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      06-18-2012, 09:17 AM   #4
ken1137
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Drives: BMW S1000XR
Join Date: Jun 2011
Location: Gilbert, AZ

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2009 e90 335i  [6.40]
+1 ^^^...imo it depends on how you define sleeper. The Cobb is great but limited to Stage II, but very simple to load and return to stock. The JB4 has to be connected to the ECU, but the upside is there are a few Meth integrations you can run for more HP. GL
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