Tech Articles | Horsepower Innovations

Mystery of the "Black Goo" -- Solved?

The Mystery of the "Black Goo" -- Solved? Since the first day a gear-head decided to try running e85 in his carbureted engine the...

Detonation, Pre-ignition, and the Danger of a Hot Spark Plug in an Ethanol Fuel Racing Application By: Eric Niefert, Owner ...

This article is a chart that shows stoichiometric ratios of ethanol, gasoline, and various E85 blends. It also gives target tune numbers...

This article explains the effects of ethanol / E85 on common race parts and our recommendations on how to deal with the unique...

This article explains the in's-and-out's of e85 kits and conversions. It includes typical questions to ask your builder before...

E85 Tuning Tips Because pump E85 can vary seasonally in some geographic areas, it may be necessary to adjust jetting or air bleeds to...