Toyota’s 2ZZ-GE versions found in the U.S. make ten fewer horsepower at 180 hp than the same engine in the rest of the world which has 190 hp. However Lotus has retuned the 2ZZ-GE for use in Elise, smoothing out the torque dip at the 6000 rpm cam changeover point and strengthening the torque in the other rpm ranges. In addition to the improved torque Lotus brought the peak horsepower back up to 190 in their U.S. version of the engine. These adjustments were largely accomplished by reprogramming the Engine Control Unit (ECU or engine computer). Toyota has apparently expressed interest in the changes Lotus made to broaden and even the torque and increase the power. Changes to the Lotus version of the engine are not purely electronic, however, as a new intake and exhaust are also fitted. [color:#FF0000] The exhaust is so fully optimized that altering it reportedly results in a significant power loss. Aftermarket tuners and parts buyers beware[/color]
EU version had a claimed 343 bhp with the US version having ‘only’ 333bhp. Big diff was the US version had the cats in the headers and further down stream on the EU car.
Toyota’s 2ZZ-GE versions found in the U.S. make ten fewer horsepower at 180 hp than the same engine in the rest of the world which has 190 hp. However Lotus has retuned the 2ZZ-GE for use in Elise, smoothing out the torque dip at the 6000 rpm cam changeover point and strengthening the torque in the other rpm ranges. In addition to the improved torque Lotus brought the peak horsepower back up to 190 in their U.S. version of the engine. These adjustments were largely accomplished by reprogramming the Engine Control Unit (ECU or engine computer). Toyota has apparently expressed interest in the changes Lotus made to broaden and even the torque and increase the power. Changes to the Lotus version of the engine are not purely electronic, however, as a new intake and exhaust are also fitted. [color:#FF0000] The exhaust is so fully optimized that altering it reportedly results in a significant power loss. Aftermarket tuners and parts buyers beware[/color]
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[quote=321freeflow][quote=pete757]Surfing tonight found this here
Toyota’s 2ZZ-GE versions found in the U.S. make ten fewer horsepower at 180 hp than the same engine in the rest of the world which has 190 hp. However Lotus has retuned the 2ZZ-GE for use in Elise, smoothing out the torque dip at the 6000 rpm cam changeover point and strengthening the torque in the other rpm ranges. In addition to the improved torque Lotus brought the peak horsepower back up to 190 in their U.S. version of the engine. These adjustments were largely accomplished by reprogramming the Engine Control Unit (ECU or engine computer). Toyota has apparently expressed interest in the changes Lotus made to broaden and even the torque and increase the power. Changes to the Lotus version of the engine are not purely electronic, however, as a new intake and exhaust are also fitted. [color:#FF0000] The exhaust is so fully optimized that altering it reportedly results in a significant power loss. Aftermarket tuners and parts buyers beware[/color]
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Muppets. [/quote]This is old news…That fool doesn’t have a clue as to what he’s talkin about. The 2ZZ made 190 bhp everywhere when tune properly no matter what exhaust the OEM supplyed…
Put a proper tuned header without hard 90* bends and it will make even more with ECU tuning to take advantage of the increased flow but remember if it can’t get in it can’t get out…
