E85 conversion + fuel tank removal

Fuel tank removal is probably the most PITA job on an MR2. Its doable, but be prepared to swear a lot! The lines running to the tank are deep in the engine bay with barely any room to move. I remember diving head first into the engine bay, legs in the air hanging over the side while trying to undo fittings with 1 hand. Your back burns from holding that position for more than a few minutes, and it seems like your back gives out just before you finally get a hold of that line. Once those are done, the drop is easy.
 
You'll need to remove a lot of things for room. Engine lid, engine side panels, airbox, hot/cold pipe, x brace etc... If you can, take off the dump pipe and turbo - you'll have way more room to work with and it wont be as frustrating. Or better yet, drop the engine and replace a few things while you're at it. And make sure the car is very secure before working on it - you'll be climbing on top and underneath a lot. I used jack stands + 2 wheels stacked on each other on each side incase a stand slipped.

It's not that bad, even easier with a hoist.
 
My tip is to undo the electric wires for the fuel pump under the ash tray first, before you get dirty/forget

While it is out also check the heater pipes that are above the tank, as they are known to crack.

Not all of the tanks have the drain plug.

Ok, thanks for giving some stuff to be aware of and check when it gets tackled... not looking forward to it but at the same time I need to do it so might just throw a whole day at it and get it done...
 
As for the fuel tank itself.. am I correct in thinking these are foam filled fuel tanks?
Is there any special cleaning for these?
 
Also on further troubleshooting only the walbro has seemingly stopped working, as when power is put directly to it theres no noise, the in tank pump still pumps though. I'm just glad it happened while idling instead of on boost.

Ah ok, I knew I never had issues with hard cornering and though it was foam... but it's probably just good design.