those of you that use trunk mounted tank what water pump you use? i bought the tank from chiseled performance the tank is beautifull i order it with a rule 1500 pump and that pump is a complete crap the water moves tooooo slow now the iat's are worst than the tank in the front with the stock bosh pump, i will try cobra jet water pump (55 GPH) to see...
you need a rule 2000 pump if you want an in tank submerged pump. mine moves the fluid FAST. for external you need a meziere pump. forget about the lightning (FRPP) pump
My chiseled trunk tank has a rule 1100 and it moves the water just fine. I suspect you have too many tight right angles and bends reducing the flow of the coolant/water. I found the best right angle fittings are the brass ones that are curved, not the sharp angle nylon / plastic ones.