$1500 - $2000 - Remember that even ECUs that come with preloaded maps will require initial setup to set base timing, adjust the map configuration to your specifics, actual tune time, multiple maps, etc.Estimated total for a standalone, add ons, and tune time would be no less than $4,000 The basic breakdown of cost for an Elite 2500 for a 07 WRX is below. Many of the lower cost ECUs do not have have enough inputs to even run this setup and many of the middle tier ECUs will be maxed out with the basic setup and you still haven't factored in any additional logging or features.īeyond the cost of the ECU and adapter harness, you will need a wideband so that the ECU can adjust properly on its own once the tune is done. 1 x AVI for Wideband (this commonly is CAN or built in to the ECU so it may not utilize an AVI).1 x Digital Input for flex fuel (usually this is a driver to go standalone).2 x AVI accelerator pedal inputs (main + sub sensors).2 x AVI throttle position inputs (main + sub sensors). Consider a dual AVCS STi with drive by wire. This can present a serious problem depending on your application. The cheaper the ECU, the fewer inputs and outputs. Each ECU has a different number of open slots for inputs and outputs. Yes, there are cheap standalone ECUs out there, but this is a scenario that is very much "you get what you pay for". There are alternative tuning options for now like Opensource (Tactrix, Romraiader, ECUFlash, Carberry, etc.) and ECUTek. Generally speaking it would be a scenario where there are so many modifications that retaining emissions equipment is no longer feasible and the car would be moved to a track only situation.įor now, we suggest doing whatever is possible to stick with the stock ECU. How should I decide if I need to run a standalone?ĭepending on the number of modifications the threshold for standalone is probably lower than it was until recently. This will likely be a discussion between your tuner and mechanic to determine your goals and whether to reach them a standalone is required. Yes, standalone ECUs have their place but the use case for them is fairly limited. Also factor in the base tuning that comes equipped to handle any driving condition from 120 degrees at sea level to minus 30 degrees at 10,000 feet you start to see that in action. If you look at the number of inputs and outputs the stock ECU processes without issue (close to double most aftermarket ECUs when you consider cruise control and emissions equipment) you realize how sophisticated they are. The research and development dollars put into the stock ECU is likely to be greater than the dollars invested for all aftermarket ECUs combined. There is no aftermarket ECU that can compete with the stock ECU in terms of ability to work in all conditions while maintaining reliability and refinement. Pretty simply put, the difference is the ability to fine tune an aftermarket ECU to do one specific thing extremely well, while the stock ECU can handle any situation while maintaining engine performance and reliability. We hope that Cobb will come up with a solution for this problem in the near future so we can have the safety and reliability that comes with the flex fuel sensor input. The closest thing would be to tune 2 maps, one for E85 (ethanol) and one for standard pump gas. If you have a standalone, both with and without gauge widebands could be configured to data log through the ECU just as you would with the Cobb AP.Īs for the Flex Fuel there is not currently a solution for this with the Cobb AP. If you purchase our AEM Wideband with Gauge you can still have a display for you to monitor while driving even though it does not log to the ECU. The current solutions to the wideband problem is to log the wideband externally using a laptop (both of our AEM widebands could be configured to use the serial input) or utilize the wideband that your tuner will have attached to their tuning device or dyno. Without the ability to bring in outside data, the ECU can't make adjustments for the changes in the ethanol blend. The 2 most common situations are when e-tuning and utilizing the rear 02 to log wideband input with the rest of critical engine data so that calibrations can be made without being local to the tuner. With the Cobb updated tools with their tuning software the biggest current issue we see is datalogging and ECU adjusting based on an outside input.
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