Originally Posted by x5_43444

My friend has a stock BMW X5 E53 4.8is 2005 model


and it is much much much powerfull than the new x5 2009 4.8i


i know that the difference is 25 .. but it really shows ..

maybe cause the new x5 is havier?

i tried to have a race but its really pathitec cause hes getting 0-100 in 6.1 sec and i get them in 8.1 or in my best condtitions 7.9 !


One of my friend has modifyed his ECU and even though the E53 owner just