This is topic FMU calibration question... in forum Tech Talk at Northern California Ford Owners  .


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Posted by ShowRoomStang (Member # 1713) on :
 
i have an A trim vortec and i have the 19#lb injector fmu calibration but i have 24#lb injectors... is it really necissary to get the right callibration? cuz i blow a fair amount of black smoke right now and is this making me slower by having the wrong calibration? also i have stock heads and REALLY want new ones but dont know what to buy... i have an E cam, Eddlebrock rpm upper and performer lower, #24 injectors, 5psi charger, and about every bolt-on...what heads would be best 4 me???
 

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Posted by st5150 (Member # 51) on :
 
Yes, your FMU is spiking up the fuel pressure too much and causing you to run rich under boost. This is costing you HP. You shouldn't have a problem finding a 19 lbs FMU, many people have them lying around after they've upgraded. Some TFS Twisted Wedge heads and a power pipe will really wake your 5.O up!
 

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