A QEV would increase your cycle rate significantly. As far as tweaking, Virtue will make that much easier. What are your settings now? I would figure stock, I just don't know what they are for the Ion.
You should also take the cold weather into account. Colder weather requires a higher dwell for ideal performance. This is even more evident with spool vavles .
Some Invaluable Words of Wisdom:
A wise man's heart directs him toward the right, but the foolish man's heart directs him toward the left.
“If you're not a liberal at twenty you have no heart; if you're not a conservative at forty you have no brain.”
-Sir Winston Churchill
"Lousy Democrats."-Homer J. Simpson