Probably 1 wire that intercepts the IAT sensor and runs it through a resistor back to the ecu.
1 wire for 12v+ (for the light)
1 wire for ground. (for the light)
And a fancy box with a toggle switch and light.
my friend apparently got a ''chip'' that adds 30+ hp for his m35 and he paid $300 , i tell him all the time its b.s and yet he still thinks it added 30+hp im going to get the link where he purchased this ''chip''
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