Hi,

Basically the reasoning behind squirting 1+3 and 2+4 together is that because of the firing order, youll have the fuel there pretty much int he order that it's needed, i.e. the same order that the cyclinders will fire in.

Next, you probably could get away with using diodes and running off the coil pack, but the better way is to run it in 4-Cylinder mode, running off the factory Tach signal. The way to do this is to perform the following mod's to the MS:

. Remove D5, D8, R10
. Remove jumper between XG1-XG2
. Fit wire between XG1 and right of D5 (non band)
. Fit wire between bottom of R10 and right of D9 (band)
. Fit 1k resistor in place D8 <1K>

Then you can use the stock Tach. output... ;)

And yes I could give you a MSQ file to use if I know your injector size and some more about your setup.

Oh, and yes you need to limit the MAP voltage so that the stock PCM will still be able to control the ignition. One way is to use the missing link as mentioned above.

Lee.