Power chips

et2 wrote:
Just can't help thinking if the manufacture wanted you to get max power out of your engines they would make them to operate at the higher edge of the engines capacity. They are set the way they are for a reason.

For someone to tell you to do this or that it'll be ok, then ask yourself if they"ll be their when you start to have engine problems with a open wallet to help pay your repair bills.

When a chassis is delivered to a manufacturer, they have no idea what the total weight of the final vehicle will be so the ECM cannot be optimized for an unknown. That same engine in a commercial truck has to be adjusted for a happy medium since the truck will have to operate between empty and full. Put that engine in an RV and it will be operating most of the time at close to the maximum load, which cannot be predicted until the coach is built and the vehicle weighed. That is why some chip programmers will want a reading of the way the vehicle is actually operating before they make any changes.

As far as having FOUR variables, that is old school when you did not have a computer controlled engine. With today's engines you can improve one aspect of performance and the computer will adjust and also optimize the others, while keeping things within the design specs for that engine. Today's computers can adjust for the different fuels used at high altitudes, whereas in the past you had to re-jet the carb and adjust timing manually.

Feel free to contact Ford or GM and see if they will void the warranty if their ECM is adjusted and still remains within the design specs. That is what Brazel's did and they use the manufacturer's own criteria with their ECM. It will not affect your warranty. They are not to be confused with someone adjusting an ECM for racing performance.
In truth, adjusting the ECM for the actual vehicle weight and use may actually prolong the life of the engine as well as producing fewer emissions.