Read to take the 3.5 to the next level? The ATP Twin turbo upgrade is a direct bolt-on upgrade. Their +2 size Garrett flows 200-250HP more than stock turbos. All new Garrett CHRA (Center Housing Rotating Assembly) with re-machined stock end housings. Core exchange required.

Stock Turbine
-Wheel Inducer: 40mm
-Wheel Exducer: 34.5mm

Stock Compressor
-Wheel Inducer: 36.3mm
-Wheel Exducer: 49mm

Upgraded +2 Turbine
-Wheel Inducer: 50mm
-Wheel Exducer: 43.5mm
-Range: New Series Garrett GT Journal Bearing

Upgraded +2 Compressor
-Wheel Inducer: 43.4mm
-Wheel Exducer: 56mm
-Range: New Series Garrett GT Journal Bearing

Application Notes
One coolant/water line requires minor trimming to install provided steel braided line.