All the previous owner of my new SII could tell me was "its been chipped mate"!

Is there anyway of telling what chip is fitted?

I'm not really sure if the engines waitings to die or not! It shows about 20psi on the boost gauge, and pulls like crazy.

Full magnex system, K&N 57i kit and a cheap looking under bonnet boost adjuster are the only mods I know of.

It's kicking out a bit of blue smoke on decelleration, mostly noted in 2nd and 3rd gear

Is it likely someones just turned the boost right up and thought what the hell?

Am I right in thinking a bigger intercooler would be a good place to start?

Any advice much appreciated please!!!!