Just put my 3.73's in. Very enjoyable! Car seems a little sluggish of the start. Smells a little rich also. With in the last year I have put a new O2 sensor in, new tps which is set at .85, EGR sensor, IAC valve, complete tune up with K & N filter, removed air silencer, cleaned and tested the MAF. Timing at 14. Is it because it is an aod or am I missing something? I just feel I should be put in the seat a little more.