Well everyone has been telling me dude its so your o2 sensor, well today got it installed, and my engine still sputers, still goes slugish until i hit VTEC at around 5000rpm, not fun at all to drive, so i want to know what else could it be, one part i forgot about was the TPS, i should have spend the $120 on that, my o2 sensor was not that bad. so is this for sure what i need to replace, also note that no diagns. comp can link to my ECU, "Linking Error" always appears, so how can i know for sure what the problem is, besides this, im saving up for 3-4-5 Syncro kit,and other small parts, trying to fix the mechanical stuff first before i move onto some Suspension parts.