As the bore size increases twin plug may help more.
The small bore size of the 2.7 may be why twin plug has less benefit?
Also under boost flame front speed increases, densely packed air/fuel will propagate flame front much quicker.
A bore size > 100mm will likely benefit from twin plugs.
Quote:
Originally Posted by mikedsilva
Interesting on the single plug vs twin. Most folks seem to insist twin plug is mandatory but I'm also considering staying single plug when I rebuild my 3.0 to 3.5 turbo..
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