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Discussion Starter #1 (Edited)
I purchased a used SVT with a jrsc previously installed. I am in the process of removing the supercharger. It is a "low boost" setup and uses the old power card, I assume the ECU was flashed by Jackson Racing as it is marked with a sharpie similar to this one (not a pic of my actual ECU).



So, once the supercharger is off, can I reflash the ECU with a new NA tune using an unlocked Xcal? I'm not sure if the Xcal will have some issue overwriting the current tune on the ECU...

Also, the only wiring that should have been done is for the powercard, which is spliced into the MAF and fuel injector harness?

There has definitely been some additional wiring under the steering column by the fuse box and ODB port, I hope this if for a previously installed alarm or stereo and not related to the JRSC....
 

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jackson racing didnt flash the ecu for the low boost. it just had that black box that went to the maf.

That ecu looks like a ford reflash to ZED0
 
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