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In addition, Turbosmart's E Boost Street features an over boost shut down protection function where if the max boost setting is surpassed boost will automatically be cut to protect the engine. Lastly, a programmable boost correction factor can be set using the E Boost Street. This feature allows a tuner to combat boost drop at high RPM which results from a build-up of exhaust back pressure. By ramping up the solenoid's duty cycle, the power band can typically be extended by another 1,000 RPM.
To finish the install of our turbo system, 5523 Motorsports constructed the oil delivery line using Earl's Performance Plumbing -3 AN Speed-Flex stainless steel outer braid, PTFE lined hose and stainless steel Speed-Seal hose ends. Note, with the EFR series turbos an oil pressure restrictor is not needed.
To drain the oil back to the block, 5523 Motorsports constructed the oil drain line from Earl's Performance Plumbing -10AN Perform-O-Flex with swivel seal hose ends. Earl's Swivel-Seal fitting are anodized, reusable fittings which can be swiveled for easy orientation after assembly. The ability to clock the hose ends in relationship to the hose makes working with AN fittings and steel braided lines much easier and is worth the extra few bucks.
5523 Motorsports then constructed the coolant lines from -6 AN Perform-O-Flex again using Swivel-Seal hose ends. The coolant inlet is fed from the stock location on the front of the SR20 block, while the coolant outlet is fed back into the coolant neck. Earl's Performance Plumbing 14 MM x 1.5 mm to -6 AN adapter in combination with OEM Nissan crush washers were used on the coolant port of the turbo, coolant neck, and block.
All of the oil and coolant for the turbo as well as any additional rubber vacuum lines in the vicinity were then wrapped in Earl's Flame Guard sleeve. It's important to use Flame Guard that is the next size up from the line its covering. For example, a -12 size Flame Guard would be used to cover a -10 line.
