Quote:
Originally Posted by serialk11r
You're missing the point. When there's uneven scavenging and backpressure, the injectors can't inject more fuel into some cylinders and less into others. Thus you will have the wrong amount of fuel in ALL the cylinders.
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to split hairs: you can.....
but only if your PCM is capable of doing so. starting in ~1994 or so, certain GM PCMs started supporting "individual cylinder trims" that allows you to skew the delivered fuel to each cylinder. certain V8s suffered from one cylinder basically "stealing" the air charge from another cylinder, causing it to have noticably more air in that cylinder compared to another cylinder. so without it, a couple cylinders would always run rich and a couple would always run lean.
i don't think any of the V6 engines had that issue, but the capability still existed IIRC.
but, this is ford we're talking about, so i have no idea if any of it applies, or if it's even possible for a tuner to access it.