BryanH19

So today I finally fixed my o2 sensor which was messing up the whole car it was making it misfire and go into limp mode. So I bought a Denso one and so far no more check engine light but the only issue with the car is that 4K up it has a bit hesitation and kinda goes but no check engine light. My instant response thought was I probably need new spark plugs (keep in mind I did run the car for about a week with open headers to bypass my o2 sensor. So what should I start checking?