What can be expected ofinstalling alarger throttle body? Will you get worse gas miliage?

Any info for the newb would be greatly appreciated.

 

better airflow, better throttle response, if anything it will make the engine work less harder drawing in air through tight ducting... if anything it will help increase fuel economy, but you got to ask someone with a larger throttle body, im just assuming

 

Higher horsepower in the high RPM range, however you will loose a tiny bit ofhp/torque in the bottom RPM range.