GT Performance Mods 2005+ Mustang GT Performance and Technical Information

1st quarter mile runs

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Old 4/9/05, 07:10 PM
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Best run from about 9

60' 2.120
330 5.927
1/8 9.062 @ 78.14
1000 11.709
1/4 14.069 @ 99.15

This was with the Diablo 93 perf tune and t/c off. The track was hooking great regardless of my 60' times. I was only getting about a foot or two of spin then it hooked up. I still have the tq converter flashing issue at 5K in 4th. Without that I would have been in high 13's.

Now, for the Diablow tune. The modify tune section? No worky. I upped the shift MPH's by 20 for each shift. Result. NO CHANGE. The !@#$ thing was shifting 1st to 2nd at 6k, 2nd to 3rd at ~5800, and 3rd to 4th at 5800. Regardless of what changes I made to the Diablo the shift pattern WOULD NOT CHANGE.

A couple of runs I attempted to manually shift and it was a disaster. 1st to 2nd worked great. Shifted at 6500 and got a nice chirp from the tires. But the 2nd to 3rd shift, I GUESS because it comes so fast, was smacking off the rev limiter. I was never able to get a good shift from 2nd to 3rd, so I started sliding it up into D after the 1 - 2 shift. Didn't help my times any.

I had a good time and was faster than 99% of the other Mustangs there. Saw a high 12's WRX, and saw a high 8 second- 156mph car, think it was a OLD camaro? nova? can't remember. I knew it was gonna be fast when I saw the chute on the back and wheelie bars :worship:

My wife, on the way back, says " I don't know why you're upset, you were faster than a lot of the cars there" I was pleased that I did well against other Mustangs, but was quite preturbed that I can't even match other 05's even with the 4.10s.

I'm seriously thinking about getting the Alternative Auto XCalibrator and seeing the difference.

Chris
Old 4/9/05, 07:31 PM
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got my best time beat by over a second (1.03)

you have my FIRST time beat by about 2.1 seconds though lol
Old 4/9/05, 07:35 PM
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Originally posted by Fazm@April 9, 2005, 7:34 PM
got my best time beat by over a second (1.03)
Considering you're running a V6, I don't think that's a good thing!
Nice times btw.

Chris
Old 4/9/05, 07:41 PM
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last time i was at the track i saw an 05 gt (manual) run a 13.8, no idea if any mods. Havent personally seen any of those "stock" 13.2 or 13.3 runs.

My goal is just to get low 14's. Waiting for a good v6 tuner, CAI that is more than an air filter and 2 inch piece of plastic (and maybe a true cai) and put some posi gears in, most likely just some 3.73's cuz i drive a lot.
Old 4/9/05, 08:12 PM
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Don't get down. I've owned a bunch of Mustangs and this is by far the best auto ever put in one. I'm going with the Alternative Auto programming because they are working on the auto. I feel most people cater to the standards and the auto's end up with a so-so program, but I could be wrong. I just feel it's smarter to go with someone who's actually racing what you have.

Now if you do call Alternative make sure you let them know you have a auto. I ended with my X-cal and CNL programmed for a 5 speed, so I gotta wait again. They are good to deal with though.

Thanks Mike
Old 4/9/05, 08:38 PM
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the auto is great in the 05 mustang, someone on here has a v6 auto with just a tune that pulled a 14.9 with a gtech.
Old 4/9/05, 10:29 PM
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Originally posted by My Blue Heaven@April 9, 2005, 7:13 PM
Best run from about 9

60' 2.120
330 5.927
1/8 9.062 @ 78.14
1000 11.709
1/4 14.069 @ 99.15

This was with the Diablo 93 perf tune and t/c off. The track was hooking great regardless of my 60' times. I was only getting about a foot or two of spin then it hooked up. I still have the tq converter flashing issue at 5K in 4th. Without that I would have been in high 13's.

Now, for the Diablow tune. The modify tune section? No worky. I upped the shift MPH's by 20 for each shift. Result. NO CHANGE. The !@#$ thing was shifting 1st to 2nd at 6k, 2nd to 3rd at ~5800, and 3rd to 4th at 5800. Regardless of what changes I made to the Diablo the shift pattern WOULD NOT CHANGE.

A couple of runs I attempted to manually shift and it was a disaster. 1st to 2nd worked great. Shifted at 6500 and got a nice chirp from the tires. But the 2nd to 3rd shift, I GUESS because it comes so fast, was smacking off the rev limiter. I was never able to get a good shift from 2nd to 3rd, so I started sliding it up into D after the 1 - 2 shift. Didn't help my times any.

I had a good time and was faster than 99% of the other Mustangs there. Saw a high 12's WRX, and saw a high 8 second- 156mph car, think it was a OLD camaro? nova? can't remember. I knew it was gonna be fast when I saw the chute on the back and wheelie bars :worship:

My wife, on the way back, says " I don't know why you're upset, you were faster than a lot of the cars there" I was pleased that I did well against other Mustangs, but was quite preturbed that I can't even match other 05's even with the 4.10s.

I'm seriously thinking about getting the Alternative Auto XCalibrator and seeing the difference.

Chris
Go to the 91 tune,i have sonic 05 gt and run 13.788 stock.I leave it in drive,take off t/c and o/d.No run yet on tune but i tryed the 91 and it was a blast around town.Thay say the 91 is good on the auto stang.I will let you know when i run it on the tune.
Old 4/10/05, 02:04 AM
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Well I havn't had mine at the track yet, just way to busy, but I have G-Teched it at my favorate rural dragstrip and here are all my results so far

@ 700 Miles
13.89 @106.6
13.85 @107.9 0-60mph 5.27

@1000Miles
13.63@109.5
13.63@106.9

No Power shifting yet as I don't want to bag on it, and the last run was made with traction control on as I forgot to turn it off. car is bone stock complete with the hydrocarbon filter still installed.

I've been to the track lots with my other mustang and my g-tech results for that car are the same as I get at the track, other than the MPH at the end which is usually 2-3mph higher on the g-tech. I've even ran the g-tech at the track and the 1/4 time was .02 slower on the g-tech so I believe the results are darn close.

I'd be real suprised if I couldn't bang off a 13.5 or better next time I get a chance.

and I'm not doing any mods of any kind to the car till it is broken in and I have hit a plateau in 1/4mile times.
Old 4/10/05, 02:14 AM
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Originally posted by My Blue Heaven@April 9, 2005, 7:13 PM
Best run from about 9

60' 2.120
330 5.927
1/8 9.062 @ 78.14
1000 11.709
1/4 14.069 @ 99.15

This was with the Diablo 93 perf tune and t/c off. The track was hooking great regardless of my 60' times. I was only getting about a foot or two of spin then it hooked up. I still have the tq converter flashing issue at 5K in 4th. Without that I would have been in high 13's.

Now, for the Diablow tune. The modify tune section? No worky. I upped the shift MPH's by 20 for each shift. Result. NO CHANGE. The !@#$ thing was shifting 1st to 2nd at 6k, 2nd to 3rd at ~5800, and 3rd to 4th at 5800. Regardless of what changes I made to the Diablo the shift pattern WOULD NOT CHANGE.

A couple of runs I attempted to manually shift and it was a disaster. 1st to 2nd worked great. Shifted at 6500 and got a nice chirp from the tires. But the 2nd to 3rd shift, I GUESS because it comes so fast, was smacking off the rev limiter. I was never able to get a good shift from 2nd to 3rd, so I started sliding it up into D after the 1 - 2 shift. Didn't help my times any.

I had a good time and was faster than 99% of the other Mustangs there. Saw a high 12's WRX, and saw a high 8 second- 156mph car, think it was a OLD camaro? nova? can't remember. I knew it was gonna be fast when I saw the chute on the back and wheelie bars :worship:

My wife, on the way back, says " I don't know why you're upset, you were faster than a lot of the cars there" I was pleased that I did well against other Mustangs, but was quite preturbed that I can't even match other 05's even with the 4.10s.

I'm seriously thinking about getting the Alternative Auto XCalibrator and seeing the difference.

Chris
take it easy chris. i think u saw my times from last week,not too bad. next friday i go in for more service on my sct and installation of jlt kit.
numbers from last week:
60 2.037
330 5.710
1/8 8.715
990 11.229
1/4 13.50
mph 102.49
Old 4/10/05, 04:12 AM
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I'm gonna call Alternative and see what they can do for me as I don't think at this point the Diablo is getting it done. Unless the gear is somehow HURTING me I think I should at least be in the high 13's, or am I wrong?
Old 4/10/05, 05:53 PM
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Originally posted by My Blue Heaven@April 10, 2005, 4:15 AM
I'm gonna call Alternative and see what they can do for me as I don't think at this point the Diablo is getting it done. Unless the gear is somehow HURTING me I think I should at least be in the high 13's, or am I wrong?
With 4.10's an automatic, and a computer tune I'd be PO-ed if I wasn't at least in the low 13's
Old 4/10/05, 06:58 PM
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Not sure why you say an auto is not the way to go. There have been plenty of great auto runs. I can do the research for you if you want and supply proof. Sounds like you spun the tires out a good bit, and may have some issues. But I don't see a problem with my auto, or autos in general. My car personally, which is an auto, does 0-60 in 4.7 seconds, 1/4 mile in 13.6 @ 102, 60' in 2 seconds flat. And I haven't even put my 4.10's in yet.
Old 4/10/05, 09:51 PM
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Chris Auto's are well into the 13's.With both the DP and the SCT tunes.
Donno whats up with your runs.But if your popin 6500 and still hittin 4th.......somethings wrong for sure.

Give Alternative Auto a call.There R&D car is an 05 auto GT.They have a SCT tune out now just for the 05 auto GT.

Also Precision Converter Industries will build you a converter slightly over stock stall.
Heres there no# if your interested.

800-649-7866
Old 4/10/05, 10:06 PM
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Originally posted by Stangers@April 10, 2005, 9:54 PM
Chris Auto's are well into the 13's.With both the DP and the SCT tunes.
Donno whats up with your runs.But if your popin 6500 and still hittin 4th.......somethings wrong for sure.

Give Alternative Auto a call.There R&D car is an 05 auto GT.They have a SCT tune out now just for the 05 auto GT.

Also Precision Converter Industries will build you a converter slightly over stock stall.
Heres there no# if your interested.

800-649-7866
Having an '05 auto, here are a few of my observations. 4.10's actually hurt this car in the quarter. I think 3.55's are the best gear for the '05 autos. I ran my car a few weeks ago with 4.10's, using both a Predator tune and an SCT tune, and ran almost identical runs (14.02@98mph). A car with the same mods, running the stock 3.31's and cutting the same 2.0 60ft times, ran consistent 13.6's@101mph. Go figure.

As for PI, they will be coming out with a Stallion converter for the '05's in a few weeks. They are located only a few miles from where I live and I have been in contact with them for some time about my car. Like someone said earlier, they will be happy to restall a stock converter for you if you like, but will charge a $200 core charge. I think I will wait for the Stallion. Alternative Auto is running a prototype on their auto and it has helped them get into the 12's with only minor bolt ons.
Old 4/11/05, 08:03 AM
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Brodie, do you have a link to Alternate Auto's site? I've been thinking about getting a torque converter for my auto. Or what about PCI? Do they have a website?
Old 4/11/05, 08:54 AM
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www.alternativeauto.com

Precision Industries is www.converter.com
Old 4/11/05, 10:01 AM
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Thanks.
Old 4/12/05, 03:37 PM
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Good tips. And I will definitely be getting the 4.10's after doing more research. By the way, I got a 13.1 second 1/4 mile time with my g-timer yesterday on the way home from work. And I don't even have 4.10's installed yet. Nothing wrong with this auto at all. 0-60 was 4.7 seconds. And I still have some room for improvement as far as the launch goes.


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