Honda Del Sol with aftermarket intake failed for high NOx levels.

1993 Honda Del Sol High NOx level. Could my cold air intake cause that?

6 months ago, my Honda passed the smog test with no problem with the OEM intake unit on it. I tried again a couple days ago and the NOx level was high and it failed. Would me putting an aftermarket cold air intake on the car affect that in any way?

Answer:

Having an aftermarket intake manifold on your Honda Del Sol should not cause high NOx... but we can not rule it out. If your Honda's high NOx is due to a lean fuel condition it might be possible that the aftermarket intake unit is allowing more air to enter the combustion chambers than the ECU (engine control unit) is programmed to allow, as well as the MAF (mass air flow sensor) calibrated to measure. If you have the original air intake unit we'd recommend installing it, driving your Del Sol for a week or two (for the ECU to learn new fuel trims) and than get a smog check re-test. Good luck. Joe - SmogTips Support

posted by SmogTips Support

Related questions and answers you might find useful:

1997 GMC SAVANA VAN lowest cost station. by Mary

1997 GMC SAVANA VAN by Mary

How do I pass the emissions test being that my car had work done last week and it's not registering by Quinndellia

Because my car had memory loss due to a battery being a change of what do I need to do to pass the vehicle test by Quinndellia

I store USDT in my wallet on OKX and have my seed phrase (clean party soccer advance audit clean evil finish tonight involve whip action). What is the process to send my USDT to Binance? by Skye