ok so I bought my sierra cosworth from a chap that knew nothing about it,


I was given a folder and there are recipts for the following
bosch 803s and chip -32 actuator.


its dynod at 243bhp and running 9psi I thought with 803s and chip it should be able to run 15psi and be able to make 330+


tempted to get a boost controller and give it the 15psi and see how she goes.


thought plz ?


it has t 34+big intercooler so no worries about making the boost or cooling.