Thread: Knock Retard on Stock 99 GTP

All cars knock from factory. That's normal. Good? I would say no. Something to stress about? Nope. Install the headers and you'll see that 2-3 drop down to maybe 0. You have any modifications done to the engine?


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Originally Posted by Bluemagic

All cars knock from factory. That's normal. Good? I would say no. Something to stress about? Nope. Install the headers and you'll see that 2-3 drop down to maybe 0. You have any modifications done to the engine?


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Thanks for the replies. I have not done any modifications to the engine yet. I am currently running the Walmart 93 octane gas in it. I'm not convinced to purchase the Speed Daddy headers yet because I don't know how reliable they are. It would be great if I did have 0 kr.