Quote:
Originally Posted by RobertISaar
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.
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Right, technically it's possible, but I think you'd be hard pressed to find an MAF count greater than 2 (I've only seen this on V8/V10 and above) and an O2 sensor count greater than...2? I'm not sure about V8s, my 1ZZ has 1 O2 sensor per bank. I don't know how many O2 sensors are fitted to his engine.
At any rate, there's the issue of the opposite cylinder bank "stealing" quite a bit of charge from the 3 with the added backpressure.