right my xr2 turbo, mfi set up was running sweet monday but tuesday decided to cough and bang on boost, well under any load at all, fitted new plugs, leads, dizzy, cap and arm, coil, tps, act sensor, checked for air leaks nothing, it stinks of fuel from the exhaust and plugs are black but i can adjust the idle fueling but still does the same under load, think its basically overfuelling on idle then massivley under fueling under load. My only things to change are injectors and metering head so any ideas before i go get any bits

 

let me know how you get on, i have the same with my s1. replaced everything bar the injectors now. i dont know what like it is on the road as its on stands. misses and splutters when trying to rev her....doin my head in