ecu firing order change

64fordf100292 · #1 (**permalink**) 11-12-2007, 06:33 PM

hey guys. I have a 1964 ford f100 with a 292 that i am gonna put a 5.0 fuel injection system on, but i have a few questions. the intake will be custom made.
1. what are all the options to change the firing order in the ecu.i know about the tweecer but what else can be used??? can a chip be burned with the changed firing order. i
2.the distributor acts like a cam position sensor right?????
3. what sytem should be used. speed density or mass-air. keep in mind, this motor will eventually recieve a custom blower setup so the fuel injection needs to work with the blower when i add. it
4. was the 5.0 used with the new obd II system????? from what i am led to believe, the 5.0 was phased out in like 96. is this correct?????
thanx guys.

64fordf100292 · #2 (**permalink**) 11-16-2007, 10:08 AM

nobody have any input?????

Mark Kovalsky · #3 (**permalink**) 11-16-2007, 10:26 AM

There's no need to change the firing order in the PCM. Just run the wires to the injectors and plugs in the proper order and it will work fine.
All 5.0L engines were OBDI. There was never an OBDII 5.0L.

64fordf100292 · #4 (**permalink**) 11-16-2007, 07:59 PM

so in other words. change the firing order of the injectors not the ignition firing order???? never thought about that. the 5.0 efi is sequential or batch????

51dueller · #5 (**permalink**) 11-16-2007, 09:37 PM

There are some things to clarify:

All car 5.0's are SEFI
All truck SD 5.0's are batch fired
1996-2001 Explorer 5.0L are OBDII

Don't mess with the injector wiring as that will interfere with the O2 sensors. It messes with the fuel balance. The computer will try and correct the fuel mixture of that cylinder but it won't know it's on the other side of the engine.

A stock computer won't be able to handle a different engine and a blower without tuning. You have to reset the engine size, fuel injector size and many other settings. Just get Tweecer and be make the necessary changes.

64fordf100292 · #6 (**permalink**) 11-17-2007, 07:56 AM

ah ok. tweecer huh. thanx. can my changes be done by a chip????

51dueller · #7 (**permalink**) 11-17-2007, 05:02 PM

It most likely can but many engine setups require several tuning setups so the chip would have to be changed each time. With Tweecer you just need a laptop and you can get a full real time display of every sensor.

64fordf100292 · #8 (**permalink**) 11-17-2007, 11:10 PM

now,from my understanding, the tweecer doesnt replace the factory ecu just a addition to it??????