Unfortunately flash reprogramming used until 1996 and later-so the tricky tunes that can be done on flash chip ECM’s won’t work for the 1993. What you can do though is install a supplemental hydrogen unit, convert to E85, inflate your tires with nitrogen, use synthetic oil, and use a nano technology engine treatment.
HHO enrichment really does work-you can easily turn your van into a hybrid-there are many products available but I recommend you read the Official Guide to Supplemental Hydrogen first-this is a very good resource to introduce the technology and give you the ability to make an informed decision. Here is a link to the Guide and there is also a free e-course that you can sign up for.
While flash tuning is not available for your model year, the computer controls of older vehicles like yours are very easily manipulated with simple electronics and you actually have much greater potential for substantial fuel mileage gains than a newer vehicle. If you are interested I can give you more information about the best products out there and where you can purchase them.
Any fuel injected vehicle can be easily converted to run on E85, unleaded or a combination of the two. There is alot of disinformation out there about E85 and its detrimentors have a variety of agendas. The truth however, is that E85 burns cooler, cleaner, emits less harmful emissions, increases horsepower, and will extend the life of your new motor because it does not create carbon deposits and buildup like unleaded does. Most all unleaded fuel sold today has an ethanol content of 7-10%, so any propaganda about it doing engine damage or being incomaptible with fuel injection system components is false. The price of E85 is expected to stay lower than the unleaded price, and should actually continue to decrease as cellulosic ethanol becomes more available and the infrastructure is developed. Generally, it takes about a third more E85 than unleaded to run the engine, but when combined with supplemental hydrogen and sensor signal adjustment products, you will end up with a net gain in mileage and a substantial fuel savings within the first year. Utilization of E85, and Supplemental Hydrogen also qualifies you for Tax Credits and clean fuel deductions, and frees up all the carbon credits that you would normally expend each year on the driving of your vehicle.
Nitrogen tire inflation is becoming available across the country. Many dealerships offer the service, as do some tire stores, and Costco offers it in all tires bought there. Nitrogen does not escape through the rubber tire, and provides a much more consistent pressure that is not affected by vehicle weight or temperature and will maintain the correct pressure over long periods of time-unlike aire inflation, which gradually decreases over time as air molecules escape and condensation inside the tire develops. The results of nitrogen inflation are immediately evident in the smoothness of the ride and handling, and will provide modest fuel savings which increase with vehicle weight and load due to the reduced friction of the tire to the pavement.
Synthetic lubricants provide better lubrication than petroleum based oils and the brand new molecular technology of nano treatments greatly reduce friction and also add to the mileage equation.
Proper alignment, clean air filters, reduced cargo weight, driving habits and many other factors affect fuel efficiency. I can refer you to specific resources that have detailed information on these factors and techniques you can use to boost your mileage. From your posts I gathered that you were looking for actual products and procedures for your new engine rather than advice on driving habits.
