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So after I get rid off the ipe f1 exhaust and swap back to oem exhaust, the car seems have a new issue. I can certainly feel the extra power at high end. However, when I punch the gas really hard, from stop or basically any mph, it down shits clean and rpm goes up at usual speed, however I don't feel the power kick in, maybe after about half a second to one second, I can feel the power kick in, normally I can feel the power around 6K rpm. I don't think it would be a clutch slipping problem because the rpm would have gone up crazy to redline. Besides, when I had the ipe exhaust, this issue never happened. It shouldn't be a coil problem because I can feel the full power at higher rpm and I have new spark plugs.
AJ from Ess think that maybe the o2 sensor got damaged from swapping the exhaust.
Now I am so lost, ever since I got the supercharge done, never had a day I can feel the full power. Have you guys experienced same issues? Or do you guys have any suggestions? Thx!