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      07-16-2021, 09:43 AM   #5
mike@x-ph.com
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Drives: 07-335/12-328/18-M4/21-M4CP
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Quote:
Originally Posted by sspade View Post
Bootmod3 stage 1 flash tune will give you a nice bump in power and requires no hardware modifications. There's no way you're parents can tell.
+1

You can also add an intercooler, charge pipe, and catted downpipe. I doubt they would ever notice these mods.

Just don't upgrade the exhaust
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