1990 Isuzu pickup

Dear AquaTune,Had your system put on my daughter's 1990 Isuzu pickup. I know I called you to let you know how it went because I was impressed. Here are the figures showing the improvement. Namely, we are now getting an additional 7.2 miles per gallon which comes to about a 39% increase on this vehicle. We also noticed a smoo thness in how the engine runs and the horsepower is tremendous. Thank you again.