ok so got my swap started but bogs down after a few seconds. almost like to runs out of fuel. now i searched and it seems like vats, but my computer and stand alone harness are from nelsons. with no second o2, no vats. i haven't hooked up the tach or speedo yet. but was also thinking the my stock 98 c1500 4.3 fuel pump wasn't strong enough. i will be checking fuel pressure tomorrow. (gotta bring my gauge home from work) oh i also think i might of messed up the o2 sensor wiring. (aftermarket sensors) <~ would that cause that? maybe just second guessing myself .