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With enough spread on the frame arm mounts the a-arms can be very sturdy. Two different times I snagged the same tree solid ,came to a dead stop immediately at LS at probably 35-40 mph with my busa buggy. Approx 2000 #'s. I pulled the 2 of the mid board hubs bolts from the carrier 1 time and 4 completely out with the last 2 pulled badly the second time. Neither time was an arm damaged. Neither time were the frame mounts bent or damaged in any way.
When I swapped my buggy from swing axle VW/VW motor to Subaru motor/Subaru transmission, and built my multi link rear suspension, I didn't have a clue what I was doing. I just built everything and hoped for the best! At ride height, my axles are actually angled forward, compared to everyone else's that are angled back. I am not a perfectionist and it has always worked, so I left it alone. I have probably had people notice this and thought, "That will never work"! Glen would have told me to put away the crack pipe. LOL!
on the turbo 2.3 the stock inj's were 35lb and factory set for 14 psi with prem fuel switch on. guys run 18 psi on them all the time with a base psi of 43. so i find it very odd that you only have a 20 psi window no matter the base pressure. that would lead me to believe that your pressure reg is to blame. not sure and i assume you swapped the fuel filter to be sure it wasn't plugged or near plugged. are you running the vam meter off the stock lima 2.3 system? i ask as this sounds like an issue with the old mass air flow system. almost like your rising rate fuel reg has a ceiling it cannot get past.
btw , only half the order showed while i was at the dunes. received an e mail that the rest shipped today.