n62 maf overkill?

[SidewayZ-s14]

Just a quick question. I'm pretty much running a stock SR with a few bolt ons.

s14 SR
FMIC
Walbro fuel pump
HKS actuator @ 14psi

I'm getting HORRIBLE gas milage and i feel if i get my car tuned to what i have and 91 octane i'll hopefully get better gas milage.

Well my question is, will the n62 MAF be OVERKILL for this setup? Will i see any differences? Is it worth it?

Thanks.