my mates actuator isnt holding anymore and he has decided to get a -31. the car is only running standard but he is thinking of chipping it so this seems the best idea.

but for the moment he only wants to run standard. his boost gauge is in bar. its a 90 spec escort turbo withta hearts and diamond ecu . what bar should he be running and does the -31 come preset to a amount . or is it a case of playing with it to get it right .

stupid question but is it winding it in , which increases boost ??

wheres the cheapset place to get a -31??