The M380 is linear as you say, which makes the RS feels natural and usable, less turbo charged, which I like, it’s a night and day improvement from a standard RS, so if the MSD400 is even more of the M380 style, I would certainly entertain it, the Dreamscience was fast but the delay and heavy surge style delivery doesn’t make for controllability, the M380 rewards for holding onto the revs, it redlines really easily, without any dip in performance near the rev limit, if you want a RS that performs brilliantly without heavy mods, it’s a great bang for buck improvement, no downsides at all.
Mountune M380 package
Mishimoto throttle Pedal Spacer
Mountune Hard Charge Pipes
JCR super low seat frames x 2
DSC Suspension Controller