1jz breaking up at 2k rpm
#16
Pole Position
Thread Starter
Ok so I started to clean up the harness. Cut a few stray wires,tape up a few shaved wires. And all of a sudden I went from running Lean to Rich. Still breaking up,but it's very rich now. Will jump on the harness again today.
#18
Lexus Test Driver
iTrader: (4)
Speed density cars don't break up with boost leaks, they just don't make the right amount of boost. If it's not the map sensor it very well may be a fuel delivery issue. First thing I do to an sc is bypass the fuel ecu, even if the car is stock. Try that, then go from there. disconnect the map and see what it does.
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