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Hey everyone. I did open a case with Cobb support and I'm waiting to hear back, but I want to see if anyone else has ran into this issue.
I previously had the stage 2 tune on my 997.1 with just straight pipes.
I got a good deal on the AMS intercoolers and went ahead and bought the Cobb injectors. After having them installed, draining the fuel and filling her up with E85, I went to the shop to flash the car with the Stage 3 E85 map.
For some reason I could not find a map on Cobbs website that matched my ROM ID - B730-5843. I checked on the Alpha stage 3 E85 tune and saw he had a matching map for B730-5843.
Downloaded the map, flashed the ECU. Everything seemed to go smoothly. I turned the ignition off, waited 15 seconds or so, turned the car back on.
The car starts and runs fine, so it seems to have accepted the map. When I plug the AP in it says "Unable to connect to ECU" and if I press the OK button, it starts freaking out and the screen rapidly flashes the cannot connect error until I unplug it.
Anyone who has advice on how to get the AP to reconnect would really be helpful. I want to log the car since its breaking up in boost after 4k.
Not sure if this will help at all but I had trouble finding the e85 file as well. Cobb tech support told me to do a firmware update and it would be included. After the update I could see the e85 file in there. I haven't flashed it in yet to try it, running the 93oct version of the stage 3 at the moment. Might be worth a try.
Just keep trying. I had that weird bug happen to me as well. Just kept pulling the OBD plug and cycling the key. Took literally 10-15 tries before it connected back. Every now and then it'll do it 2-3 times before it connects. I think it's a bug in the new software. Never had this issue until the past 5 months or so.
Thanks everyone. For some reason the OTS Stage 3 map does not show up on my computer, but when I plugged the car into the AP it shows up on the AP itself.
I was able to flash the Cobb OTS Stage 3 E85 Map and it seems to be running pretty well.
It pulls hard, but breaks up a little up top. Looking at the logs, I think the tune is a little on the lean side.
I attached a short pull if anyone wants to take a look. AFRs are 13-14 as it builds boost.
E85 can tolerate quite a bit of leaning out, and it's also relative to how much timing you are running but that does look a bit lean. Post your logs to www.datazap.me and then post the link up here for us to look at your logs.
Just keep trying. I had that weird bug happen to me as well. Just kept pulling the OBD plug and cycling the key. Took literally 10-15 tries before it connected back. Every now and then it'll do it 2-3 times before it connects. I think it's a bug in the new software. Never had this issue until the past 5 months or so.
Mine does this too, one workaround seems to be performing a diagnostic code clear first, to 'flush' the OBD connection and then initiate the map update.
07-24-2016, 08:01 AM
Do a long pull in 3rd gear where safe, 2k to at least 6500 rpm. Need two or there of those to rule out variance. 
Same to you buddy.
