Need tips on spark plus & fuel injector
I was thinking to replace the spark plugs, like people said replace them every 3000 miles. How does HKS M-series spake plugs sound like, do I still to readjust the cap or they will come adjusted and ready to fit.
How about fuel injectors, do we really need to change those, do they even require high performance upgrade?
So please leave me some comments I'll be appreciate. Thanks.
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