your lpg system doesn't have a filter before the regulator?
or doesn't the filter get those bits? ever tried getting lpg from someplace that fuels forklifts?

I've heard of those mixes that aren't 100% propane, those could be bad for a turbo vehicle or ant other time you get knocking.

there are some countries where they practically give LPG away like britain. I just paid 2.15 /gallon petrol is 2.19 and I really should have paid less, but needed gas. prices range from 1.69 - 3.50 depending on where you get it.

I really want a turbo, then maybe switch to hydrogen or some really weird fuels.

RE the manifold, I sent that out to be made, cost $150, but it's an intermediate step, meant to be quick and dirty, as the final goal is turbo power, i didn't want to waste alot of money on a non turbo manifold. If i did it over the throttle body adaptor would mount the TB horizontally.