LT1 w/FAST XFI issue
 

Just curious if anyone has any advice on an issue I've recently encountered. My bracket car is an LT1 with FAST XFI and an MSD Opti. My data logs shoe that I have error code2-128, it doesn't come on until 5300-5600 rpm. I have been trying to track down the issue for a week or so with no success. Has anyone else encountered this or have any advice?

Re: LT1 w/FAST XFI issue
 

Error Codes:

Error Code 1:

********* 1: CTS Fault*
********* 2: ATS Fault
********* 4: MAP Fault
********* 8: TPS Fault
********16: Wideband Fault
********32: Ign. Voltage Fault
********64: Overboost Fault
*******128: IAC Fault

Error Code 2:

********* 1: CTS Bias Error
********* 2: ATS Bias Error
********* 4: Fuel Composition Sensor Fault
********* 8: Injector Duty Cycle Fault
********16: Fuel Pressure Sensor Fault (AAUX1)
********32: Oil Pressure Sensor Fault (AAUX2)
********64: Cam Sync Position Error
*******128: Crank Sync Position Error

Crank Sync Position Error
Crank Sync occurred at an unexpected angle
-or-
Crank Sync failed to occur when expected


*Check to make sure your balancer (balancer bolt) is tight.