hope this is in the right place here goes iv got a 2003 wrx sti ppp it's got a slight stutter under 3k when u press throttle all the way to floor but if I unplug front lamba sensor the car is very smooth runs perfect does this sound like a faultly lamba or something else please help edited also the revs go very low to around 2/300 when coming to a stop with lamba plugged in

Hi mate thanks for reply I believe it's still on the original ppp map but could be wrong