wow serious. Ok well top speed of an 2006 E55 AMG 160MPH speedo read past that. I went 159mph and that is a purpose built European tuned car compare to a stock USDM built/possiable built in canada too Integra. Top speed by your ecu 125MPH even though you can push it a bit more. To reach 140MPH you going need the following: First the right set of tires and rims