I would say map 5 because the max boost is 16 PSI vs only 13 with map 1. If I were you I would run Map 5 because you have full bolt-ons. Just IMO.
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08 135i N54
- Vargas Stage 1 Turbos with Billet wheels
- BMS Intake, BMS Charge pipe, AR DPs, Stock mids, berk race muffler delete
- JB4 G5 Map 3 75 Meth Additive with RACE DME flash
- MS-109 and 100% meth injection (Single CM12 nozzle)
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