turbos and superchargers and equliburium oh my!!!!!

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also, second or third hand info from engineers at garrett: twin scroll doesn't make a lick of difference on most gas engines unless the turbo is HUGE. i think this would esp be the case on 4 cyls where you have a fair amount of time between exhaust pulses at a given engine speed. it'd be nice to have a header designed for it just to open up turbo choices for you, but i mean, it probably shouldn't be a huge consideration and wouldn;t make nearly as much different as wheel size/pitch/weight/blade design etc.