Recently Bob and Jennifer contributed content for an online publication. The amount of information they needed was minimal but Bob and Jennifer decided to expand on the content and provide it for anyone who might benefit. Key elements to engine tuning Optimum Air/Fuel Ratio in drag racing Is Ignition Timing the First Thing to Dial […]
Is there an optimal air/fuel ratio for drag racing engines? While air/fuel ratio is important for fuel system management, there is no one optimum air/fuel ratio. These depend on engine type, fuel type, and engine modifications. Below are examples of some optimum air/fuel ratios for specific drag racing engine examples: engine induction fuel air/fuel ratio […]
Getting Day Old and Past Air Density Data for Tuning After numerous requests, historic air density data was added to the track listed in airdensityonline.com. Now race tuners can retrieve past air density data for race tracks and courses all over the world. Here is an example of one of 23 racing facilities listed for […]
Disclaimer: All of the following engine profiles cannot be guaranteed to work adequately right out of the box. In any of these engine profiles, jetting combinations were determined from similar running engine profiles previously analyzed with ProCalc. Spark plug readings and engine temperature measurements are needed from incremental runs to determine if jetting adjustments from […]
Setting up a new MFI fuel system: main bypass adjustment to control the air/fuel ratio adjustment of the combination of the main bypass and nozzle sizes to maintain an optimum fuel pressure range from the lowest to highest engine RPM. Changing the main bypass jet for tuning affects the air to fuel ratio and fuel […]
Outlaw ProMod drag racing setups with mechanical fuel injection are hitting over 4,000 horsepower. The oversize PSI screw blowers at high overdrive ratios are common. These are not legal in most national drag racing classes. But in eighth mile outlaw racing, they are common. Horsepower levels in the 3,000’s are typical on the launch with […]
When we released our latest book, High Horsepower Tuning for Mechanical Fuel Injection, we received a very kind letter from Jim Kinsler of Kinsler Fuel Injection: To: Bob Szabo I have enjoyed reading through your “High Horsepower Tuning for Mechanical Fuel Injection”. Very nicely done! Bob, it is nice to see how thoroughly you do […]
We recently made a demo video for our latest book, High Horsepower Tuning for Mechanical Fuel Injection for Normally Aspirated Engines. Watch it here: You can check out the more information about this book including the index and table of contents in our store!
We’ve been trying our hand at recording video! Hopefully it gives viewers a glimpse into what kind of books we provide. Check out our latest video for our book, Blown Nitro Racing on a Budget: You can learn more about this book in our store!
We recently recorded a demonstration of our big block book for mechanical fuel injection. Check it out here: Get more information about our book here: Jetting for Racing Mechanical Fuel Injection: Big Block!