Hi Hypro, which SC you visit to install the orifice valve?? I did went to the Jln 227 PJ SC while mentioned this things in 1 month back they said they never heard of such things! suck~

I need to service for my 10K mileage already, since the Jln 227 is closing down then need to find another SC which near around PJ. Can you share how the orifice valve will be install anything i need to mention specifically in order to get the consultant understand my concerns on the knocking sound remedy.