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Our cars are completely numb when revving from idle. I don't know whether it's the drive by wire or the tune, but they rev very slowly. I suspect it is the tune mainly.
When my car is warming up, the throttle response is great, super snappy, but when fully warmed up it goes back to sluggish.
My tuner made some changes that improved the throttle response as well, so I know the throttle response can be improved at least in part by the tune.
Of course, lightening the rotating parts (flywheel, clutch, driveshaft) will help with throttle response, but the main issue lies more within the tune, or the type of induction IMO.
My old race car with carbs had insane throttle response. I saw other cars with the same engine, but fuel injected, that had much slower throttle response.
I think fuel injection gives less of a shot of fuel with throttle movements. Carbs have accellerator pumps. I think fuel injection basically does the same thing (a shot of fuel to get things up and running) but the throttle response is still very sluggish on our cars, especially with such high compression.
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