My question comes from my setup and whether or not it is worth to change. I currently have 4.10 gears in my '99 cobra and have no mufflers on the vehicle. This sounds amazing 
but I have to say that I believe I am loosing some torque 
. I also feel a small thump most of the time when I put the transmission into gear and when I let off the clutch. Now I have replaced the transmission about 5 months ago and am pretty sure it is not the U-joints so I believe the issue is with the rear end and something being loose but I don't know them that well.
Question one is if the rear end is loose would it be from the gears being worn so buying a new set of 4.10's would fix it? or would it be in the rear end and I have to rebuild it? How much should these costs installed/fixed?
Question two is by replacing the straight pipes with mufflers, say just 40 series Flowmasters, will I greatly feel an increase in torque? Has anyone else tried this setup, having no mufflers, and decided to go with mufflers?
but I have to say that I believe I am loosing some torque . I also feel a small thump most of the time when I put the transmission into gear and when I let off the clutch. Now I have replaced the transmission about 5 months ago and am pretty sure it is not the U-joints so I believe the issue is with the rear end and something being loose but I don't know them that well. Question one is if the rear end is loose would it be from the gears being worn so buying a new set of 4.10's would fix it? or would it be in the rear end and I have to rebuild it? How much should these costs installed/fixed? Question two is by replacing the straight pipes with mufflers, say just 40 series Flowmasters, will I greatly feel an increase in torque? Has anyone else tried this setup, having no mufflers, and decided to go with mufflers?
