When I purchased the car I was told it had an "economy" map 

This vrs was much stronger in pull to any vrs I looked at 

I get an average of 56 mph driving mix of smart and giving it some.... 

 

In 3rd and 4th gear hard pulls I get smoke put of my exhaust between 2,5k and 4k revs 

Also on start up I get a little puff of black smoke but then goes on idle.. 

My mate said because it's mapped and I have a piper cat back it will 

Other people say I have a boost leak and my turbo will blow at some point.... 

Should I be worried? 

Anyone else have this? 

@Kristian_vrs What colour is the smoke? This can be highly diagnostic. Also, do you know who's map it's running?