S13 engine concerns

[I Am Chris]

Okay so I am kinda new here for posting so I am hoping some of you guys can help me out.

First of all I am having cold start up issues with the car but not too bad. The main concerns I am having though is the idle of the motor when warm. When the car reaches operating temps the motor has a rough, possibly hunting, idle. Also when the car is warmed up I have noticed that it is running really rich and not only that but it is also backfiring when the motor is revved up. I have no clue at where to even start with these issues so let me know what you all think.

[projectRDM]

Coolant temperature sensor. The ECU is still running in the cold fuel map when warm. Though not guaranteed, I bet a good bit that's the culprit.

[fukusdm01]

I had a similar problem, found out that when we did the swap we rewired the Coolant Temp Sensor on the ECU wrong.

[Ceepo]

^are you feeling okay projectRDM, but exactly as he said the ECU coolant temp sensor

http://www.enjukuracing.com/images/oemsrcoolanttemp_full.jpg

[I Am Chris]

Yea I just changed the CTS yesterday with no luck.

[DataXUnknown]

Could it be a timing issue? Just throwin that out there.

Is it a SR or KA? Stock or modified?