Attention: TDR Forum Junkies 
I've been to two separate dealers trying to get my VP44 checked out. The first dealer did the replacement/relocation of the lp to the tank. However, he told me that I had too much boost and therefore couldn't make a determination on the vp, even though he acknowledged hearing the surging...
Took it to another, more experienced dealer Friday, only to have him tell me the same thing, too much boost, didn't have anything to compare it too, no diagnosis... yet he also acknowledged the surging.
Tried resetting the APPS yesterday... before I started, checked the voltage at the PCM (orange wire/blue tracer) and it showed . 12V... so I pulled the APPS off, but couldn't figure out how to adjust it and keep it set at the . 463V as shown on the tag... put it back together, showed . 08V! checked the DTC's in the odometer, and it threw a P0122, APPS voltage too low, as well as lighting the check engine light... . and interestingly enough, there was very little surging on my way back home last night (2 hours highway) which really has me thinking that all my problems are tracing back to the APPS...
This morning, check engine light was off, but still shows a P0122... . and much to my chagrin I found out that there are two cycles on the odometer when doing the DTC display, one for the PCU and another for the ECU... I felt really stupid when I saw the ECU sequence showing 4 codes! P0122, P1693, P0216, and P0234...
That last one is engine overboost, which can only be caused by the Banks Quick Turbo and has to be why the dealer couldn't get the problem diagnosed... he told me that since the pressure was too high, he didn't have anything to compare it to and that I needed to reinstall the factory turbo housing and intake to get the right readings... . anybody had that problem with Banks stuff???? I emailed them this morning, still no reply.
Took it to another, more experienced dealer Friday, only to have him tell me the same thing, too much boost, didn't have anything to compare it too, no diagnosis... yet he also acknowledged the surging.
Tried resetting the APPS yesterday... before I started, checked the voltage at the PCM (orange wire/blue tracer) and it showed . 12V... so I pulled the APPS off, but couldn't figure out how to adjust it and keep it set at the . 463V as shown on the tag... put it back together, showed . 08V! checked the DTC's in the odometer, and it threw a P0122, APPS voltage too low, as well as lighting the check engine light... . and interestingly enough, there was very little surging on my way back home last night (2 hours highway) which really has me thinking that all my problems are tracing back to the APPS...
This morning, check engine light was off, but still shows a P0122... . and much to my chagrin I found out that there are two cycles on the odometer when doing the DTC display, one for the PCU and another for the ECU... I felt really stupid when I saw the ECU sequence showing 4 codes! P0122, P1693, P0216, and P0234...
That last one is engine overboost, which can only be caused by the Banks Quick Turbo and has to be why the dealer couldn't get the problem diagnosed... he told me that since the pressure was too high, he didn't have anything to compare it to and that I needed to reinstall the factory turbo housing and intake to get the right readings... . anybody had that problem with Banks stuff???? I emailed them this morning, still no reply.
