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Hi All,
Can anyone tell me what could be the problem with this greddy Profec unit.
There's a red light flashing on the boost gauge and the read out on the unit shows a negative boost?.

The car is running perfectly checked all the lines/wires to and from components, all O.K. Can anyone thro any light on this, has anyone had a similar problem?
Thanks.
 

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im just guessing

have you reset the peak hold?

normally the red means its hitting the "limit" youve set on the profec

i assume this is a second hand unit youve re plugged into your car?
 
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