Running a FAST standalone vs piggybacking stock computer
08-09-2009, 09:38 PM
#1
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Running a FAST standalone vs piggybacking stock computer How many people here have gotten rid of the stock pcm/ecm completely and replaced it totally with a FAST computer? and how many have used it to piggyback with the stock computer?
What are the pro's and con's of each?
what will and wont function if i ditch the factory computer all together.
im not worried about a/c, air pump, emissions, foglights, horns, airbag sensors.
I am only concerned with what i need to keep to make the car run and drive Will the factory guages not work with just the FAST?
I had planed on ditching the stock computer all together and only running the original FAST with msd digital 6, hvc II coil, conventional rear mounted dist., and a msd crank trigger setup.
Im all ears to any and everything i need to know on the subject of standalone vs piggybacking the FAST.
LT1 car btw
What are the pro's and con's of each?
what will and wont function if i ditch the factory computer all together.
im not worried about a/c, air pump, emissions, foglights, horns, airbag sensors.
I am only concerned with what i need to keep to make the car run and drive Will the factory guages not work with just the FAST?
I had planed on ditching the stock computer all together and only running the original FAST with msd digital 6, hvc II coil, conventional rear mounted dist., and a msd crank trigger setup.
Im all ears to any and everything i need to know on the subject of standalone vs piggybacking the FAST.
LT1 car btw
08-10-2009, 10:58 AM
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The only reason I kept the stock PCM (which is NOT piggybacked to my XFI) is to keep the speedo. I have a factory gauge cluster. Your temp guage, fuel pressure, voltage, oil pressure....ect runs straight off the sending units so the stock PCM does not control that. You will have to run the wires for those minus the fuel which is already done. I just ran them through my XFI harness loom. All the stock PCM does for me is run the speedometer.
Hope that helps.
Hope that helps.
Im gonna go standalone and figure out something for the speedo
