- May 9, 2005
- 29
- 0
- 6
So i finally decided to order 3.73 gears. I found the kit on american muscle with the gear oil and speed cal. So i had the shop quote me for 350 bucks and thats installation of the speed cal also. However, he said that i should probably get a tune done too. Now i was going to wait till i got my full exhaust and intake finished before i even thought about getting a tune. Would i really need a tune after the gear installation.... and for what actually? Thanks!

