OBD codes 511 and 327, car will barely start

Redsnake2

New Member
Aug 8, 2005
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Philly, PA
Ok i have a twin turbo mustang SN-95 with the 5.0.. The car was running fine and then it started to sound like it was missing. babied it and it was idleing horrable, now it wont even start. it turns over and will barely run.

I have an EGR delete on the car and i also have a SCT switch chip and it programmer for the EGR delete.. HELP this thing is racking my brain.. oh yea and i looked for vacuum leaks and found nothing obvious.

5861315301
 
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Code 511 is for the chip; the computer always throws a 511 if there is a chip in the diagnostic port. 327 means your EGR feedback signal is/was low. Since you have no EGR, that also makes sense; but I would think the EGR delete in the SCT chip would eliminate the 327. Could the SCT chip have come loose?

Does the SCT chip also provide a tune for the turbos? If it does, I would suspect the chip has gone bad or come loose.