Used Race Chip S Piggyback.
Removed from a customer's car because lease is up. Selling on customer's behave.
The base chip. Latest hardware coming from the automotive industry, engine-specific adjustments, comprehensive services and warranty offer the perfect package to chip tuning first-timers. 5 fine tuning mappings Up to +15% MPG
https://www.racechip.us/shop/bmw/3-s...-332lb-ft.html
$299 new
F2X F3x N55