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Accessport stage 2 flash clarification


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2 years ago I installed the CNT catted downpipe and magnaflow cat-back system to my car. I flashed the stage 2 map and the car has been running fine (as far as i can tell) ever since.

I have now gotten back into tuning/upgrading my legacy and am about to install the Grimmspeed catless up-pipe.


My question is: will I need to flash the ecu with the accessport back to stock, and then re-flash to stage 2 to account for the catless UP, as well as to clear the code for the EGT?

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