question on phenolic spacers

It's a 4 hole 1 inch phenolic spacer, main reason i put it on is to try ns keep the fuel cool, because obviously the cooler the fuel the better its gonna burn. I hve heard it both ways as well, i hve heard the spacers add low and mid range torque and then i have heard they rob low end torque and give hp up high in the rpms. But i have herd of them adding low to mid range torque from more people then having heard they rob torque.