E85 calibration for emissions testing

[rkreigh]

Originally Posted by Corbusa

Guys excuse my ignorance , I do not understand how the emissions work . My question is . If all that is needed is to pass the test once a year could some one just rig up some sort of Fresh air injection right into the exhaust where the testing is being done? ( a 30 galon air tank that kicks on at a certain rpm?) would that throw off the readings and show cleaner air? or a spark plug in each exhaust pipe wired to a coil to burn any extra fuel ? sorry for the dumb questions .

because of the duration of the test a 30 gal air tank wouldn't flow enough volume and you'd like need a pretty big air pump to put enough into the exh to clean it up and fool the testing.

a good running stock LT5 usually just needs to have the injectors working right, fresh plugs, air cleaner and good cats to pass

many times a "spirited run" will clear out the carbon deposits from cars that don't see enough time at wide open throttle and the LT5 tends to "carbon up" from lugging around at low rpms. spiking the gas with a little alchy and emissions test products can help too.

try running some BG or techtron through a tank of gas prior to doing the test and change over to fresh oil as it does help if you are close but not passing.

[mike100]

The emissions guys aren't going to fall for the oki-doke/diluted with air trick. If your gas sample is over 5% O2 in Cali- that's a fail just for that.

Like if the muffler is full of holes or you thought you'd be slick and hold the probe 3 feet behind the tail pipe or something.