TYPE OF STUTTER/STUMBLE
Steady throttle/Increasing throttle/Both:Both at 10psi
MODS
Intake:stock
Exhaust:stock
Fuel:94 octane
Turbo: ihi vf33 and ihi vf33
Engine Management: stock
Tuner and revision of tune(if you don't mind): stock 99 b4 rsk rev b
MAINTENANCE
Sensors changed: none
Plugs changed: none
Coil Packs changed: none
OTHER SYMPTOMS
Check Engine Light: no
Etc: