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Old 09-02-2012, 01:21 PM   #5
Scooby Newbie
Member#: 288093
Join Date: Jul 2011
2002 Bugeye
PSM and parking lot scars


What is the MAP reporting with the engine off? At idle? Did the motorsports guys check you manifold harness? It carries all of the signals from the sensors to the computer. My car had a "map sensor high circuit" CEL and would cut fuel and timing every time I hit wastegate spring pressure, after my first turbo swap. I spent weeks ordering sensors, cleaning grounds and checking for boost/vacuum leaks. Eventually, I got ahold of a use engine harness from another member. After I installed it, the problem disappeared.
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