Lost power after mods

[boosh]

The hpd maf housing and air box lid have probably dropped your maf voltage, giving you less fuel.
You can put the old housing and air box lid on and check the maf voltage at different revs, and compare with the voltage you get now.

Yeh I've found out the housing is bad without being chipped. I'll probably put the old one back in until I can finish the job properly...