Thread: Turbo Boost PSI
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      07-14-2011, 12:19 PM   #4
Dackelone
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Also... on a 135i the DME only has tables for boost up too 1bar... so that is why no one goes beyond that level. Other than the piggy backs that trick the DME anyways. As far as I know/heard... only Giac has done the proper DME line coding to make a "flash tune" run higher than 1bar (14.5 psi). I do not know what boost level a 1M runs... but 12 or 13psi is a safe bet.