fuel problem... help!

[koUki20]

i was wondering anyone might have a clue of wut da problem is. everytime i step on the gas, da car starts to sputter. i know im not running rich cuz i installed air/fuel gauge. it acually runs really lean wen i step on da gas.(reads below lean on gauge.) but on idle, im getting da right amount of fuel. please help, i search da forum, and still no luck. thanks

[180fan]

cts or mafs need replacement or tps need adjustment are almost always the culprit. Don't rely on that a/f gauge they're usually not accurate unless it's a wideband.