For the first time since I've had my 9, which is only a month or so, I heard some knocking and pinging today. I heard it at when the engine was under load at lower RPM. Of course, as soon as I hear this I backed off the throttle as to not 'splode my motor. I wonder if I just got some bad gas. I should also note that I live in Phoenix and it was about 105 degrees at the time. But it's always 105 here so why is this the first time I've notices this?
I have been buying 87 octane but at least until I can get my PC-V installed, I'll be buying 92.
What do you guys use as far as octane goes? I am presuming the PC-V is going to be able to fix this, am I correct in this thinking?
Thanks for your help.