Got some questions for the LPG experts.

When you lean an LPG mixture, am I correct in saying it doesn't increase EGT like a lean petrol mixture?

I'm curious if this following idea could improve economy at part throttle conditions. If the very limited information I've read of EGT's barely increasing by lean LPG mixtures, wouldn't it make sense to lean out LPG to allow much more air into the motor to reduce pumping losses against a very restrictive throttle body?

Does a lean LPG mixture affect mixture burn speed which could result in knocking?

Any other ideas or comments?