Any particular reason why you'd go for the narrower diameter for the MST? It's an option for 'Stock' vs 'Hybrid' turbo.
Surely even if you were going to stick with stock forever, a larger diameter would not be a negative? Perhaps to avoid the hard transition to the narrower aperture at the turbo itself?
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2018 ///M2 LCI, LBB, 6MT...
Current Performance Mods:
CSF FMIC, ER CP, Fabspeed Cat, Aquamist WMI, GFB DV+, NGK 97506, BM3 (Stage 2 93 OTS), CDV delete, UCP, M2C/M3/M4 Strut Brace, M3/M4 Reinforcement Rings
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