T W A U ... The Chase....today's...
Film, Media & TV0 min ago
No best answer has yet been selected by madein1978. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.Different cylinder heads and compression ratios, according to:
http://en.wikipedia.org/wiki/Toyota_S_engine
The engine management system can also be programmed to give different power characteristics from the same engine.