Hi Everyone!
I have just installed nissan 555 CC injectors on MY97 WRX. At the moment the car is idling funny, not stable. It keep going from 600 to 800 rpm then drop down to 600 rpm. Could this because the fuel is too rich?

Previous dyno tune i had:
Unichip, 3" all the way, vf 34, HKS CAI, front mount, BOV

Recently added:
Walbro fuel pump (working fine) and nissan 555 CC injectors.

My question is:
1. Could this is bc the car is running too rich (i had dirty injectors before)?
2. Could it be because i soildered the plug of the injector the wrong way?

 

Make sure your lambda is ok and reset the ECU after these mod's
it doesn't make a difference which way the connectorplug is as far as i know.
I ran 550cc first and could only fit the connector upside down but that didn't make a difference. Or maybe i was just lucky, i had them only for 2 months

 

Thanks David.
I will double check for air leak again. And will reset the CPU as I havent reset it yet . Hopefully this will solve the problems.

 

Still having problem!!! Checked:
1. Air leak
2. Injector leak
3. Disconnected Unichip
4. Replaced fuel filter
5. MAF reading is OK.

Please help me!!!! Urgently!!! Havent drive my car for 4 weeks.