Quote:
Originally Posted by Elie335
good point.
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Not really...
BMW would still not know if you were overboosting your motor just by switching to cast pistons. They would still be able to handle a moderate increase in boost from a tune, and its not like BMW takes the pistons out to inspect them when they suspect you have been modding your car. Yes it would be a deterrent to boosting the motor more because it wouldn't be as strong but I guarantee most people who do bolt-on's do not know what kind of internals their engine has.