Found my recent dyno run that had the exhaust gas readings. Now here in New Zealand we don't have emission testing on our yearly vehicle testing, so I wanted to see if I could match up with people who get emission tested, see if its a similar result.


_________________Idle__________4th gear 50km/h cruise_______4th gear 100km/h_____Full Throttle
CO.........................0.17% Vol.........0.86% Vol...............................0.6% Vol.....................7.31% Vol
CO cor....................0.20% Vol.........0.89% Vol...............................0.63% Vol....................6.16% Vol
HC.........................173 ppm Vol........144 ppm Vol................................98 ppm Vol...................175 ppm Vol
CO².........................12.5% Vol...............13.7% Vol.............................13.8% Vol....................10.5% Vol
O²...........................3.11% Vol...............0.8% Vol...............................0.73% Vol...................0.12% Vol
LAMBDA.................1.157................1.006 ......................................1.013 ........................... 0.805

say what??!!

Here's an emissions test result from a few years ago. Stock 7A-FE



This post has been edited by bryanf: Jul 14, 2024 - 10:58 AM

Yea, don't know if anybody in the US bothers with the tailpipe readings. For cars 96 and newer, the emissions aren't even checked during inspection - inspector only hooks up to OBD2 port to read the car computer reported readiness monitors. For pre-96 cars, inspections stations are supposed to check emissions, but it's certainly nothing more than idle readings, certainly not at speed on a dyno.

Interesting info to have nonetheless.

Hmm interesting.

From memory, the guy was pretty impressed with my results