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Discussion Starter #1
Does anyone know what is causing my problem iv researched with no luck. The car has been doing this since I got it , no check engine light , I can hook the car to my laptop and datalog and the car works great no limp mode . Untill I unhook the laptop and shut the car off ,start it right back up and limp mode until I datalog . Again no engine light but one time for a second on kmanager I seen "daughterboard malfunction or communication" and never seen it again . Any input is appreciated
 

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Discussion Starter #3
Checked that all fuses were good. Have a brand new battery cleaned all the grounds in the bay and still does it . I noticed my a/f gauge dosent work 3/4 of the time could that be groundi g out causing my effects , just a thought .
 
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