Northstar Engines and System Technical Discussion Discussion, 02 STS simple things to help performance in Cadillac Engine Discussion; Whats up, I own A 02 STS and i was wanting to know what are some of the simplest and ...
Automobile(s): White Diamond '03 DHS (with DTS floor shift)
Re: 02 STS simple things to help performance
Since you are new to the forum I repeat what we have been told by a well respected former member who was extremely knowledgable (to say the least) about the Northstar. GM developed it as a high performance engine and "All the low hanging fruit has been picked at the factory. Nothing was left on the table". The engine already produces 1 hp per cubic inch of displacement. In other words, GM already did it for you. Opening up the exhaust may give you some minor gains but that is about it. Save your money for maintanence and enjoy the fireball as it is.