These are remanufactured Gen 4 E38 LSx ECUs. They are compatible with any 58X Gen 4 LS Engine. We reprogram these computers to remove the VATS (Vehicle Anti-Theft System / Chip Key) and many of the emissions related codes that are typically triggered when using these engines in conversions (EGR, Rear O2, Catalytic Converters, etc.). We can program these ECUs for any stock engine configuration (4.8, 5.3, 6.0, 6.2 etc), any injector size, any stock MAF, MAP, etc. We also reflash these ECUs to output the correct signal to drive your stock tachometer and to interpret the speed signal from whichever transmission you are using. The only thing we do not do are performance tunes.
If you would like to expedite your order: Please fill out the exact year/model of your engine, intake manifold, injectors, MAP sensor, MAF sensor, Tire Size, Gear Ratio, transmission type, and Car you're swapping into the notes section of your order, and that should allow us to ship without delay.