In our AIR SCOOP SIZE article from “Freebies” on our web site, a vehicle MPH speed (called critical air scoop speed in our methanol book) is introduced. It is the vehicle or vessel speed where the air going into an air scoop matches both the speed of the racer and the air consumption of the engine. (more…)

Pro Calc is now available for your internet ready device: iphone, lap top computer, desk top computer, or other web ready device. It will calculate jetting and nozzles in mechanical fuel injection engines in the pits or staging lanes for weather or tuning adjustments. (more…)

Our books tell how to make a lot of horsepower with fuel injection through precise air-to-fuel-ratio control; done with engine nozzle & jetting setup and tuning. Airdensityonline developed a jetting & air-to-fuel-ratio calculator for web ready devices: cell phone, IPAD, lap top, IPhone, etc. (more…)

In 2006, we provided a free article Tax Time all about taxes and racing deductions in the USA. With tax season approaching here in the US, we thought we’d discuss a few more ways that racers can utilize their auto expenses when dealing with the tax man. Racing deductions can free up some of your income to buy more racing parts. With the proper care in running it like a business, racing deductions from other sources of income can pass the IRS audit score.

RACING & TAXES IN THE USA: If you have excess deductions, beyond your income (more…)

Use Pro-calc to run your fuel injection jetting prior to a flow bench test, dynamometer test, or race outing. (more…)