My 3.73's felt a major first gear difference until I put the Mac Prochamber on and lost low end TQ. But now that I have the SCT X-cal 2 dyno tune, the car feels like that's back.
I can jump cars hard on the freeway with no delay which is great. Very little lag off the line from stoplights where I felt like I had a turbo waiting to be spooled with 3.27s with the 2vs powerband.
the only time I would feel a difference with my 4.10 gears in my auto 98GT was when I would take off the line past people. I would notice it was easier to gain ground. But thats about it...it was only a visual difference. The car def never felt faster to me...