P0170

[trafficlightguy]

I have a 1997 ex with headers and performance exhaust and free flow cat

There are no vacuum leaks checked with starting fluid
Replaced primary 02 with honda replacement
Installed exhaust gasket on head and mid point on header
New fuel filter

Any ideas

Cause I give up

 

[trafficlightguy]

no ideas anybody

 

[Mechanic kid]

We'll that code means there is a problem with the air to fuel ratio. The computer isn't getting the right mixture. It also indicates that the fuel trims reached their limit of adding fuel while trying to compensate for a rich condition. When the fuel trims reach their rich correction limit, the PCM sets a P0170, indicating a problem or malfunction in the fuel trims. causes could include a vacuum leak, Possibly bad O2 sensor. Oil contamination in MAF connector or O2 sensor connectors. Also check ignition coils, cam and crank sensors, and MAF (Mass Air Flow) sensor.