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Wow... it's been spoken about... these are pure Bull$hit... Wisen up... if the price is too good to be true, the item is too good to be true.
 

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Originally posted by phungy@Nov 15 2005, 05:47 PM
unfortunately i was one of those dummies...dont buy it!
Glad you learned you lesson. All these things are are variable resistors playing on either your MAP sensor values or your upstream O2 sensor readings. They promise to advance timing and get some more fuel in there but they either do nothing or cause the ECU to freak.
 
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