Join Date: Jan 2014
Location: South Central PA
I would run a leakage test, see what kind of shape the top end is in. Use a bore scope to read the piston tops.
Those early 103 ran hot, 11's were really bad. So the rings tend to go away early and the bores are seldom round at tear down.
If it still has a cat on it, it could be stopped up, they don't do well when the rings pass oil. A vacuum gauge will tell the tail on that. If the vacuum falls off with the power, suspect a clogged cat.
Other than that, I would suspect something in the tune, or one of the sensors. Data stored in memory can get buggy. And sensors wear out. You can sit down and test the sensors with a breakout devise, like a twin scan, and with some tuners you can record and read the data to see what was going on when it was acting pissy.
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