Originally Posted by
Epstein
on a maf sensor car, It won't matter what turbo is on it if it's tuned right. ... as far as cruising goes. We have customers that run turbo KA tunes on NA cars with no problems and perfectly fine mpg.
Running an Enthalpy 600cc Z32 MAF tune on my S14, which is N/A (but not for long), and it runs fine with 28-30mpg on the highway.