What's the diffrence between a big turbo model engine and a small turbo engine? Are te smalle one's difficult to tune and are they strong to have 500BHP?

 

Someone?

 

There is only one ST and that was the Escos only main difference is Garrett T25 turbo and Ford EEC management about 300BHP is the limit for these and even that isn't easy.

Engine is still as strong as BT models.

Martin