I've been running the Borla UEL untuned with no other exhaust mods for a couple months and am mildly impressed. The sound changed slighty toward what I was hoping for but not enough and power wise only a slight increase in the old butt dyno. Would I have done it differently? Maybe if you had asked me 2 weeks ago before the Abu Dhabi police started cracking down on "modified" vehicles. Otherwise, looking forward to having the money for a tune after the holidays
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