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True but the point I was trying to make is that it seems to have a benefit at low speeds and rpm and a deficit when the temperature and pressure of the unheated intake air defeats the radiated & conductive heat from the block and components and cools the plenum. This is something I didn't expect and since I've never seen a car or heard of one with speed/rpm controlled TB heating I doubt others have either.
Disconnecting it at urban speeds 25-50mph makes a major improvement. Extended 65-75mph+ is the only time it seems to actually decrease economy.
Last edited by Rosieuk; 08-28-2017 at 09:51 AM..
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