Maximum PSI Turbo Kits

Stage 1

The Maximum PSI Stage 1 catted turbo kit is the only street legal, factory DME tuned kit available for the E46 M3

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Stage 2

Stage 2 utilizes similar hardware as Stage 1 but incorporates hardware/software upgrades for even more power on MS109 fuel

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Stage 3

Stage 3 utilizes the factory DME with a Maximum PSI engine build using forged internals and a larger Precison turbo.

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Stage 4

Stage 4 upgrades numerous components from Stage 3.  S4 allows you to do a burnout from corner exit to corner entry.

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 Part out or more mods?  AWD 550 twin turbo V8 in for @bootmod3 flash
 Nice dyno comparison of stock, Dinan piggyback, and BM3 stage 1 flash. Mods are Dinan exhaust, intercoolers, intakes for all runs. Dyno runs done in 4th gear, linked AWD. Rwd should see even higher numbers.  White F80 day. One getting MaxPSI downpipes and 93 octane flash, the other for boost leak test and E85 flash revisions

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