Buick Century 1998 - 2005 Engines
Select the Buick Century 1998 - 2005 engine that matches your vehicle to see its real standard and upgraded horsepower and torque.
Even within one Buick Century 1998 - 2005, a smaller engine and a larger one can respond very differently to the same tuning stage — which is why we list all 2 separately rather than quoting one figure for the whole generation.
Frequently asked questions
Which tuning stages does the Buick Century 1998 - 2005 support?
It depends on the specific engine — pick yours below and its performance page will show exactly which stages (Stage 1, and Stage 2 where supported) are available.
How fast can a Buick Century 1998 - 2005 file be turned around?
Typically a few hours from upload, tracked live in the member panel once your request is open.
Is ECU remapping safe on the Buick Century 1998 - 2005?
Yes, when done within the limits set for that specific engine — which is exactly what our stage options are calibrated to. Every file is worked by someone experienced with that engine family.
How do I identify my exact Buick Century 1998 - 2005 engine?
Check the ECU sticker under the hood, or the engine code on your vehicle documents — either one will match against the list below.