corrupt base tune?

[JonT]

I've been having issues with my 08 Mustang GT. When it's on stock tune, I get the codes p2193 and p0183. I've checked for vacuum leaks, compression, bad connectors, voltages and resistances, o2 sensors, etc. I then brought it to a performance shop to be diagnosed. Everything seems to check out. The only thing they said it may be is a corrupt stock tune. I have a SCT X3/SF3 with Bama tunes and I know once, right around when this started, I tried to load the base tune and it said it failed on the SCT tuner. It eventually worked and has been working. Is it possible to am getting these errors because the base map is corrupt or am I missing something?

 

[sman247]

Is the car running rough?

 

[redfirepearlgt]

Do you mean P2193 OR P0193? IF P0193 and P0183 are present you may have a faulty fuel rail monitor module located on the driver side fuel rail. You can always unplug and reseat the sensor in case it is simply a poor connection. This is assuming you fat fingered the DTC code when typing.

No mods to the car other than the tune you were running? If so I'd take the car and have the PCM reflashed to stock at a local dealer or trustworthy shop you deal with that has that capability. That would eliminate doubt in the flash. Then its a matter of whether or not you still get those DTC codes.

I am assuming that you were having issues before you decided to flash the car back to stock?

 

[JonT]

The only issues I had before this was a bad o2 sensor before, which I swapped out when I swapped the exhaust manifold for bbk short tube headers. When I swapped the headers that's when I noticed the problem. Yes it's the p2193 code. Also, with the performance tune in (from bama), I get the codes p2198 and p2196. I also just recently replaced the MAF Sensor.

My engine mods include Ford racing 0 degree spark plugs, walbro 400lph fuel pump, ford racing cold air intake, and zex nitrous (which hasn't been connected since I replaced my engine), bbk shorty headers. I was building a nitrous setup but stopped .

 

[JonT]

With the stock tunes, the car is running really rough and the rpms fluctuates a lot. Eventually, with both stock and performance tune, the rims will idle at 500rpms

 

[redfirepearlgt]

The headers may require some retune in your setup. I see nothing in BBK's description that says "no tune required". Second when you did this shorty swap I assume you had to unhook the O2 sensors. It has happened many times to the best, but you can get the sensors crossed when reconnecting them. This may be the cause for your 2196,2198 codes. Recheck and recheck. There are manuals on this site that will show you proper routing on the O2 sensors. You may wish to google O2 sensor connections as well. I know this sounds crazy but even the guys at Brenspeed admitted to making this mistake on occasion...that is how simple it can be to cross them.

As for the 0183 my guess is that with the factory tune the FPDM is being pegged due to the larger fuel pump and thinks there is a problem with the sensor. Even BAP's require recalibration of the fuel system to accommodate the higher pressure generated. So that may explain the 0183 code.

Last, double check all of your flange connections on your header install. A small leak can cause O2 sensor alarms. We pulled the cat on the drivers side to do a clutch swap on my 13 and in the process did not get the cat flange properly seated. This caused an O2 sensor lean code to crop up after about 100 miles of driving. It would clear and then come back. Can't remember the code at the moment but it was rear sensor related on the Drivers side (bank 2 I believe). You may be able to see black traces of exhaust around the flange if it is leaking. That is how we found this leak. A lighter can also be used and watch for the flame to get blown out or become very unstable while passing it around the flanges with the car idling.

Hope this helps. Just calling upon experience based on issues I have had and upgrades I have done. Brainstorming is how things get resolved. One person's input may be wrong but it may jog another person's mind to come up with the correct answer. Just trying to help. Good luck.

 

[JonT]

Bama said there was no tune required for the headers. But I had them alter the tune for the fuel pump. However, I am not able to upload the tune to my tuner because the software isn't opening up on my laptop (unless I'm in safe mode, but then it won't recognize the USB port).

 

[Dino Dino Bambino]

The headers may require some retune in your setup. I see nothing in BBK's description that says "no tune required".

Shorty headers don't require a tune 'cause the cats and O2 sensors remain in their original position.

x2 on the rest of your post.

 

[redfirepearlgt]

Shorty headers don't require a tune 'cause the cats and O2 sensors remain in their original position.

x2 on the rest of your post.

Wasn't sure. BBK never stated one way or the other. Thanks. I always went LT's when upgrading from factory.

 

[redfirepearlgt]

Bama said there was no tune required for the headers. But I had them alter the tune for the fuel pump. However, I am not able to upload the tune to my tuner because the software isn't opening up on my laptop (unless I'm in safe mode, but then it won't recognize the USB port).

You may need to contact SCT about the connectivity issue after first trying to update the SCT Device updater software in the event that is your issue. I am assuming the PC is working fine.

You have uploaded tunes to the device with that laptop before right? Just asking I can't take things for granted.

 

[JonT]

yeah I have

 

[redfirepearlgt]

Just checked my SCT flash unit after doing the latest updates to my PC and everything still works fine so WIN updates (which I have had cause issues with editing software being rendered no longer functional) isn't effecting anything at least with respect to WIN 7 format PC. Must have a gremlin in your laptop. I'd first try deleting and reloading the software since it isn't even wanting to open except in safe mode. May want to also check to see if your antivirus software is blocking the software from running for whatever reason. You could stay off line and disable anti virus, and your firewall to see if you can then get it to work. Otherwise I am at a loss. I hate computers even though I am A+ certified. Only did it to comply with a company I worked for one time. Good luck.

 

[86GT351]

Is your firmware updated in the hand held itself? I have seen that before with it outdated something happens to the tune.