When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
IDK the exact number, but you must also consider the parasitic loss of an automatic versus a manual.
So you may want to ask the horsepower at the crank instead of rwhp, or state which transmission you are running. JMO.
That is probably a safe limit. It all depends on how rich/lean you run the car.
Every point of air/fuel ratio is an approximate 10% different in fuel... so this has a considerable impact of the fuel flow.