Hey guys. Forgive any oversight and feel free to ask questions if you need more info.
TYPE OF STUTTER/STUMBLE
Steady throttle/Increasing throttle/Both: Both. More noticeable at increasing throttle. Steady throttle makes my fuel economy gauge wag back and forth a tic or two like a flag in the breeze.
MODS
Intake: Cobb SF (no air box) w/ Gimmick turbo inlet
Exhaust: Tomei EL, Tomei UP, Cobb DP, Cobb turbo-back exhaust
Fuel: ID1000's, Aeromotive 340 (installed 3k miles ago), no aftermarket FPR (93 octane pump gas)
Turbo: Blousch 440XT (8 cm inlet) with FMIC & Perrin BPV - Less than 10k miles on the block as a whole. Turbo, headers, injectors have about 5k.
Engine Management: AccessPort
Tuner and revision of tune (if you don't mind): Procom Racing Protune by Lou (in person). Last tuned & dyno'd July 9, 2016.
MAINTENANCE
Sensors changed: None
Plugs changed: No. NGK 1-Step Colder currently installed w/ 10k miles.
Coil Packs changed: No
OTHER SYMPTOMS
Check Engine Light: No
Etc: Only happens under light throttle increase or steady light throttle (maintaining speed on residential street). Hard acceleration is much less prevalent (so far). Car stutters more noticeably at low rpm's on residential streets than at highway speed.
RESULTS
What has and hasn't worked for you: Let the car rest overnight. Will fill up with fresh fuel later today. Planning to reset/reload tune if no change tonight.
If something worked, how long has it been working for: Nothing yet.