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#6: 02-25-2013, 10:51 AM
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Location: Central MA
Car: 628whp E92 M3
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Here's another we just did last week. Baseline is our Stage2 stock tmic tune. Owner's VF40 died out (150k+ mile car). All he did was replace the VF40 with a VF52. There's more in it with the addition of a upgraded intercooler. The stock BPV was leaking pretty bad as well.

200rpm Spool difference between turbos

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