Had a discussion with my bro in law about efficiency vs. HP gains yesterday. As with most conversations with him (he is a bowtie minion) things got heated.

In any case, when a gain in MPG is observed does this ALWAYS mean that HP goes up also? I have my opinion, but need some good info to back me up.

Any feedback, links to articles, etc is greatly appreciated!!!



72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.