Issues = mechanical issues from normal wear & tear. Unless you've completely torn down, completely checked, and rebuilt your motor: there's a chance something is less than perfect. Pushing nitrous, more fuel, and larger explosions through the engine could trigger a failure. Shiner is saying that's easier to stop a car on rollers if such a thing happened.
Wideband O2 sensor [aka: air/fuel ratio (AFR) sensor, continuous lambda sensor, lean air/fuel (LAF) sensor] is a tool that better monitors your air/fuel ratio. The stock O2 sensors on your car only measure a small range around the stoichemetric ratio of 14.7. A wideband can go read much farther: and with tuning, you are often looking for a different/lower AFR than the "perfect" stoichemetric ratio. The wideband helps you "see" down that far so that you can keep tuning without leaning out (too little fuel) the engine. :yelpleased:
FLASH = 98 V6, chrome yellow, black & blue accents, 146k daily driver POWER
: divorced exhaust with glasspacks; BBK CAI, TB, UDPs; (shift kit in the garage) STYLE
: black headlights, black taillights, black grille, black hood pins, black window tint, blue hood & side scoops, blue billet fuel door, interior billet, 12000k HIDs RIMS
: XXR 006 black spoke with blue lip; 18x8.5 front, 18x9.5 rear TIRES
: BFG KDW/2 245/40R18 front, 275/35R18 rear