2004 Yaris 1.3 MAF reading.

[Stu04]

Hi All.

I have a 2004 Yaris 1.3,  which was running poorly when I bought it. 30mpg, lumpy engine, silly fuel trims, a host of DTCs. The previous owner was fleeced by a mechanic. I've fixed the issues (new platinum spark plugs, fitted the air filter box correctly, injectorcleaner plus new cat and O2 sensors that actually had heaters! Now it's 47mpg, long term trim at -0.1 %. The MAF is showing 1.7g. I'd expect 1.3g for a 1.3litre engine, or is 1.7g correct?

Thank you!