Yes it will run leaner, but if you still have the O2 sensor hooked up, a 12 min tune will help. Removing the secondaries was one of the first mods done by early Rocket owners and the only way to overcome that restriction prior to Tuneboy. It's not going to lean it out enough to cause any damage.
 
Thanks for the input, this is a great site, I think for now I'm gonna install the TORS and have the dealer load triumph's tune, and then go from there in the next couple of months.
 
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