.my moms car has the same thing cause it helps gas mileage some so we needed to know thanks.

Most states have a visual portion of the inspection process. Since the air filter box isn't part of the emissions system, as long as the IAT sensor and such are still all hooked up, you may still pass. It may all depend on the individual inspector and how technical he/she wants to be.

i have a 98 gp gtp.i have a cone filter on the end of the stock intake tube,will it pass emissions or am i gonna need to put the stock box on to make it pass? i live in north carolina if it helps at all.my moms car has the same thing cause it helps gas mileage some so we needed to know thanks.

I would just throw the box back in until the testing is over just so your set. Theoretically yes emissions will be fine but they can still nab you on not using factory parts.

I'm so glad that alabama has no emissions tests whatsoever. None of the trucks I have had would pass. lol. But like the other guy said, if its not too hard I would just go stock for the test. On GP's its fairly simple to swap back. You might could just zip tie the box in for easier removal after the test. You could call anonymously to one of the testing agencies saying you wanted to know if having the cone filter is legal where you are. It should be cause like b naylor said it isn't part of the emissions. Most of the time, the added air helps emissions cause the engine can perform combusion better resulting in less unused gas in the exhaust.

IMO it is best not speculating since states and even counties within a state vary on safety and emissions inspections. According to the OP's profile he is in North Carolina. North Carolina employs the same 1996 and up odb-ii emissions testing as Texas as do many other states. See link below. The most surprising being green state New York since they switched over too. All you need to do is get it scanned with an odb-ii scanner that has emissions readiness capability. If the IM flag is good then you will most likely pass the emissions inspection.


North Carolina

Effective July 1, 2002, all 1996 and newer gasoline-powered vehicles registered in an emissions county are required to receive the On Board Diagnostics(OBD II) emissions test.

Click here (http://www.ncdot.org/DMV/moving/newnc/emissions.html)


I just passed mine in January with all external mods fully visible including my Thrasher CAI.


Forgot to mention states like New York require the inspector to visually check for a CAT converter even though it passes the obd-ii port standard. I don't recall if the Texas inspector checked mine which I do have installed.

Here is a link concerning North Carolina odb-ii emissions testing and what the inspector may do, if applicable in the respective county.

Click here (http://209.85.173.104/search?q=cache:TcJ5gIfrfqAJ:www.ncdot.org/dmv/vehicle_services/emissioninspection/regulationsmanual/download/OBDpowerpoint2008.ppt+north+carolina+emissions+ins pection+and+cold+air+intake&hl=en&ct=clnk&cd=1&gl=us)

Don't know if this is applicable to North Carolina but this is the guideline in Texas concerning aftermarket intake systems. Generally, it should be C.A.R.B. approved and have an E.O number or at least no "off road use only" sticker.


Texas Department of Public Safety

Aftermarket Air Intake Systems (AIS) and Thermostatic Air Cleaners (TAC)
1996 and newer vehicles do not have a Thermostatic Air Cleaner (TAC) system. The TAC system went away on 1996 & newer vehicles, because these vehicles are equipped with OBDII (On-Board Diagnostics – Second Generation) computer systems and these vehicles have more sophisticated fuel injection systems and emissions control systems, so there’s no need for a TAC system. There are several different brands of aftermarket open-type air filter/intake systems by K&N, Airaid, AEM, etc, so these are OK to install on any vehicle that did not come factory equipped with a TAC system and you will pass the visual emissions component inspection.

NOTE: If the air intake system reads "For Racing Purposes Only" or "For Off Road Use Only" then it is not intended for use on public roadways and is not street legal. If the air intake system is CARB approved and 50-state legal, then it is street legal in all 50 states.

1995 and older vehicles that are equipped with a TAC system are required to have all the components in place in order to pass the visual emissions component inspection, which is part of the annual safety inspection. The TAC system consists of the enclosed air cleaner/filter assembly and a heat shroud at the exhaust manifold and then there is also a heat duct hose that connects from the heat shroud to the air cleaner assembly. Also, some of the TAC systems had a fresh air duct hose that attached from the front or side of the air cleaner assembly to either the front or side of the vehicle. The TAC system is a closed-type air cleaner/filter assembly and it was designed to reduce Hydrocarbon (HC) and Carbon Monoxide (CO) emissions during cold engine operation, so if your vehicle came equipped with a TAC system and if it was removed and replaced with an open-type design air filter/intake assembly, the vehicle will fail the visual emissions component inspection.

Just some other issues that may or may not apply, in NY for example there is no allowable underhood alterations from stock that could potentailly cause an emissions operational failure,( this is vague and almost unenforceable as the vehicle would set a code for this anyway), all components must be in place IE: egr, cat, evap components, gas tank neck restrictor, emssions label even has to be in place. This focuses on 96 up. 95 down is another issue, especially in the 5 Boroughs of NYC and LI where an IM 240 dyno test is done on 2 wd non obd11 vehicles.

thanks for all the reply's.my gf lives about 2 seconds from the inspection station,so i could just swap the stock box back in there before i go and then id have no worries.