Testimonials

Posted on October 5, 2016, updated on April 13, 2017 by Bob

Recently we’ve gotten some positive feedback we wanted to share:

“Thank You for the prompt reply and formulas you provided, now onward…….. Just want to tell you how much your books helped me in the tuning area. The reading was technical but interesting and informative. I found myself reading each chapter twice before moving on to the next as it flows chapter to chapter. Now I understand why and how the different aspects fit together and can make better calls and decisions. The 5000 Horse Power On Methonol book goes with me to the track so if need to, I can use the
formula’s and figure it out long hand on paper. Looking forward to positive results.”

Regards,
Rickey Smith

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“Do any of your books touch on the use of the Pete Jackson blown alcohol barrel valves? … Bob got your books they are outstanding!!”

Keith Grieves

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‘bracket drag racing using ProCalc to maintain AFR with jetting adjustment for air changes … unheard of 0.0005 second ET repeatability during bracket racing competition from early morning all day to late night’

Denis Page, Clinton, Ma, USA

New ProCalc videos

Posted on September 29, 2016, updated on September 29, 2016 by Bob

ProCalc easier to use with new instructional videos. Save MFI tuning time with ProCalc. Check out youtube links on http://airdensityonline.com/pro-calcs/

Video Demo for High Horsepower Tuning For Mechanical Fuel Injection

Posted on September 5, 2016, updated on August 1, 2016 by Jennifer

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!

Check out our video demonstration for Blown Nitro Racing on a Budget

Posted on August 30, 2016, updated on August 1, 2016 by Jennifer

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!

Demo Video for Big Block Book

Posted on August 22, 2016, updated on August 1, 2016 by Jennifer

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 !

Demo Video for our Small Block Book

Posted on August 15, 2016, updated on April 13, 2017 by Jennifer

Check out a demo video we recently made for our small block jetting book:

If you want more information about this book, check it out!

Video for 5000 Horsepower on Methanol

Posted on August 8, 2016, updated on August 1, 2016 by Jennifer

We recently made a demo video showcasing our book, 5000 Horsepower on Methanol! Check it out:

If you want more information about this book, check out our store!

Check out a video for Fuel Injection Racing Secrets

Posted on August 1, 2016, updated on August 1, 2016 by Jennifer

We’re starting to delve into video! For our first couple of tries, we’ve made demo videos of each book. Check out the video we made for Fuel Injection Racing Secrets:

Or get more information about the book in our store!

Fuel Injection Nozzle Fuel Velocity

Posted on May 6, 2016 by Bob

Recently, we did an analysis of fuel velocity coming out of a mechanical fuel injection nozzle. Fuel velocity is a function of fuel pressure. Higher pressures make higher fuel velocities. We found that fuel velocities from common fuel pressure ranges were below the port air velocity in normally aspirated engines. This could explain why, in some applications, nozzle location dramatically affects horsepower. Slower fuel velocity may reduce inlet air flow. More information is in our new book about high horsepower tuning of normally aspirated racing engines.