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Old 08-30-2014, 12:01 PM   #1
Zitro
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Default PLEASE HELP, boost issue after ecu reset

Hey guys, I'm on a road trip to California and on the highway on a slight incline and I hit the fuel cutoff, check engine light, and P0244 code (overboost). I cleared the code/reset ecu with my accessport and kept driving. Car feels ok, but won't hit target boost. I'm protuned for 18 psi, and it won't go above 15. Did I do something wrong? I've already driven over 300 miles since the reset, and it still won't hit boost. Am I supposed to reflash the 18 psi map, or did resetting the ecu to clear the code screw something up?

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Old 08-30-2014, 02:19 PM   #2
dstroy
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Maybe your tuner set your DAM to a value lower than 1 to start. Maybe you have a boost leak. Maybe you are experiencing enough knock events for your ECU to not raise DAM back to 1. You should probably quit trying to hit target boost yo. At least until you figure out what it might be.
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Old 08-30-2014, 04:19 PM   #3
Zitro
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I'm just nervous because I'm in San Fran and have to drive all the way back to Seattle.....played around with the AP and found out my wastegate cycle is always at 0, even when psi is at the max it's allowing me (got a 16.8 once, after I posted this, but now won't go over 16). Anything I can check for?

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Old 08-31-2014, 06:59 AM   #4
jeffk182
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I would wait to do anything until you get to your destination. Check vacuum lines from the wastegate to the boost control solenoid and other hoses. Could be something simple, could be a dead solenoid.

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Old 08-31-2014, 11:45 AM   #5
Patrick92
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I had the same problem once. I took off the battery and let it sit for a night. Then I flashed back to the stock map for a day and drove it like a grandma. Next day flashed it back to my tune and it ran like normal.
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Old 08-31-2014, 01:02 PM   #6
Jubathoph
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What are you doing for boost control? Do you have an MBC or EBCS? The stock boost control can allow boost spikes...which may have popped off an intake hose somewhere allowing a boost leak. Or there could actually be a mechanical problem with your wastegate. Check for boost/vacuum leaks; is your vacuum boost pressure above -10 psi? Do you have high AF learning values? Those can be indicators of boost leaks.

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Old 09-02-2014, 10:58 PM   #7
Zitro
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Well, I reached out to my tuner and he said after I reset the ECU, it defaulted economy mode, so I need to Realtime flash my 18 psi map back on. D'oh! Good to know.
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