the greddy kit comes with engine management thats very conservative to begin with and is set at a low boost level. people on ht have stock b16's with nothing more then headstuds and a new headgasket making over 300whp. its not safe to do so in my opinion with an otherwise stock bottom end but, b series engines have showed a good bit of resilience to blowing up...unless your name is tony..sorry, i had to say it.