Good morning, Mr. Kilmer. I recently changed my 09 civic si's spark plugs to the NGK performance…

mattymatt

Good morning, Mr. Kilmer. I recently changed my 09 civic si's spark plugs to the NGK performance ones and reoiled the K&N air intake. The engine suddenly jumps 1000rpm + lags before consistently accelerate when i press the gas at 2000rpm. I pulled out the MAF while the engine is running; it stayed running. I cleaned it with CMC. The problem persists. The engine codes are P0113 and P0102. ECU is reflashed by Hondata. Should I just reinstall the intake or replace the MAF? Thank you!!

Comments (3)
No. 1-3
Carquestions
Carquestions

Put the car back to the condition it was prior to the problem - use whatever parts were on it at the time

mattymatt
mattymatt

Should I just readjust the K&N intake? It was already installed before.

Carquestions
Carquestions

If you want to be sure put back the old plugs and intake - if she runs well then you'll know what the problem was