Quote:
Originally Posted by RedDevil
If you use extra for acceleration boost you may need regen while maintaining speed.
But when you are accelerating the throttle opens wider which makes the engine produce power more efficiently, while if you regenerate on low power the engine runs less efficiently.
In the worst case the boost replaces efficiently produced direct power by inefficiently produced stored power with charge/discharge losses to boot...
But having boost is not all bad. It makes you go when you need to go, instead of wishing the engine was bigger.
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In the case of the First Gen, assist doesn't come on until the engine is at or close to 100% load. It may hold onto assist if you ease off the throttle, but assist shouldn't ever happen unless you're trying to get more power than WoT can provide. Simply being lighter on the pedal so as not to engage it (learn where max load is and don't push past it) or installing a Calpod switch would be idea.
As others have said, the IMA system doesn't weigh much. The battery only accounts for about 3.5% of the car's total weight, and you'd still want the electric motor in there to more efficiently generate electricity for the DC-DC converter.