VXII engine struggles after change over

[Logz10]

Pulling my hair out here guys.
My VXII threw a rod through the block so I sourced the drive train from a VY wreck with perfect running gear (120,000km. heard running before being removed, high compression on all 6 cylinders, tight clean auto). Both the engine and tranny were swapped in to my VXII.
Car starts perfectly with minimal noise and idles fine but as soon as I throttle engine it nearly stalls. I can hear engine take a big gasp of air then nothing seems to happen. If I'm lucky engine will recover and idle again, other wise it stalls.
I have given car complete service (oils, filters, injectors, leads, plugs cleaned or replaced) before installing engine/tranny but can't work it out.
I even checked the hoses and wiring with a mates VY and can't work out where I've gone wrong.
Any ideas?

[FstStig]

Make sure you have connected the Vacuum lines up to the right spots. One Vacuum line in the wrong spot can make a Difference.

[blownba]

Sounds like you have the mass air flow sensor unplugged???
Or there is a massive vacuum leak in the intake pipe to MAF???

[Logz10]

Thats what I thought. Thats why I checked with a mates VY.

Worked it out. bend pin on the MAF sensor. Feel like such an idiot. Gotta be careful.
Thanks for the quick reply guys