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Just want to chime in on this build. We went with the RB transmission as they are plentyful, cheap, lite, bolt in w/ stock driveshaft, and the NA RB isnt a torque monster. I was planning the HKS VPC for a little while as sort of a way to get it on the road. I wanteded something that would control ITBs better because a MAP sensor will start losing resolution in the higher RPMs when the ITBs will be just too quick when the throttle changes. This is where the Megasquirt comes in with its mixed MAP/Alpha-N mode that switches back and forth from MAP to Throttle Posistion to read from the sensor that will give the best response. MAP at low rpm and tps at higher rpm. A lot of things we are doing now is seeing what would work best as this ECU is rarely paired up with a Nissan motor. Now with native CAS support for the SR/KA/RB cam sensors, a world will open up for Megasquirt and Nissans.
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