Quote:
Originally Posted by ChrisM4
The stock tune is probably already pretty aggressive on pump gas so there’s likely less headroom there.
Agree the marketing claims are ridiculous.
That’s not much in terms of a performance increase to lose your warranty over though.
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It will not void your overall warranty; however, BMW has the ability to see evidence of it in the diagnostic logs - even if it’s removed before taking it in for service. Unless you have a blown motor or other engine or drivetrain-related problems, it will largely go unnoticed. On the flip-side, you will have a hard time getting a blown motor replaced under warranty if they see evidence of this modification.
This is a pretty well established product, so I’d say it’s a low-risk mod.