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  • 1996 - 2004 SN95 Mustang -General/Talk-
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99 cobra dyno'd low

  • Thread starter Thread starter vennom
  • Start date Start date Apr 4, 2004
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COBRA90GT

Mustang Master
Sep 22, 2001
6,654
0
87
HOCKEYTOWN ® , MI
Apr 7, 2004
#21
  • Apr 7, 2004
  • #21
vennom said:
i checked my airfilter and it was really bad, im just about to check the plugs, the car only has 25,000 miles. Im not sure what else it could be?
Click to expand...

Well, that's a good start. Dirty air filter = restriction. How are those plugs looking?
 
V

vennom

New Member
Apr 1, 2003
111
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0
Apr 7, 2004
#22
  • Apr 7, 2004
  • #22
the plugs looked fine in my opinion a little white. but deff not oily or anything. Anouther thing is that the run was made in 3rd gear could that have, made a difference?
 
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vennom

New Member
Apr 1, 2003
111
0
0
Apr 7, 2004
#23
  • Apr 7, 2004
  • #23
that would also explain why the best i can run is a 13.97@106.7 and a 5.47 0-60 on a g-tech
 

COBRA90GT

Mustang Master
Sep 22, 2001
6,654
0
87
HOCKEYTOWN ® , MI
Apr 8, 2004
#24
  • Apr 8, 2004
  • #24
vennom said:
...Anouther thing is that the run was made in 3rd gear could that have, made a difference? ...
Click to expand...


Bingo. That's your problem.

You need to have a "1:1" ratio, or be in 4th gear with your transmission in order to get "legit" dyno results. I'm sure your car is making adequate power. The next time you put it on the dyno, I'm sure you will see better numbers, because of the incorrect testing conditions from your prior dyno...

See here (TXSnakecharmers's site):

http://www.shane.roberts.net/99dyno.htm
 

sprayinsnake96

New Member
Mar 17, 2004
23
0
0
Apr 13, 2004
#25
  • Apr 13, 2004
  • #25
hey venom this might be a little late but ive worked with the dynojets quite alot ur lines on ur dyno sheet are wavy wich tends to tell u something is wrong with ur air or fuel delivery definetely one of the two i hope i was a help other than that keep at it.
 
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Warcat

New Member
Dec 23, 2005
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Dec 23, 2005
#26
  • Dec 23, 2005
  • #26
What Was The Outcome?

I know this was a really old thread, but I'm wondering if my '99 Cobra has similar problems...or is the same one! I just bought it about 2 months ago with around 26k miles on it. My best 1/4 time on a G-Timer is 14.15 @ 104.

Venom,
If you're still around, what was the problem?
And if he's not around anymore, does anyone have any suggestions to lower my time?

1999 Cobra SVT
4.10 gears, K & N Cold Air Intake, Ford Motorsports Pulleys, Steeda springs,
X-pipe exhaust w/ Magnaflows, Tri-ax short throw shifter, Chrome Cobra-R wheels,
Tires: Nitto NT Extreme 555ZR- 265/35/ZR18 in front, 285/35/ZR18 in back.
 

DirtySanchez

Founding Member
Apr 18, 2002
331
0
0
Atlanta, GA
Jan 2, 2006
#27
  • Jan 2, 2006
  • #27
Warcat said:
My best 1/4 time on a G-Timer is 14.15 @ 104.
Click to expand...

That sounds about right. My old 99 made a little over 300 at the wheels and trapped around 105.
 
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