strange thing hapened with me I have 205 Mi16 & my friend has also 205 Mi16 but with S16 gearbox & we ran with each & i was beside him from the 1st gear till 240 kmh need to know why & the S16 gearbox can damage his motor or what ??

S16 has the same gear ratios as the Mi16, unsure what you mean by damage

They're just the same aren't they? Can't see how it would damage his car.

no man the gear boxes is not the reason cuz it`s a same ratio in all gears i think ...
it must be just the clutch disk need to replace with new one...wallaho a3lam