Car computer programming OBD2 Scan Tool modification method

Automotive ECU modification  OBD2 Scan Tool easiest conversion the stored procedures chip way, replace the chips of different programming, as long as the ECU backplane apart, unplug the original chip and then put on the new chips will get away, because some of the older E-ROM chip can only be written into the program once, so each time you modify the program shall burner program carved into the blank chip to replace the original chips. In recent years, a lot of the new car's ECU can repeatedly read and write Flash-Rom (flash memory) chip, do not modify the program to replace the blank chip can be loaded directly, much more convenient than the E-Rom.
But both will join what form of chips, original and chip tuner design protection design to prevent decoding of copy, modification, chip modifications dealers first make each car data uploaded to the chip The tuner to certification body serial number the ECU number Year / specifications. Data to determine the related program spread to the dealer's computer technician and then burner to write data to a blank chip or original jack for the connection factory to detect computer chip within the ECU Flash-Rom program update. This form of ECU modification method does not give the fans any room for adjustment, but the benefit is worry Province, is very suitable for no or only slightly altered engine (intake and exhaust systems) in the original car. OBD2 Scan Tool
It needs to be noted that, when it comes to ECU modification, most people are just staring at the mix of hardware, like put on the car after a famous ECU will have immediate power performance boost, this is indeed a big misunderstanding on the modification. ECU is just a tool, a different category and brand differentiation depends on your actual needs. It all boils down, modified ECU's effect depends on the programming skill and whether adequate test equipment (such as professional use of the air-fuel ratio table dynamometer machine, etc.). Imagine if programmers only holding a laptop, sitting in the front passenger position and owners of "Speed" on the side of the road, side seat of your pants to adjust the amount of oil and ignition timing, which is both dangerous and not science, tune out the effect may be worse than (of course, on the degree of modification of the general street car, this method is basically desirable). The racetrack, you often see engineers on-site with the laptop tuning program in the the original  obd2  modification program on minor adjustments in accordance with the procedures of the weather, track conditions, but it will not deviate from the original modification program too.

In fact the the modified ECU largest cost is not in the hardware but in software, to develop a whole set entirely in accordance with the ECU program tailored to the individual modified car, you need an experienced programmer, together with other technical staff to work on the dynamometer days or even longer. After all, if the adjustment technology, however hard, or the lack of professional equipment, should adopt some famous brands of chips or follow the plug-in additional computer random process, these  VAG Diagnostic Tool may not be the best ECU modification, but it is definitely the safest and most cost-effective method.