Performance Trends, Inc.

Producing Quality Computer Tools for Racers and Engine Builders since 1986

Engine Analyzer Plus

Engine Analyzer Plus v3.4 is a Computer Program for Engine Builders and Engineers to Simulate, Predict and Analyze Stock or Race Engine Dynamometer (dyno) Performance.

for Windows XP, Vista, Windows 7, Windows 8, Windows 10

to view the Supplement discussing the Engine Analyzer Plus Enhancements (our mid Level Engine Simulation program) in detail.

Click here for the Engine Analyzer Comparison Table comparing Engine Analyzer Plus with our other Engine Analyzer programs.




The ‘Plus’ version of Engine Analyzer can be ordered when you first purchase the Engine Analyzer v3.4, or can be added most any time after you have purchased it. The enhancements consist of:

  • Calculate up to 20 RPMs in a run.

  • Calculate performance for alternate fuels like Diesel, propane or CNG (compressed natural gas).

  • Estimate Piston-to-Valve Clearance.

  • More graphing features.

  • The ‘Optimize’ feature which lets you pick and modify most any engine specs and watch the effect on the torque and power curve right on the screen. This is great for quickly finding which specs have the most effect on your engine’s performance.

  • Use Full Flow Curve for the head's ports.

  • Use Millimeter inputs for engine dimensions.

  • Customize what data gets reported in the output.

  • You can define which colors are used for various graph lines to enhance screen appearance and printed graph quality.

  • The Duration at .200" is displayed in the Cam/Valve Train specs screen so you can see instantly how cam profile rating affects duration at higher lift.

  • Import Head files from Performance Trends' Port Flow Analyzer flow bench software.

  • Variable Valve Timing (V V T) to let you switch to different cam specs at a particular RPM (like done with many modern, computer controlled engines).

  • Define "dwell over nose" (like "cheater" cams) to the nearest 2 degree increment.

  • Dwell over nose can be different on the intake and exhaust lobe.

  • Specify the cam profile in more detail using "Ramp Rating".

  • Calculate a Ramp Rating based on duration at .050" (or 1 mm, .040") and either seat timing or timing at .200" lift.

  • E85 as a fuel option.

  • Include the "Special Calculations" section in ASCII data files.

  • Many new options for including various data on printed graphs, like comments, torque and HP data, etc.

  • You can now include a "company logo" graphics file on your printouts.

  • You can now include 2 lines of user definable text (like company name and website) on your printouts.

Flow Table

Special Graph Options


Variable Valve Timing (new in v3.4)


Some Printout Options (new in v3.4)



What You Need:

Computer with Windows  XP, Vista, Windows 7, Windows 8, Windows 10.  


What You Get:

Program CD with 280 page user manual and Plus supplement on CD as a PDF file.  Printed manual available.  Program includes all other standard Engine Analyzer v3.4 features.


More Information, Download Demo:

to go to our Demo Downloading page to download a FREE Engine Analyzer Plus Demo.


More Information, Watch Demo Movies:

to go to our Demo Movie page to watch Engine Analyzer Plus Demo Movie .

To Order:

Our DOWNLOAD ONLY option. If you only want the unlocking code and DO NOT want a CD shipped, click on Add to Cart below. You will not be charged shipping.

If you want a CD shipped to you, click on Add to Cart below. There will be shipping charges added to your order. You can still download the demo and get your unlock code sooner with this option.

$199.00 plus shipping
To order a CD with a PRINTED manual, click on Add to Cart. Manuals are included on the CD's but in PFD format. You can still download the demo and get your unlock code sooner with this option.

$234.00 plus shipping

Call 248-473-9230. Visa or Mastercard accepted.

for more price and ordering info.