GT Performance Mods 2005+ Mustang GT Performance and Technical Information

1/4 mile track results

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Old Jun 21, 2005 | 04:52 PM
  #21  
MustangDan's Avatar
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Originally posted by mustp51@June 21, 2005, 4:20 PM
As you say, racing is a mindset. I used to race every weekend for almost three years when I had my '69 stang. If you are around people at the track, you will hear grumblings about 10ths, 100ths, even 1000ths of a second difference, let alone one full second like above!
For one thing, it is a point of pride to do something to modify your car then go to the strip and see your work translated into quicker ET's.
The difference between 12.8 and 13.8 can be huge. It is a whole lot easier and cheaper to have a car with the HP to run 12.8, and teach a 13.8 driver to go that quick. It's all a matter of technique, practice, and more practice!
Now if you have a 12.8 capable driver, but only the HP to run 13.8, no amount of technique or practice will get close to 12.8. Now it comes down to technical ability, money for parts, and the ability to tune your combo to go 12.8. And if someone doesn't have the tech ability to do their own work, it just takes more money.
And it comes down to bragging rights! There are always people who believe their car is faster than someone else's. It's always nice to go to the strip and see your performance in lights and on your time slip at the end of a run!! I have not taken my '05 to the strip yet, she's only two weeks old, but within the next two, I will. I have a buddy who claims his '02 GT with a CAI, pully's, and exhaust , can whip my green hiney! We shall see.
jeff


Thanks Jeff

Good insight
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Old Jun 21, 2005 | 06:06 PM
  #22  
Redfire 05Gt's Avatar
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Originally posted by MustangDan@June 21, 2005, 8:51 AM
In the ¼ mile how far is 1 second anyway? My guess: ½ car length.
100 MPH * 5280 feet/mile = 528000 feet
1 hour = 3600 seconds
528000 ft / 3600 seconds = 146.67 feet per second

So there would be about 10 car lengths (at 14.7 feet per car length) between two cars both doing 100 MPH and 1 second apart...
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Old Jun 22, 2005 | 07:40 AM
  #23  
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Thanks everyone for the tips!!

As requested, here are results from one of my slips:

Reaction +.0550
60 ft 2.1629
330 ft 5.8909
1/8 ET 8.9560
1/8 MPH 80.37
1000' ET 11.58
1/4 ET 13.8030
1/4 MPH 101.55

Other: I had traction controll off for the most part and I was at a track here in Michigan at about 60 degrees and a little windy.

Now, where is my weakness.....reaction time? launch? 60ft? Remember that I have some mods -- Bassani Axle-back, SCT tune, MMR intake.

Again.....THANKS FOR THE HELP & ADVICE!!
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Old Jun 22, 2005 | 07:51 AM
  #24  
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Never dragraced before, and it was a LOT harder than I gave it credit for. I guess it is all in the launch. My first run ever was 14.5 @ 97.8. The second was a pathetic 14.9 @ (I can't remember). Both times I came off the line horribly.
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Old Jun 22, 2005 | 08:16 AM
  #25  
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Vert. times have been between 13.6-13.8, considering you never raced before, I think 14.5 was pretty good.
With a little practice, you'll be in the 13's!
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Old Jun 22, 2005 | 10:03 AM
  #26  
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Originally posted by 05stangGT@June 22, 2005, 5:43 AM
Thanks everyone for the tips!!

Other: I had traction control off for the most part and I was at a track here in Michigan at about 60 degrees and a little windy.

Now, where is my weakness.....reaction time? launch? 60ft? Remember that I have some mods -- Bassani Axle-back, SCT tune, MMR intake.

Again.....THANKS FOR THE HELP & ADVICE!!
Reaction time doesn't factor into your ETs. It only affects who crosses the line first. All other things being equal, a .055 reaction time will win over a .06 reaction. They'll both have identical numbers but the .055 will cross .005 ahead of the other car. You can have a 5 second reaction time and it won't change your ETs. But you probably will cross the line in 2nd place...unless you have a 6 second car! I've been told not to worry about reaction time and practice consistent launches and 60' times. Once that becomes knee-jerk, then start trying for the .001 reaction time!

My best of three runs stock w/Bassani was 13.902 @ 101.3 with a 2.16 60'. I don't have my slips handy or I'd check the interim numbers but 13.80 beats my 13.90. I'd have thought the SCT tune & MMR would give you a little more than that. Your 60' was .0029 slower than mine so that accounts for some loss. The other place for loss is in shifting . Also, what RPM did you shift at? Not that I know what the best is anyway. Were you running 87 octane or 91 or 93?
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Old Jun 22, 2005 | 11:32 AM
  #27  
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Originally posted by Redfire 05Gt@June 22, 2005, 12:06 PM
Reaction time doesn't factor into your ETs. It only affects who crosses the line first. All other things being equal, a .055 reaction time will win over a .06 reaction. They'll both have identical numbers but the .055 will cross .005 ahead of the other car. You can have a 5 second reaction time and it won't change your ETs. But you probably will cross the line in 2nd place...unless you have a 6 second car! I've been told not to worry about reaction time and practice consistent launches and 60' times. Once that becomes knee-jerk, then start trying for the .001 reaction time!

My best of three runs stock w/Bassani was 13.902 @ 101.3 with a 2.16 60'. I don't have my slips handy or I'd check the interim numbers but 13.80 beats my 13.90. I'd have thought the SCT tune & MMR would give you a little more than that. Your 60' was .0029 slower than mine so that accounts for some loss. The other place for loss is in shifting . Also, what RPM did you shift at? Not that I know what the best is anyway. Were you running 87 octane or 91 or 93?


Thanks Redfire 05Gt -- I am running on 93 octane. I usually shifted right at the redline -- but didn't "power shift" as some people have told me to do. I didn't shift out of 3rd crossing the finish line. I was just crossing into the redline in 3rd at the finish line. From what I have heard so far, I need to launch at a higher RPM, 2300, instead of my 1800-1900, and let the tires spin just a little. So do you think I should power shift between 1-2 or just between 2-3?

Thanks!!

Most of the reason I am asking all these questions and asking for some help is because in a few weeks I am going to the track again with some friends which include:
2004 Audi S4
2004 Cobra
2005 Pontiac GTO

Gotta beat the Audi and GTO!!!!
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Old Jun 22, 2005 | 12:19 PM
  #28  
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Originally posted by 05stangGT@June 22, 2005, 9:35 AM
Thanks Redfire 05Gt -- I am running on 93 octane. I usually shifted right at the redline -- but didn't "power shift" as some people have told me to do. I didn't shift out of 3rd crossing the finish line. I was just crossing into the redline in 3rd at the finish line. From what I have heard so far, I need to launch at a higher RPM, 2300, instead of my 1800-1900, and let the tires spin just a little. So do you think I should power shift between 1-2 or just between 2-3?

Thanks!!

Most of the reason I am asking all these questions and asking for some help is because in a few weeks I am going to the track again with some friends which include:
2004 Audi S4
2004 Cobra
2005 Pontiac GTO

Gotta beat the Audi and GTO!!!!
I hear ya!!
93 octane...hmmm. With DTP's 93 tune for the JLT, I managed a 13.233 @ 107.24 with a 2.134 60' on my 5th of 5 runs week before last. The only other mods I have that you don't are UDPs, lowering springs, LCA's and LCA relocation brackets which I think have helped my 60'. The UDP's should bonus me about 5-10 rwhp which I think is only about .1 or .2 on ET (guessing). When I find my slips (I just moved over the weekend), I'll see if any of my other runs on 93 octane had 60' in the 2.16 range. My slowest run was 105mph and definitely had to hit fourth on all 5 runs. I was trying to find the right amount of throttle in 1st after the tires hooked up cause going full throttle would break 'em loose again. I was shifting very hard but not quite powershifting. I think powershifting 1-2 will give you a lot of wheel spin. Not sure though if enough to hurt ET.
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Old Jun 22, 2005 | 12:36 PM
  #29  
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Is everyone that are getting these low to mid 13s running stock tires? I can't imagine these things giving enough grip to get a good launch.
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Old Jun 22, 2005 | 12:41 PM
  #30  
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I'm on stock tires getting 13.4's.
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Old Jun 22, 2005 | 12:49 PM
  #31  
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1/4 mile 13.233 @ 107.24, 2.134 60' (UDPs, JLT w/DTP 93 tune, Bassani axle-back AND Stock Tires!
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Old Jun 22, 2005 | 02:00 PM
  #32  
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Cool

[your completely right there is know way it a half a car i mean i am only 12 and i even know that
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Old Jun 22, 2005 | 02:08 PM
  #33  
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Arrow

but still there perelli raacing tires they say there so good
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Old Jun 22, 2005 | 03:38 PM
  #34  
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Originally posted by 05stangGT@June 21, 2005, 8:41 AM
Well I had a ball for my first time out at the track. It was a private event so I has able to run 13 times in just a few hours! My buddy with a 04 cobra went down the track 18 times.

Well, 11 out of my 13 runs I posted 13.8's at 101MPH. I could not break 13.8!! Most of the runs down the track were with my friend and his 04 cobra....he kicked my butt (most of his times were 13.3's or lower and even two of them in the high 12's).

Is 13.8 times good for this car? I have Bassani axle-backs, SCT tune, and MMR intake.

Let me know what you all think
I ran 13.58 100% stock w/ maunal shifter
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Old Jun 22, 2005 | 03:43 PM
  #35  
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Originally posted by bastang@June 22, 2005, 2:11 PM
but still there perelli raacing tires they say there so good
they are perelli mud and snow tires not the high performance dry tires
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Old Jun 23, 2005 | 10:33 AM
  #36  
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Originally posted by TURBO 05@June 22, 2005, 5:41 PM
I ran 13.58 100% stock w/ maunal shifter

Wow, from what I am gathering from other peoples times...that's awesome!

Maybe the clock from the strip I am going to is wrong....
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Old Jun 23, 2005 | 11:42 AM
  #37  
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Originally posted by 05stangGT@June 23, 2005, 8:36 AM
Wow, from what I am gathering from other peoples times...that's awesome!

Maybe the clock from the strip I am going to is wrong....
Maybe but I think people have heard that one before..."the clock was wrong" LOL
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Old Jun 23, 2005 | 12:03 PM
  #38  
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05stangGT

I went to the track and was having rev limiter problems with my latest C&L tune, R13. There is another revision R16 and I will have to try it with that. My best times are comparable to yours. I never knew how hard it was to do this correctly. My best reaction time was .007, but I was lucky, I blew the red two times also.

I think 3rd gear has got to last until 6800-7000 rpm, so I will have to adjust my rev limiter.

Once I get my car dyno'd next week, I will go back to the track, probably in August.
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Old Jun 23, 2005 | 05:20 PM
  #39  
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Originally posted by MustangDan@June 21, 2005, 9:51 AM
somehow we never thought of trying the Windstar.
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Old Jun 23, 2005 | 05:39 PM
  #40  
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Originally posted by bastang@June 22, 2005, 1:11 PM
but still there perelli raacing tires they say there so good
Hey Tyler . . welcome to TMS.

Yur startin' out real early with this car thing eh? You have great taste in cars and web forums!

I hear if you let some air out of those stock Perelli tires they hook pretty good for mud-n-snows. Give it a try in four years or so there buddy.
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