Unlock the true potential of your BMW M3 or M4 with Pinnacle Tuning's S55 engine tuning solutions. Built on dyno-tested calibrations and real-world driving, each stage delivers strong performance gains while maintaining reliability - but escalates in complexity from software-only to high-power hardware builds.
 
PRICE IS FOR SOFTWARE ONLY
 
Stage 1 – Software-Only (~525–545 hp)
Core Focus: Turbo/map remap for smooth, high-power delivery without lifting the bonnet.
Key Details:
Retains stock turbo, intake, exhaust, intercooler, and fuel system
+80–100 hp and +130 lb‑ft torque via ECU tuning
Safe AFR and ignition control across the full rev range
Maintains factory drivability and emissions
Ideal For: Street-driven cars seeking serious power without modifying hardware.
 
Stage 2 – Software-Only (~600–630 hp)
Core Focus: Add-ons to thermal and exhaust flow to sustain higher power.
Recomended modifications:
Decat or high-flow downpipe for improved turbo efficiency
Upgraded chargecooler or front-mount intercooler for cooler intake temps under load
Benefits:
Sustains higher power across repeated track runs
Helps thermostat and turbo spool consistency
Ideal for performance driving and occasional track use
 
Stage 3 – Software-Only (~650–700+ hp)
Core Focus: High-flow hybrid turbo upgrade with comprehensive cooling to unlock maximum street-track potential.
Recomended modifications:
Premium hybrid turbochargers (e.g., Turbo Dynamics CNC builds)
WGM-grade high-flow downpipes and optional cat-back
Big chargecooler + intercooling piping kit for stable intake temps
Recommended Supporting Mods:
Crank hub upgrade or capture plate to address S55 crank flange weaknesses
DCT / xHP transmission flash to safely handle increased torque
Optional oil, fuel, and transmission cooling upgrades for reliability
Ideal For: Enthusiasts demanding high-horsepower drivability for road and track.