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+95 HP
2024 Alfa Romeo Giulia Quadrifoglio - Twin Turbo V6 600WHP Italian Stallion
2024 Alfa Romeo Giulia Quadrifoglio (Quadrifoglio)
About This Build
The Giulia Quadrifoglio's 2.9L twin-turbo V6 is a Ferrari-derived masterpiece that responds incredibly well to bolt-ons and a tune. With a simple catless downpipe setup and an aggressive ECU calibration, you unlock 600WHP from this already potent platform. The chassis dynamics are world-class - this car embarrasses M3s and C63s through corners while matching them in a straight line. The ZF 8-speed shifts faster than any DCT and handles the extra power without complaint. This is the ultimate sleeper sedan for those who appreciate Italian engineering.
Performance Comparison
Factory
HP505
TQ443
0-603.8s
Modified
HP600
TQ560
0-603.2s
+95
HP Gain
+117
TQ Gain
-0.6s
0-60
Modifications
Eurospeed Catless Downpipes ($1800), BMC High-Flow Air Filters ($280), Eurospeed ECU Tune Stage 2 ($1500), CSF Aluminum Radiator ($850), Forge Motorsport Intercooler Upgrade ($1400), Turbosmart Blow-Off Valves ($380), NGK Iridium Spark Plugs One-Step Colder ($90), Goodridge Stainless Brake Lines ($250), Ragazzon Valved Catback Exhaust ($1800), Michelin Pilot Sport 4S 245/35R19 Set ($1400)
Build Stats
Total Cost$7,850
Published3/20/2026