If the previous owner of my sti was at stage 2. and put everything back to stock before selling, how would the STOCK car run with a stage 2 map?

 

also would the stage 2 flash be lost if i disconnect the battery to reset the ecu?

 

All that info can be found on cobb's website. Pretty crazy.

http://www.cobbtuning.com/

 

but it would not run optimally...

I am assuming that the owner sold the car to you with the Cobb AP...and that it is still married to your car?

Simple solution would be to leave the AP as is and buy yourself a nice downpipe and catback...and throw a K&N drop in filter in to bring it to what Cobb calls Stage 2...great improvement over stock.

otherwise:

1. Remove the stage 2 base map from your ECU
2. Download STage1 91 octane maps from Cobb's site (Base and Realtime)
3. connect AP to your computer
4. remove all stage 2 maps from AP
5. install stage 1 maps to your AP
6. Flash in stage 1 base map

Look in your manual for detailed instructions on how to remove and add basemaps onto your ecu...

 

thanks for the info!!!

 

I always though it was bad news to run higher WG duties with stock DP/TBE, so if it were me I'd get on it quick. Maybe it's not as big of an issue w/ the STi set up?