GT Performance Mods 2005+ Mustang GT Performance and Technical Information

Just gopt my car dynoed...

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Old Feb 24, 2006 | 06:47 PM
  #1  
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well i fnally got it dynoed, three runs, and well results werent what im looking for:

1st run was 262.4 hp 275.9 TQ

2nd run 263.6 hp 278.1 TQ

3rd run 263.7 hp 276.8 TQ

horrible, with the mods i have [img]style_emoticons/<#EMO_DIR#>/banghead.gif[/img] I should be at least around 280 hp!

My a/f ratio was about 10.2-10.4 [img]style_emoticons/<#EMO_DIR#>/icon24.gif[/img] [img]style_emoticons/<#EMO_DIR#>/icon24.gif[/img] [img]style_emoticons/<#EMO_DIR#>/icon24.gif[/img]

i need to call my tuner...im pissed [img]style_emoticons/<#EMO_DIR#>/banghead.gif[/img]

what do u guys think? SOmething wrong huh?
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Old Feb 24, 2006 | 06:52 PM
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Well the good news is your a/f is pretty rich so you should be able to pickup additional power right away from leaning it out. How much? Its hard to say.

I feel your pain.......... my previous disappointment with dyno numbers has been well documented, although its been a couple of months and the car seems to run stronger now. I'll get it back on the dyno this spring.

Good luck,

Tom
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Old Feb 24, 2006 | 06:56 PM
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yea it sux man [img]style_emoticons/<#EMO_DIR#>/crying.gif[/img]

So i should bring my sct xcal back to my tuner huh? tha would be a good idea [img]style_emoticons/<#EMO_DIR#>/rolleyes.gif[/img]
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Old Feb 24, 2006 | 06:59 PM
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What kind of dyno? I threw down nearly identical #'s with my mods minus the Borlas which added maybe, uh, 1 hp. This was on a Superflow dyno in the summer on a jungle hot day. You will get a huge range of numbers from differnent dynos. Hit the Dynojets for big #'s!
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Old Feb 24, 2006 | 07:08 PM
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it was a dyno jet [img]style_emoticons/<#EMO_DIR#>/banghead.gif[/img]
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Old Feb 24, 2006 | 07:16 PM
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Oops. [img]style_emoticons/<#EMO_DIR#>/sad.gif[/img]
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Old Feb 24, 2006 | 07:18 PM
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yea man...im so confused right now [img]style_emoticons/<#EMO_DIR#>/eek.gif[/img] [img]style_emoticons/<#EMO_DIR#>/headscratch.gif[/img] [img]style_emoticons/<#EMO_DIR#>/banghead.gif[/img]
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Old Feb 24, 2006 | 08:20 PM
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Can you post your Dyno Sheet? It may help to see what's going on...With that A/F ratio you have quite a bit of tuning work to do. IMO you could gain a good bit with a propper tune. Do you know what your timing was at WOT??
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Old Feb 24, 2006 | 08:35 PM
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yea ill get the dyno sheet for ya
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Old Feb 24, 2006 | 08:56 PM
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http://img240.imageshack.us/img240/7864/ye...sssssssssss.png

there it is [img]style_emoticons/<#EMO_DIR#>/smilies23.gif[/img]

let me get a better pic, cant really c that one [img]style_emoticons/<#EMO_DIR#>/banghead.gif[/img]

http://img64.imageshack.us/img64/5755/dynosheet3ce.png

there [img]style_emoticons/<#EMO_DIR#>/rolleyes.gif[/img]
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Old Feb 24, 2006 | 08:59 PM
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This is just my humble opinion and I'm no expert....I would have your tuner set your A/F ratio at 12.5 - 12.9 at WOT, that should gain you power right there. Do you know your total timing at WOT??? If not you can datalog it to find out. On a N/A car with your mod's I would advance it to about 28 - 30 degrees at WOT. [img]style_emoticons/<#EMO_DIR#>/thumb.gif[/img]
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Old Feb 24, 2006 | 09:01 PM
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well i asked them if they adjust it at their place and they said they dont, so i have to send my xcal back to my tuner? [img]style_emoticons/<#EMO_DIR#>/dunno.gif[/img]
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Old Feb 24, 2006 | 09:03 PM
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Send your dyno sheet with your SCT and find out your total degree's of timing and have him adjust it if necessary...There is more power in there.
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Old Feb 24, 2006 | 09:06 PM
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<div class='quotetop'>QUOTE(Vegasjay @ February 24, 2006, 10:06 PM) Quoted post</div><div class='quotemain'>
Send your dyno sheet with your SCT and find out your total degree's of timing and have him adjust it if necessary...There is more power in there.
[/b][/quote]

yep have the dyno sheet, and the xcal2 in the box ready to send to him, whenever he writes back [img]style_emoticons/<#EMO_DIR#>/headscratch.gif[/img]

hey how would i find out the total degree's of timing? [img]style_emoticons/<#EMO_DIR#>/dunno.gif[/img]
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Old Feb 24, 2006 | 09:32 PM
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<div class='quotetop'>QUOTE(Baginoman2 @ February 24, 2006, 8:09 PM) Quoted post</div><div class='quotemain'>
yep have the dyno sheet, and the xcal2 in the box ready to send to him, whenever he writes back [img]style_emoticons/<#EMO_DIR#>/headscratch.gif[/img]

hey how would i find out the total degree's of timing? [img]style_emoticons/<#EMO_DIR#>/dunno.gif[/img]
[/b][/quote]

Do a search on "Data-logging" . I haven't done it yet on my SCT 2...I used to do it on my Predator all the time. I know it can be done, you might want to check out the manual and do a search on here. [img]style_emoticons/<#EMO_DIR#>/thumb.gif[/img]
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Old Feb 25, 2006 | 10:04 AM
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found some topics on Data-logging..but nothings helping.. [img]style_emoticons/<#EMO_DIR#>/banghead.gif[/img]
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Old Feb 25, 2006 | 12:17 PM
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Thumbs up

<div class='quotetop'>QUOTE(Baginoman2 @ February 24, 2006, 5:50 PM) Quoted post</div><div class='quotemain'>
well i fnally got it dynoed, three runs, and well results werent what im looking for:

1st run was 262.4 hp 275.9 TQ

2nd run 263.6 hp 278.1 TQ

3rd run 263.7 hp 276.8 TQ

horrible, with the mods i have [img]style_emoticons/<#EMO_DIR#>/banghead.gif[/img] I should be at least around 280 hp!

My a/f ratio was about 10.2-10.4 [img]style_emoticons/<#EMO_DIR#>/icon24.gif[/img] [img]style_emoticons/<#EMO_DIR#>/icon24.gif[/img] [img]style_emoticons/<#EMO_DIR#>/icon24.gif[/img]

i need to call my tuner...im pissed [img]style_emoticons/<#EMO_DIR#>/banghead.gif[/img]

what do u guys think? SOmething wrong huh?
[/b][/quote]

Joe,

I noticed you have an automatic, and I didn't see this in the thread anywhere, so let me ask this: What gear did they do the dyno run in? When I first had mine dyno'ed, the shop was not aware that our cars have a 5-speed automatic, so they did the dyno pulls in 3rd gear. When I went back and had the runs done in 4th, the proper gear, it showed a marked increase. Your shop may not know which gear to dyno in.

Just a thought.

Eric
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Old Feb 25, 2006 | 12:19 PM
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<div class='quotetop'>QUOTE(BigWorm2005GT @ February 25, 2006, 1:20 PM) Quoted post</div><div class='quotemain'>
Joe,

I noticed you have an automatic, and I didn't see this in the thread anywhere, so let me ask this: What gear did they do the dyno run in? When I first had mine dyno'ed, the shop was not aware that our cars have a 5-speed automatic, so they did the dyno pulls in 3rd gear. When I went back and had the runs done in 4th, the proper gear, it showed a marked increase. Your shop may not know which gear to dyno in.

Just a thought.

Eric
[/b][/quote]

hmm i sure they knew it was an auto, i did not check what gear it was in.. [img]style_emoticons/<#EMO_DIR#>/headscratch.gif[/img]

man i need to fix this problem, cause im gettin stressed out [img]style_emoticons/<#EMO_DIR#>/nonono.gif[/img]
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Old Feb 25, 2006 | 12:26 PM
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<div class='quotetop'>QUOTE(Baginoman2 @ February 25, 2006, 11:22 AM) Quoted post</div><div class='quotemain'>
hmm i sure they knew it was an auto, i did not check what gear it was in.. [img]style_emoticons/<#EMO_DIR#>/headscratch.gif[/img]

man i need to fix this problem, cause im gettin stressed out [img]style_emoticons/<#EMO_DIR#>/nonono.gif[/img]
[/b][/quote]

[img]style_emoticons/<#EMO_DIR#>/04.gif[/img] I'm sure they noticed it was an auto, as well, but the Mustang model prior to ours with an automatic was a 4-speed auto, with 4th being the Overdrive gear, and 3rd as the 1:1 gear. On ours, 5th is the Overdrive gear, and 4th is the 1:1 gear, which is the right one to use for dyno-testing.

Just ask them which gear they used for dyno-testing and you'll have your answer. And, don't get too stressed about the numbers! Remember, what counts is that you have fun driving it! Numbers are just that... numbers. Speaking for myself, I get a lot bigger smile on my face mashing down on the "pedal on the right" than looking at a dyno chart.

Good luck! [img]style_emoticons/<#EMO_DIR#>/thumb.gif[/img]

Eric
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Old Feb 25, 2006 | 01:24 PM
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the huge fall in power and torque at 2750rpm shows one place where you could instantly gain 15+ in both categories by leveling out the A/F. that and leaning it out all the way through the rpms would make you much happier number-wise
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