Fox351

I just have a question about the Fast XFI system....If I get a Fast system and I get the main harness, fuel injector harness, and the ignition adapter harness do I need a main Engine Harness and a ECU or will the Fast System take care of all that for me??? If this matters...I have an 88 Mustang Notchback that I swapped in a 95 Ford F-150 351 Windsor engine....Thanks for reading.

AdderMk2

why not use the Megasquirt EMS... it costs a fraction of what the FAST does, and it will connect to the stock harness

Fox351

So the Megsquirt EMS product is used with the stock harness and it takes place of the ECU...I was wondering but I will have to get a Main Wiring harness from somewhere...The one on the motor is from the truck and I don't know if it is Mass Air or Speed Density...I am completely unsure of the Harnesses and ECM...The Fast system just seemed like the easiest.

AdderMk2

megasquirt uses speed density and does not require any additional wiring... trust me.. go MS.. you will be ALOT happier

Fox351

If I wanted to switch over to a MAF sensor could I do that with a Megasquirt System or would I have to make a Speed Density System work...and will that wiring harness from the truck plug into the MS system or will I have to get a special connector???

luckythirteen13

i wouldnt even spend the money for an xfi unless your making 1500hp plus. there are many cheaper ems that will work just fine.

94StinkinLincoln

other systems are Tweecer R/T and Anderson PMS