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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 Time for a bigger shop!  VAC Motorsports coming through with full Maximum PSI spec ported s55 head for our latest build. This F80 has all the good stuff from Pure Turbos, Evolution of Speed, Fuel-it, Manley, Pauter, Split Second, and of course us! Email for your F series needs!
 #basic  N55 X5 35i DME unlock.

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