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That was happening to me on my 2005 GT. All I did was buy a can of Throttle Body cleaner (not Gumout) and sprayed all the black soot out of the TB. I had someone sit in the car with the key on and...

I multiplied my MAF curve by 1.6 to get less than 5% trims with an Airaid CAI. Wideband showed in the very low 12:1 range AFR at WOT. A bit on the safe perhaps.

I tried 50% after putting long tube headers because I had read in a few places that 50% was a good place to start after putting on long tubes, but it was too much. I ended up using 15% and it was...

My 2005 Mustag GT 4.6 3v does not show the same layout in the FUEL\OPEN&CLOSED LOOP. Doesn't look like there is a Pedal Enrichment option back in 2005. I'll try blending the BASE fuel table and see...

I always have wondered why the base fuel table has values that are either lambda=1, or lambda=.86 (or .82....whatever you WOT set to), but there is no transition. I know the PCM will interpolate to...

Changing the TCS value in the spark torque to a 1 did the trick. Thanks everyone for the input.

Thanks for the reply. I already have the Tip in limits set at max=0, and min=7000 rpm. Also, Torque Module Switch is disabled. I just changed the TCS value in the Spark Torque Ratio table to 1, maybe...

Thanks Sultan....I would like it to be just Borderline. My scan shows spark source is running on Borderline at upper end WOT, but I'm getting these dips in the timing data. The dips happen when the...

Looking at spark source data on 2005 Mustang GT scan file, pretty much stock except for a CAI, I'm seeing different spark sources in the log file. The common ones I see are base (MBT), borderline,...

Thanks for the reply.........but I'm confused what "should be fine" means? I know the car will run on 87 ok, so 93 will for sure be fine, if not a waste of octane $ if the factory tuned for 87, which...

I can only log knock sensor output , but the units are not in crank degrees, they are in millivolts. So I'm just logging direct knock sensor output in volts (mV). Whereas if I log GM car, I see...

I've put 87 octane in my 2005 Mustang GT 3v 4.6, and it seems to run fine. I put 93 octane in it and it seems to run fine. This leads me to believe the car/engine came from the factory set up for 87...

Very excellent info, if I change tire height or gear, I'll just disable the VID and type in what I have straight up in the Speedo section of the tune. But, I still don't know how to see what is in...

Thanks for the info guys...........I clicked around in the editor, but can't seem to find the VID block to see what it shows for gear ratio.

I found where the "use VID block" info is ENABLED in...

This is not really what I would call a difficult tuning question, but wondered if anyone can explain it. I have a 2005 Mustang GT, bought it new. On the differential cover there is a small sticker...

Thanks Eric..............

Looking at other tunes in the repository, it seems the upper left cells on the MBT table are pretty much stock. Which makes perfect sense for not effecting the idle. Looks like the lower right where...

Thanks for the reply. So if the MBT table is used for other calculations, that are sensitive to messing things up, and in my stock tune the MBT values are lower than Borderline knock, (except at low...

2005 Mustang GT, 5 speed, Airaid CAI, Flowmaster 40's......I was reading somewhere that the FORD 4.6 3v calculates two possible timing values. One from the Borderline table and one from the MBT...

I have an '05 Mustang GT as well. Just tuned in the MAF curve after adding an Airaid CAI. Took about 3 tries, and got trims below 3% for the most part. I was wondering if after dialing in the main...

What does the MAF voltage look like at full throttle, say between 4000 and 6000 RPM? The curve in your tune file reflects the CAI larger than stock diameter, so this alone will help in moving the...

I got the same thing going on with my 2005 GT Mustang....... B2S1 O2 reading is 1.95 mv max? I also hooked up my Innova handheld scanner and both O2's were cycling fine. The other bank O2 read fine....

Lighter flywheel engines tend to rev a little quicker, but have less stored energy so they get pulled down a bit more on the RPM's during a launch. The less rotating mass makes them not idle as...

Sounds line the line pressure is too high, or more likely, the forward clutch accumulator piston in the valve body is stuck or the spring is broken.

Just checked my '05 Mustang GT 4.6 stock tune and Pedal Pos WOT starts @ 460, and ends @ 545 like you said.

Very strange that .50 thing is !