MPG increase with performance boxes?

[Runaway]

Just curious if anyone has noticed an increase in mileage when you added any of the performacnce boxes.
With the Cummins, I always saw a 1 - 1.5 increase when driven moderately.

Thanks for any input.

[ 12-07-2002: Message edited by: Runaway ]</p>

[matt-max]

i've found the edge juice box to be worth about 1 mpg if i can keep my foot out of it.

[SoCalDMAX]

Depending on your right foot and the terrain, I could see possible mpg gains from a power mod. If towing or in hilly terrain or both, more power is gonna keep you in the higher gear and allow lower RPM, thus better mileage.

But that can all go out the window with a heavy right foot...

Regards, Steve

[JEBar]

above post are correct ... about 1 mpg + on trips, can't tell any round town ... Jim

[Oongawah]

Last tank @28K and compensating 4% for tire size, I got 17.23 MPG driving like an idiot. I've never been able to drive proper, so I don't know what she's capable of(hehe). Mods are listed-Have FUN!

[Oongawah]

Oh yeah, L4 Juice unloaded.

[motovet]

I also gained 1-1.5 MPG with the added boost.

[thechevyhdman]

I think it stays relatively the same, depending on which level. I took a trip upto Boston this weekend 80mph there the whole way,(L1) 75 to 80 on the way back I squeaked out just over 16 mpg, Im not very impressed but it is winter and what the heck I was in alot of wind on the way back. I was wondering if the same trip level 4 would make a difference positive or negative, I guess I could say goodbye to getting over 500 miles on a 26 gallon tank till the spring. Unless you have a 2by 4 under your gas pedal its hard no going on some WOT runs with the Juice

[Runaway]

Thanks for responses guys