Air box mods

[mudski]

Stock intake is only 63mm I think so if thats right an OE MAF housing might be say 55mm the HPD is now equal to
the OE piping at 63mm, [for comparison only]so the HPD is equal to the OE piping, there abouts
That being the case if I fit a MAF housing in a 63mm or 76mm pipe for that matter then I've acheived the same thing.
I propose putting the MAF about where the OE one is.
I think when volts reach 4 volts on the MAF you'll hit limp mode

Surely this HPD MAF housing on its own cant do much
its only 50mm long and you're using the existing plumbing
you either need to up grade the OE piping or go bigger again like I want to.
To Mark and MH can you say your Patrol goes faster/better because of this mod.

Dr Gary had issues and he went out and bought the HPD maf housing and he's loving it now. It's proven this housing does what it's designed too. As for your question John. If you just put this housing in and do nothing, you won't see jack chit in performance. It's only when you start to raise the boost you will find you won't see limp mode. This is what this housing is designed for. Don't get it confused with bolt on performance, where you install it and then go wow. It's only designed to eradicate limp mode issues.