Roger A. Ellis

The previous milage just before installation
of UrS4's ported MAF plus Stage 2 Hose
Kit = 14.6 MPG.
The 962 miles since installation of the MAF
= 17.1 MPG. A 17% increase!
I had previously installed UrS4's CAI & VS.
Before all that, I had installed TDL's
bored TB.

Brdman*

what about performance?

Roger A. Ellis

Performance up dramatically. I would guess another 25HP...

quattro.pilot

holy smokes! not often that mods + increased HP = better mileage! lucky you =)

Xel

WOW to the wheels probably too eh:-)

VAP

I havent talked to anyone yet who's gas mileage suffered with any of my modifications. My mileage has increased 14%.

The paradox is it does provide better efficiency and gas mileage when driving conservatively but will provide worse gas mileage when summoning all those new-found ponies than it did before.

Rule of thumb:
Better mileage than before when not pushing it, worse mileage than before when pushing it. The reults are driver-determined rather than mod-determined.

VAP

no way for the butt to perceive crank HP outputs without benefit of wheels to transfer that input to the ground and subsequently the driver. Any/all perceived or felt numbers will be wheel output rather than crank output. Crank can't transfer tactile information to a driver. Only audible output in the car and audio-visual outputs if on an engine dyno, neither of which can measure HP/torque since we can't see, hear or smell HP/torque. That leaves "feel" as the best we can do without benefit of a purpose-built machine.

Doesn't make our perceptions right, close or even very accurate. But it does make them "at the wheels."

quattro.pilot

ahhh, cool. Fair enough, makes sense =)

Xel

that's what I thought, tnx ;-)

Roger A. Ellis

After I installed the bored TB, my milage went from 14 down to 13.