ecu

[shaf]

hi can sum1 tell me how can i tell the difference between a standerd ecu and a after market one. all this performance stuff is new to me havent a clue:rolleyes: also wat dose (TBC) stand for  thanks

[sadgoth]

In essence, an aftermarket ECU (APEX\'i Power FC, Microtech LT8S, Haltech E11v2, MoTec M400/M600/M800, HKS F-Con V and AEM) allow total control over the engines systems including aspects like; fueling level, fuel/air ratio, ignition timing, boost control, etc. They are much more flexible than a stock ECU which has the perameters set by the manufacturer. As the stock ECU is designed with stock parts in mind it is not necessary to make it adjustable, if you alter the setup within the engine or ancilleries (induction kits, de-cat exhausts, boost controllers to up boost levels) the stock ECU can only compensate slightly. This will mean that fueling, timing, etc will not be optimised for the new setup. Depending on how far away from stock you take the car the result can be catastrophic!

A fully programmable ECU allows mapping to suit the cars setup and how it will be driven, so you can have it mapped for economy, quick acceleration, lots of mid range for circuit use, etc

That is a very basic explanation, I\'m sure some of the more technical guys will be able to go into it further.

cheers

[shaf]

thanks 4 the information uv highlighted the main functions of a ECU, but the one in my car how could i tell if its a aftermarket 1 or a standerd 1

[spanerhed7]

my apexi power FC has it written in big letters accross the lid....

[sadgoth]

As mentioned by Spanerhed7, most of the after market ECUs do have their name & model printed over the top of them. Your best bet if you aren\'t sure is post a pic of the ECU that u have (found under the floor at the end of the passenger footwell) and someone will be able to tell you what you have.

[20B_boy]

Thats about the size of it; it will be the same size/shape - difference will be either a sticker if its been remapped but isnt programmable (e.g. RE-Amemiya REDOM, Knightsports 4-Beat etc) or some thing a bit more permanent-looking like the Apexi Power FC which has the Apexi logo moulded into the casing...

[shaf]

i try to get a pic the information i found on the sticker is as follows

                                        N3A7
                                       
                                        E G I

                                 N3A7     18    881C

                                079700_ 5930
                                   
                                      12V

                                    DENSO

                                005 930H

if this makes any sence pls let us no thanks

[Initial-D]

Sounds standard to me matey.

[scooby_si]

likewise slightly different actual numbers but the standard one i have sat infront of me now has exactly the same stuff on it....
Si

[shaf]

cheers ever1