Truck is 2011 GMC Yukon 6.2 6 speed.
Mods done:
E38 PCM form 2013 Yukon XL - 2 SD OS, VATS patches set to disable, starter patch set to disable, diagnostics for starter relay set do disable, disabled all immo/theft codes, MAF failed, TB, fuel, spark, tables mached to old PCM, generated all VE tables.
Tramsmission - Jaguar 8HP70 swap with standlaone TCM.
Issue: truck starts and dies after second or two like VATS is still on. getting code for MAP sensor range performance and U0100 code.
Any ideas what might be wrong ?
best regards