I guess it would make sense to get all the couplers together since I will need to put a cold side pipe together anyway. And some form of intake...
You kind of have to since your cold side pipe is going to be 2.75" to 3". The RL cold side pipes are 2.5" and trying to get those couplers around a bigger pipe is not easy. I'd go with a 3" pipe and you will want bigger couplers for that for sure. Nylon reinforced silicon couplers will work...these are the ones that look like they have little white dots on the end edges. This is the nylon molded into the silicon.
Robotech, are you using the rSP function on your eboost 2?
No, I use the Boost Correction function (Cor)
page 30 in the manual.