the parts you have used are all lag increasers ,are you sure that it was worse with kent cam and standard turbo. What kent cam are we talking about .A -31 with the correct amount of preload and pneumatic control does not have any affect to LAG compared with a -34 set correctly.Ecu's can have problems the cvh requires high advance in nasp mode, it is common for the presure transducer to fail in this area but be fine on boost .The affect of this is serious lag.Compression does affect lag .