Hey guys so I drive a stock 2 door 2013 wrangler sport 5 speed auto with 3:73 gears. I plan on running a 2" mopar lift with 33" inch tires, do I need to regear?

 

Absolutely not.

 

Nope, I added 34" Maxxis Bighorn and noticed a little difference more breaking and hills than anything else. Bought a Superchips traildash and the 87 octane tune returned the little bit of pep I lost. You may notice a slighy difference if the tires are wider and heavier than stock but not enough to warrant the cost of gears.

 

No problems for you, I run 35's on 3.73's with 2.5 and a trail dash, 0-80 like stock

2013 JKUR, 2.5 teraflex, 17x9 V-Tech, Banks cold air, Gibson cat back, 315/70/17 duratrac, RR mod bumper, RR 8500 lbs

 

nope unless you do a lot of off-roading.

 

You're Summit consumption must be to high, or you're high, or both.LOL
You are nowhere near stock and 4.56 with 35's is the equivalent to stock ratio/power/performance. I know first hand. On the other hand, OP should be fine

 

I run 33" Nitto TrailGrapplers on stock 3.21 gearing in a 2012 Sahara. Initially I felt like it was down in power, and it probably was, mainly from the much heavier tires, rather than size.
Your 3.73 gears should be more than fine. With the 3.6, and 33s, if you go over 4.10, you probably be overgeared.

 

I run 295 70 17's on mine with 3.73's, auto trans. No problem and occasionally I'll pull my 20 ft skiff with it too.