Quote:
Originally Posted by Frank Lee
I wouldn't do it because merely killing injectors is pointless, but some are arguing that the only reason killing injectors doesn't work is because of the effect on the O2 sensors. If that was the only hang-up then a dual exhaust could certainly be provided.
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Good point. For 4 bangers, it wouldn't be that big a deal to set up the exhaust plumbing as you've described, now that I think about it.
I had V-engines in mind, though. However, some V-engines could certainly be configured such that an entire bank could be shut off for cylinder deactivation. Certainly, the V6 engine in my Magnum could be fitted, as it has a firing pattern of 1-2-3-4-5-6. Shut off the right bank, for instance, and the firing pattern would become 1-x-3-x-5-x, and I'd end up with a fairly evenly running I3. There is no need to change the exhaust plumbing, and the O2 sensors in the shut-off bank could simply be ignored.
Now, most production V8 engines, on the other hand... The V8 in my Dakota has a firing pattern of 1-8-4-3-6-5-7-2. Shut off the right bank, and I'd end up with 1-x-x-3-x-5-7-x. That's not terribly well balanced.