i think we need to figure out if the VP44 even reports the timing to the ECM. i have read that the FPCM (fuel pump control module, ie vp44's computer) has final say in fueling and timing. if it does report it to the ecm, then it would be possible to monitor it.if i am right, anything on the CCD bus has "access" to everything on the bus. each module only looks at a small spectrum of the bus. like a television. you may be able to pick up several station, but you can only watch one channel(the one you are TUNED into) i believe that all info could be accessed if you have a device that can "tune" in to the proper frequency. i have had limited success using the ELM327 as it gets its info from the ECM/obd.