Yes they are finicky. And their fuel curves are unlike anything else.
On the batch fire EZ stuff if you throw enough fuel at it they'll run ok however you're leaving a bunch on the table.
I've done over a half dozen and they're not easy but with the right system you can make them run real well in just a few hours.
The main problem is most systems lack the appropriate transient fueling tables so you have to run them fatter than you normally would. With the difference in uncovered area at different throttle positions it takes multiple tables to get it right. Most systems don't have that, even the XFI 2.0.
When you have the right equipment they work fine. I even nailed the tuning on a couple via email.
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Mark
Engine builder and tuner.
Last edited by supremeefi; 08-30-2013 at 12:32 PM.
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