The other thing to keep in mind though is that the Access Port will also give you the ability to load a MAP that goes with other parts you put on your car, such as a Turbo-Back Exhaust. For instance, here is their Dyno-Chart of a Stock 2.0 Liter WRX compared to the same car with thier Stage 1 Map on it: So if all you are doing is changing the running parameters of your engine, how much power can this really make?Ĭobb has posted Dyno Charts of their Stage 1 maps, and in virtually every case, a car can gain a substantial amount of power just from a re-flash of the ECU. For this reason, it is better to use this for a Re-Flash that you won’t need permanently such as a “Valet Mode” Map. Because it is only saved in the RAM, if you re-set your ECU, or the system loses power, the Re-Flash will be lost. This kind of Re-Flash goes much quicker than a Base Map, but it is not as permanent. This Re-Flash is not saved to your ECU’s hard-drive, but is rather saved to your ECU’s RAM. The other type of Re-Flash is called a “Real-Time Map”. That means that they will remain there until you choose to change them, or remove them, even if you re-set the ECU, or the system loses power, etc. When you install a “Base Map” (as you will have to when you install your Access Port for the first time), all of the new parameters will be saved to the ECU’s hard-drive. If you think of your cars’ ECU in terms of your home computer, it is actually similar in that it has something equivalent to hard-drive memory, and RAM memory. The first is called installing a “Base Map”. One interesting thing about Cobb’s Access Port, which is unique, is that it can do two different kinds of “Re-Flashes”. This process of up-loading new parameters is called “Re-Flashing” your ECU. Once it up-loads these new parameters to the cars computer of ECU, they are saved so they will remain there until you choose to change them. The Access Port can change things like Ignition Timing, Fueling Curves, Boost Curves, etc., and by doing do, it will allow your motor to produce more power. Simply put, the Access Port plugs into your OBDII Port (which your car all ready has), and is able to communicate with your cars’ computer and give it a new set of parameters. The term “Re-Flash” refers to going in and changing some of the parameters that your cars’ computer is using with the goal of improving your engines’ performance. There is a computer in your car that is in control of all of the engine’s running parameters, and it is constantly monitoring information from a number of different sensors to make sure that your engine is operating at its peak performance. If you have been reading about the Cobb Access Port, or engine management for that matter, you have probably come across the term “Re-Flash”.
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