Originally Posted by tombrochard
shortie headers made a nice improvement on my V6 but the gears where an awesome difference! I went from 2:73 to 3:55 and the takeoff is totally awesome now. Not quite as thrilled on the highway thought, I went from 29 MPG to 26 MPG. and that's driving around 65 MPH instead of 80 MPH. So I'm going to slow it down a bit on the highway due to MPG and exhaust noise. If I was to do it again I might try to 3:31 gears because they seem like a better compromise given all the highway driving I do. What gears are in yours?
Just did a road trip and got 26.99 one way and 25.2 the return trip. Difference was more A/C used return.
3.55 gears and 73mm throttle body and using a 91 performance tune (road trip so didn't want to restrict myself to finding 93 fuel.
This was calculating myself cause the gauges said 25.5 and 24.2 so apparently it doesn't calculate as well.
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