2G Firing order

[GSX_beast]

I have a 2g with a 1g head and intake manifold with a 1g coil pack, the ecu is from a 97. I'm running a 1g cas also. What should my firing order be?

 

[AllanL]

still 1-3-4-2.

1 and 4 go into 1 coil set;
2 and 3 go into another...

 

[91-GS]

Cylinder 1 is closest to timing belt, cylinder 4 is furthest. Just FYI.

 

[GSX_beast]

If I do 1342 on my coil pack then 1 and 3 would be going to the same coil set and 4 and 2 into another.

 

[synthetek]

It should be the same as stock since you have a 97 ecu and the 1g cas is on the same side as the 97 cas so nothing is inverted.

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[AllanL]

If I do 1342 on my coil pack then 1 and 3 would be going to the same coil set and 4 and 2 into another.

no...

Justin could not have been more correct...

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[Jerzm3]

Stock is 4-1-2-3, 6 bolt CAS in a 2G will be 2-3-4-1. That is left to right on the coil pack.

 

[steve]

Firing order remains the same for all versions of the 4G63, 1-3-4-2. It's set by design and locked in steel.

The order of the wire on the coils isn't the firing order, and depends on the CAS design and location, ECU software, coil pack wiring, etc.

Since the DSM uses a wasted spark, the cylinders are paired 1 and 4, 2 and 3. Switching which wire is on which tower of one coil just changes the polarity of the spark but not when it fires. So you can swap the wires for 1 and 4 or 2 and 3 without making a difference but not mix them or switch which coil.

 

[synthetek]

6 bolt CAS in a 2G will be 2-3-4-1

It would only matter if you were putting the 1g CAS in a car with a 95-96 ECU , 95-96 have the CAS on the opposite side. The OP has a 97 ECU , The CAS on a 97 is on the passenger side same as the 1G CAS so no changes need to be made.