PERFORMANCE CHIP FOR MAZDA RX8
Do these things work? How do they work? I keep seeing them on ebay.
Will it harm the engine in the long run? Are they worth it?
http://www.ebay.com/itm/NEW-PERFORMANCE-CHIP-FOR-MAZDA-RX8-2004-2005-
2006-2007-2008-2009-04-05-06-07-08-/161498053920?
pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3ARX-
8&hash=item259a08bd20&vxp=mtr