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NHRA Wild Horse Motorsports preseason testing

Read those spark plugs for good NHRA drag racing preseason tuning; check https://airdensityonline.com/track-results/Wild_Horse_Pass_Motorsports_Park/ for current air density, density altitude, water grains, temperature, humidity, uncorrected barometer, wind speed, wind direction, dew point, saturation pressure, vapor pressure in imperial or metric units; yesterday’s record  and tomorrow forecast  already determined in air density units.  Check https://airdensityonline.com/free-calcs/ for free […]

New Years Day Drag Racing Sacramento Raceway

test & tune Mon 12 to 4 12-31-18 racing Tue all day 1-1-19 event air density / density altitude / grains / map: https://airdensityonline.com/track-results/Sacramento_Raceway event air density forecast: https://airdensityonline.com/track-forecast/Sacramento_Raceway/ event info: http://sacramentoraceway.com/ air density of other US tracks: https://airdensityonline.com/us-track-list/ air density for International tacks world wide: https://airdensityonline.com/tracks-worldwide/

Impulsing the fuel injection fuel curve

We are seeing racers from time to time who open and close a fuel injection bypass to pulse the fuel curve.  According to our numerical analysis of air to fuel ratios from our ProCalc fuel injection calculator, bypass jet sizes much bigger than 0.050 inches are too large if they are shut off or on […]

Holiday Best Wishes from racecarbook.com / airdensityonline.com

Merry Christmas & Happy New Year to all of our friends around the world.  We are expanding our reach through airdensityonline.com with air density tuning info to many new motorsports tracks and courses around the world, especially south of the Equator. Bob@racecarbook.com Bob@airdensityonline.com new location: PO Box 461, Rancho Cordova, Ca 95741-0461 new phone: (916) […]

Your racing engine blew up. Now what do you do?

After that, you repair all the mechanicals that are broken. You review what went wrong. You revise your tune-up to try to avoid it again. For fuel system adjustments, try precise numerical control over tuning using air/fuel ratio! Without knowing it, this is something you already do: When you adjust fuel injection jetting from plug […]

Solutions to Idle Lope in Mechanical Fuel Injection

Customer Inquiry One of our customers recently inquired about idle lope in his funnycar dragster.  ‘What can I do to minimize idle surge on our funny car?  It’s difficult to stage at the starting line.  It has a Bruno (torque converter), Lenco transmission, Enderle Bird Catcher fuel injection hat, Enderle K type barrel valve with […]

Rons Low Cost Throttle Body Fuel Injection CFM & HP Capabilities

Rons Fuel Injection has provided us with air flow data for their throttle body setups.  We analyzed the power potential of these simple and very popular fuel injection systems. Racing engine size capabilities were determined at the flow CFM numbers provided by Rons Fuel Injection.  For 100% air density, horsepower capabilities were also determined. Rons […]