[dustynugs]

im new here and dont know much about it.i have some questions,i was wondering how much mpg does 4.10 gears take away when having them on the car and whats the cheapest way to make my mustang have more hp THANKS

 

[SoCal2V]

First question: Not much. I lost about 3 mpg, but most of my driving is short, local trips and I don't know how to drive conservatively. Most shifts are at 3-3500, mix of city/fwy driving (most fwy at around 80 mph) gets me a solid 18-19 mpg. The occasional road trip (all fwy) I can usually get 22-23 mpg. Set the cruise control at 70 and you can see 25 mpg.

Second question: I don't know how much power or how cheap you want it, so I'm just going to say nitrous. Prices vary, but you can get a brand new wet kit for about $600. Considerably less $$ if you buy somebody's used crap. And although there are those who seem to get away without doing so (I've met them), a custom dyno tune is recommended to go along with this, so figure like another $2-300 for that.