Covering the air filter slightly with a plastic bag to pass emission test

[marryson]

I just came up with this crazy idea..... my car keeps failing NOx which is caused by running to lean. (too much air, too little fuel). If i cover the airfilter slightly with a plastic bag, restricting the amount of air going into the engine. thus making the car run richer. and hopefully reduce the NOx reading. What do u guys think? will it work? what are the dangers?

[jesse_s13]

:picardfp::picardfp::picardfp:

[marryson]

:picardfp::picardfp::picardfp:

Just told my friend about this shit. same reaction lol :picardfp: is correct..... but in theory I dont see why it wouldnt work

[Croustibat]

because your ECU measures air that enters and computes how much fuel it needs to send based on its mapping ... you are not running an alpha-N management system that computes how much fuel it has to send depending on the throttle position.

You are failing emissions because your car has a problem, most common MAF system related problem is boost leak, coated MAF, dead lambda sensor, dead temp sensor, worn engine ... or just dead cat.

[satek]

Retard your timing...worked for me.

[project-c2]

Adjustable fpr?

[marryson]

Adjustable fpr?

whats fpr?

[Frank_Jaeger]

Fuel pressure regulator.

[marryson]

Fuel pressure regulator.

I dont think mine is adjustable... but I passed the test today after running seafoam thru brake vacuum and intake. reduced nox by about 15%. I also changed the fuel filter too. and no i did not use a plastic bag to cover the filter lol