You mean 5th gear's ignition table in all gears? I'm sure there's no objective reason to f**k with the timing. Why don't you try the stock 20355 map with O2 sensor checked and 100% secondaries everywhere? if the 2013 Roadsters are getting 163 ft. lbs. at the crank with that tune, there's no reason you shouldn't get the same with the same map.