I have a 2001 Coupe. It has a Var-a-ram with power duct. Also a B & B cat back exhaust. The above codes where first generated about 30 days ago. From prior responses to this issue I changed spark plugs and wires, cleaned MAF, changed MAF screen from stock to Halltech, installed Hypertech program. I have reset codes and disconnected battery terminal to allow the computer to re-learn and each time also performed the idle learn procedure. Shown below is the freeze frame data:

Control Module
$10 SAE J1850 VPW
Vehicle Info.
Not Supported Or Sto-red No Data.
Since DTCs Cleared
MIL Status ON
Misfire Monitor OK
Fuel System Mon OK
Comp. Component OK
Catalyst Mon INC
Htd Catalyst N/A
Evap System Mon OK
Sec Air System OK
A/C Refrig Mon N/A
Oxygen Sens Mon OK
Oxygen Sens Htr OK
EGR System N/A
Stored Codes
P0171 System Too Lean Bank 1
P0174 System Too Lean Bank 2
Pending Codes
P0171 System Too Lean Bank 1
P0174 System Too Lean Bank 2
View Freeze Frame
DTCFRZF P0171
FUELSYS1 CL
FUELSYS2 CL
LOAD_PCT(%) 2.7
ETC(¡æ) 169
SHRTFT1(%) -3.9
LONGFT1(%) 18.8
SHRTFT2(%) -3.9
LONGFT2(%) 19.5
MAP(kPa) 8.3
RPM(/min) 923
VSS(km/h) 34
MAF(g/s) 0.981
TP(%) 6.7
O2 Monitor Test
O2 Bank1 Sensor1
Rich-Lean Threshd(V)
MOD : $10
MEAS: 0.510
MIN : -----
MAX : -----
Lean-Rich Threshd(V)
MOD : $10
MEAS: 0.510
MIN : -----
MAX : -----
Low for Switch(V)
MOD : $10
MEAS: 0.300
MIN : -----
MAX : -----
High for Switch(V)
MOD : $10
MEAS: 0.600
MIN : -----
MAX : -----
Rich-Lean Switch(s)
MOD : $10
MEAS: 0.032
MIN : 0.000
MAX : 0.252
Lean-Rich Switch(s)
MOD : $10
MEAS: 0.020
MIN : 0.000
MAX : 0.092
$70 (Counts)
MOD : $10
MEAS: 116
MIN : 64
MAX : 255
$71 (Values)
MOD : $10
MEAS: 116
MIN : 34
MAX : 255
$81 (Values)
MOD : $10
MEAS: 53
MIN : 12
MAX : 255
O2 Bank1 Sensor2
Not Supported Or Sto-red No Data.
O2 Bank2 Sensor1
Rich-Lean Threshd(V)
MOD : $10
MEAS: 0.510
MIN : -----
MAX : -----
Lean-Rich Threshd(V)
MOD : $10
MEAS: 0.510
MIN : -----
MAX : -----
Low for Switch(V)
MOD : $10
MEAS: 0.300
MIN : -----
MAX : -----
High for Switch(V)
MOD : $10
MEAS: 0.600
MIN : -----
MAX : -----
Rich-Lean Switch(s)
MOD : $10
MEAS: 0.032
MIN : 0.000
MAX : 0.252
Lean-Rich Switch(s)
MOD : $10
MEAS: 0.020
MIN : 0.000
MAX : 0.092
$70 (Counts)
MOD : $10
MEAS: 116
MIN : 64
MAX : 255
$71 (Values)
MOD : $10
MEAS: 116
MIN : 34
MAX : 255
$81 (Values)
MOD : $10
MEAS: 53
MIN : 12
MAX : 255
O2 Bank2 Sensor2
Not Supported Or Sto-red No Data.
On-Board Mon. Test
Not Supported Or Sto-red No Data.

It has also been suggested that I should have an HP Tune performed, but not sure what that involves or who to contact in NW Phoenix area. Anyway if you have the same issues or have a solution or suggestion please let me know. Thank you.