Chances are the injectors aren't spraying very well. Fuel pressure should be 8-13, but 12-13 is better(unfortunately most TBI pumps are lucky to be able to hold 8-9). They're really a basic engine set-up without many BS sensors on it. The tPS can cause all kinds of havoc with them idling, but also be sure all your grounds are good and clean as they tend to go bad and burn up the ECM's in them.
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR
2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD 
AND THE PINK JEEP!!!! R.I.P.
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