Garrett GT Turbos
 

Garrett claims the GT series turbos are much better then the old school T series.  They claim the GT turbos will spool about 1,000 rpm lower then the previous generation.  Here are the Specs of each turbo and compressor map.  I also included the 1UZFE to 3UZFE Airflow.

Here are the Air Flow Chart for the UZFE:
Here is the spread sheet of 1UZ to 3UZ Air Flow Chart

 

Engine Liter Cubic Inch Air flow Static 6 psi 8 psi 10 psi 12 psi 14 psi 16 psi 18 psi 20 psi 22 psi 24 psi 26 psi 28 psi 30 psi 32 psi 34 psi
1UZFE (AirFlow) 4 244 367.26 cfm 35.74 39.08 42.633 46.044 49.4905 52.937 56.3835 59.83 63.2765 66.723 70.1695 73.616 77.0625 80.509 83.9555
2UZFE(AirFlow) 4.7 286.7 431.38 cfm 42.03 45.9 50.08 54.05333 58.07833 62.10333 66.12833 70.15333 74.17833 78.20333 82.22833 86.25333 90.27833 94.30333 98.32833
3UZFE (AirFlow) 4.3 262.3 394.66 cfm 38.45 42 45.81 49.44667 53.12667 56.80667 60.48667 64.16667 67.84667 71.52667 75.20667 78.88667 82.56667 86.24667 89.92667
Pressure Ratio     1.41 1.54 1.68 1.816 1.95 2.086 2.2216 2.3572 2.4928 2.6284 2.764 2.8996 3.0352 3.1708 3.3064
                                   
                                   
Air Flow Formula                                  
                                   
Air flow equals: Cid X RPM X 0.5 X Ev divided by 1728                          
                                     
                                     
For 6500 redline and Ev = 0.80:                              
                                     
Air flow equals: 244.09.07 X 6500 X 0.5 X 0.80 = 367.26cfm divided by 1728                      
                                     
1lb/min = 14.472 cfm                                
                                     
so 367.26cfm = 25.37 lbs/min                                
                                   
Air flow at boost @ 6500rpm: