πŸš— Golf Mk7 GTI πŸ’΅ $750 ECU: LOCKED MAP: 1 Β· Stock REP: Civic Bait πŸ”Š off
STEP 1πŸ”Œ BENCH
STEP 2πŸ—ΊοΈ MAPS
STEP 3πŸ“ˆ DYNO
STEP 4πŸ”₯ STREET
EARN🏁 RACE
SPENDπŸ› οΈ SHOP

SimosTools β€” Flash Sequence

Plug into OBD, slurp the cal, unlock writing with the ECM3 boot patch, then flash. Flip the switch patch on for 4 stalk-selectable maps.

4 stalk maps

Bench Log

Quick Presets Golf Mk7 GTI Β· IS20

πŸ›’οΈ Diesel: no spark = no overrun crackle, and the fuel buttons are diesel grades. Load 🍿 Hardcut Popcorn β€” fuel cut on the limiter makes it bang on the rev limiter, Street & Race, with flames and a cloud of soot.

Power Maps

Boost Target20.0 psi
Stock peak β‰ˆ18 psi.
Ignition Timing (peak Β°)12Β°
More advance = more power, until knock sensors pull KR and your pistons file for divorce.
Lambda Target (Ξ»)0.83
Rich = cool & safe. Lean = power & heat β€” too lean is an expensive "tink."
Fuel
Corn = knock headroom + cooler charge. Also: many gas stations in your future.

πŸŽ† Pops & Bangs overrun / decel

The whole reason you're here. On lift-off the ECU dumps fuel & yanks spark so it lights off in the exhaust. Crank for fireworks β€” but your cats & turbo will glow.

Overrun Fueling35%
Fuel dumped on decel β€” the pop.
Overrun Spark Cut30%
Cut/late spark fires downstream β€” the BANG.
Throttle Plate Hold25%
Keeps air moving β€” crackle duration.
PREDICTED BURBLE INDEX
β€”

Dyno Pull

Flash a tune, then pull.
PEAK POWER
β€”
PEAK TORQUE
β€”
KNOCK RETARD
β€”
degrees pulled
EGT
β€”
pre-turbo
RELIABILITY
β€”
BURBLE
β€”
sound score

πŸ”₯ The Street switch patch off

GTI
850 RPM
N
STREET CRED0
πŸš” KAREN-O-METER0%
πŸ§”
DYNO DAVE
Aight, plug 'er in. Let's wake the neighbors.

Throttle

Hold the loud pedal to climb the revs, then let off β€” the lift is where the magic happens. Spectators tip cash for big bangs.

Switch Patch β€” Live Maps

Tap a slot (or 1–4) to swap calibrations. Assign drops your bench tune into the active slot.

🏁 1/4 Mile β€” Friday Night

SPACE (or the buttons): first press = LAUNCH on green, then tap to SHIFT near redline. Beat the rival's ET to bank the purse. Don't red-light, and don't money-shift a fragile motor.

Pick a rival below.

Opponents

Your Car

Flash a tune first.

🏠 Garage & Dealer $750

Buy cars, then hit Drive to switch. Every car keeps its own turbo, bolt-ons and tune β€” a new ECU needs its own flash.

πŸŒ€ Turbos β€”

Own several, swap for free. Bigger turbo = more top end and more lag. Hybrid needs metal charge pipes; full frame also needs an intercooler and the fuel upgrade (forged internals strongly advised).

πŸ› οΈ Bolt-ons β€”

Fitted to the car you're driving. The catless downpipe is the loudest thing money can buy β€” and the fastest way to meet the local PD.

Parody bench sim. Real Simos18 flashing can brick an ECU, overrun fueling genuinely melts cats & turbos, and street racing is a great way to lose your license. Don't tune from a webpage. πŸ”§