cam sensor would throw p0344/p0340 code. 0344 is cam/crank sensor relation, 0340 is cam sensor performance. if either of these happen, car will go into limp mode, you wont be able to rev above 2500rpm or the engine will start to miss. this is a fairly common problem with aftermarket intakes i guess, because they hit the cam sensor. on the bright side, the cam sensor is real easy to change. 40 bux for a lifetime replacement part at autozone, 2 10mm bolts, and a 3 wire connector is it. very accessible. i did mine in the autozone parking lot.
symptoms of a stuck injector would be flooding, gas smell from exhaust. best way to tell would be to pull the fuel rail, leave the injectors installed in it, leave the fuel line connected to it, and turn the key to the acc position. the fuel pump will then prime the line for about 5 seconds. if during this time any fuel shoots out, your injector is stuck open.
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