H22 civic NOx help
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Honda-Tech Member
Joined: May 2003
Posts: 222
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From: Santa Rosa, CA
H22 civic NOx help
I have a 94 jdm h22 with a dc header and a USDM p13 high flow cat. I have 92 cdm vx .
so i went to get my bar sticker and i go to do the sniffer and well look. i passed HC's and CO's but NOX is another STORY
MAX GP MEAS
807 2014 2667 15MPH
746 1814 1024 25MPH
My egr must not be lifting to let exhaust in I think. i need help.
IS THERE A SHOP OR PERSON HERE THAT I CAN PAY TO HELP.
so i went to get my bar sticker and i go to do the sniffer and well look. i passed HC's and CO's but NOX is another STORY
MAX GP MEAS
807 2014 2667 15MPH
746 1814 1024 25MPH
My egr must not be lifting to let exhaust in I think. i need help.
IS THERE A SHOP OR PERSON HERE THAT I CAN PAY TO HELP.
Honda-Tech Member
Joined: Mar 2004
Posts: 8,159
Likes: 1
From: Roseville, CA
Re: H22 civic NOx help (greatbiggiants)
It was brought to my attention that high NOx is caused by high combustion chamber temp. You could lower it by retarding timing or using a little higher octane fuel.
Phil
Phil
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