WH Statesman LS1 5.7 mod question

[Gus58]

I just picked up a stato with a 5.7 LS1. It has a twin sports system a k&N air filter and bigger injectors but a standard chip, can anyone suggest a suitable chip or point me in the right direction on getting the most out of this motor without changing the cam? If the potential is there I may as well use it.

[ryan101]

Finish the exhaust
Mafless tune
Over the radiator air intake

[VY Rossi]

Diff gears

[Munz]

Dunno why it would have bigger injectors - did you or the previous owner replace them - if they had they would of revised the tune to suit

[Gus58]

previous owner replaced the injectors. I have done nothing to it.