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Edge Evolution and SES light

866 Views 7 Replies 6 Participants Last post by  ASEMechanic, 
T
Ok ever since I put the edge evolution in my EX the SES light has come on and shown P0475 which is Exhaust back pressure switch yada yada. I have tried three different switches on known good working trucks to no avail...I have also removed the switch AND the tube and cleaned both out to no avail. If I take the program out and return to stock then no SES what gives???? any suggestions?

TIA
Tom
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W
You're probably pushing too much boost. Get a blow off valve.

Alin
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