Just fitted a jetex filter and took it out for a run.
Highest reading was 210.19 @ 6360rpm.
Which is just stage 1 at the moment.
The only reason i put the cone on was for the noise, which i love ! Sounds perfect.
So im fairly happy the maf reading was that high, as my only other previous reading was 198, but that was in 2nd gear. This time i used 3rd and 4th