This probably has happened before to someone and hopefully someone can point me in the right direction.
Last month I got my Power FC installed and car tuned at Ultimate. When it was tuned the guys noticed the engine light flashing, and tuned it for the knock the Power FC was telling them. Now under slight load, the light flickers, but no I can't hear any sign of knock in the engine.
They did suggest to run a few bottles of injection cleaner through the system, but that hasn't made any difference.
I also did some research but still can't put any one finger on a problem. So any advice would be appreciated on how to fix it. They did offer a retune at no extra cost, but I want this problem fixed before it goes back.
Cheers guys.