Reprogrammed ECU

[Seasonal Squash]

I was thinking about purchasing an ESS SC system. It is my understanding that I have to ship them my ECU for reprogramming. What exactly do they change?

I am concerned because if I decide to sell my car in the future, and take out the supercharger, what will happen? Am I going to be left with a jacked up ECU that doesn't work correctly without the supercharger attached? Do I have to ship it back to ESS to have it reprogrammed for use without an SC?

Also, I heard that installing the larger injectors, which are required to prevent detonation, will make my fuel consumption reading off by 20%. Is there a work around to this small problem?

Thanks.


<font size=-1>[ This Message was edited by: Seasonal Squash on 2003-03-21 02:30 ]</font>

[MarvelPhx]

On 2003-03-21 02:29, Seasonal Squash wrote:
I was thinking about purchasing an ESS SC system. It is my understanding that I have to ship them my ECU for reprogramming. What exactly do they change?

>> They change the fuel/air and ignition maps and set the "ECU" to use the new signals from the adjusted MAF signal for proper operation.

I am concerned because if I decide to sell my car in the future, and take out the supercharger, what will happen? Am I going to be left with a jacked up ECU that doesn't work correctly without the supercharger attached? Do I have to ship it back to ESS to have it reprogrammed for use without an SC?

>> I would send the DME back to ESS to have it returned to stock. Now, BMW might be able to do it or simply replace your DME with a new one as well to make it simpler.

Also, I heard that installing the larger injectors, which are required to prevent detonation, will make my fuel consumption reading off by 20%. Is there a work around to this small problem?

Yes, the gas mileage will be off by 21%. Mine is and I don't pay much attention to it. ESS is working on a small tool that will correct the MPG calculation.

Thanks.

<font size=-1>[ This Message was edited by: Seasonal Squash on 2003-03-21 02:30 ]</font>