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NPI dyno numbers!!!

  • Thread starter Thread starter 98COBRA281
  • Start date Start date May 31, 2008
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98COBRA281

10 Year Member
Nov 24, 2007
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Port St. Lucie, Florida
May 31, 2008
#1
  • May 31, 2008
  • #1
i hoped she would have been a little better. but she put down 225.5rwhp, and 270.2 rwtq my af ratio was good, between 4000-5600 rpms it was between 11.5-11.8

 

CobraRed_96_GT

Active Member
May 20, 2006
1,421
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39
UCSD/La Jolla
May 31, 2008
#2
  • May 31, 2008
  • #2
Shouldn't your a/f be around 12.9?
 

98COBRA281

10 Year Member
Nov 24, 2007
1,348
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59
Port St. Lucie, Florida
May 31, 2008
#3
  • May 31, 2008
  • #3
CobraRed_96_GT said:
Shouldn't your a/f be around 12.9?
Click to expand...

not sure, but he said it was good
 

CobraRed_96_GT

Active Member
May 20, 2006
1,421
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May 31, 2008
#4
  • May 31, 2008
  • #4
Low/mid 11's is boosted a/f territory. 12.8-13.1 is where you want to be unless im mistaken
 

02nightmaregt

To hell with your Mustang, I want to see your HOG!
Jul 1, 2007
513
4
19
Southern Indiana
May 31, 2008
#5
  • May 31, 2008
  • #5
Damn i thought it would be quite a bit higher than that. Just a reason to keep modding
 

d98gt

Founding Member
Mar 14, 2002
4,505
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204
SE Texas
May 31, 2008
#6
  • May 31, 2008
  • #6
That sure is a low number for a car with cobra badges
 

Tim2002GT

Founding Member
Apr 10, 2002
635
4
29
Tulsa, Oklahoma
May 31, 2008
#7
  • May 31, 2008
  • #7
I would think you could pull a little higher #'s if you leaned it up a bit. Good numbers regardless!
 

98COBRA281

10 Year Member
Nov 24, 2007
1,348
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Port St. Lucie, Florida
May 31, 2008
#8
  • May 31, 2008
  • #8
yeah i though it would be a little higher than that.. making it leaner will make more power?
 

98COBRA281

10 Year Member
Nov 24, 2007
1,348
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Port St. Lucie, Florida
May 31, 2008
#9
  • May 31, 2008
  • #9
02nightmaregt said:
Damn i thought it would be quite a bit higher than that. Just a reason to keep modding
Click to expand...

yeah P&P pi heads, cams and long tubes
 

98COBRA281

10 Year Member
Nov 24, 2007
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Port St. Lucie, Florida
May 31, 2008
#10
  • May 31, 2008
  • #10
 

mustangman9812

10 Year Member
Jan 14, 2004
661
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Mars Hill, NC
May 31, 2008
#11
  • May 31, 2008
  • #11
If you hade Longtube it would have been better. L/T's = Next Mod
 

Winters98GT

Whoop...whoop-whoop-whoop-whoop...GANGNAM STYLE!!!
Founding Member
Nov 29, 1999
5,520
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H Town
May 31, 2008
#12
  • May 31, 2008
  • #12
Good deal man. Glad you got some numbers.

youll proboly gain 5rwhp with longtubes.
 

98COBRA281

10 Year Member
Nov 24, 2007
1,348
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Port St. Lucie, Florida
May 31, 2008
#13
  • May 31, 2008
  • #13
it makes me want to do pi head swap so bad
 

LI98GTStang

Founding Member
Jun 22, 2000
1,715
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36
L.I., NY
May 31, 2008
#14
  • May 31, 2008
  • #14
98COBRA281 said:
it makes me want to do pi head swap so bad
Click to expand...

Those are decent numbers. That is right in the area where stock 99+ runs and you don't have the heads themselves. Mine put down 229rwhp with your mods minus the T/A, no-cats and tb/plenum so we're in the ballpark but we can't compare directly different dynos. I've also toyed with picking up come heads as well, but with only ~10rwhp gain, the amout of work, and the need for higher and more expensive octane keeps me way. I would only do heads if cams were part of the equasion.

How does it feel/drive to you? Been to the track?
 

bhuff30

Founding Member
Dec 11, 2001
6,037
35
129
Olathe KS
May 31, 2008
#15
  • May 31, 2008
  • #15
I'm sure you have at least 10hp by getting the AF where it should be. That's fine for boosted car, but doesn't make good power on an NA engine.

Seems to me, when you increase the airflow beyond what a stock engines would move, the computer compensates by making it extra rich. Adds a margine of saftey to ford and those who modify their engines I suppose.
 

98COBRA281

10 Year Member
Nov 24, 2007
1,348
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59
Port St. Lucie, Florida
May 31, 2008
#16
  • May 31, 2008
  • #16
LI98GTStang said:
Those are decent numbers. That is right in the area where stock 99+ runs and you don't have the heads themselves. Mine put down 229rwhp with your mods minus the T/A, no-cats and tb/plenum so we're in the ballpark but we can't compare directly different dynos. I've also toyed with picking up come heads as well, but with only ~10rwhp gain, the amout of work, and the need for higher and more expensive octane keeps me way. I would only do heads if cams were part of the equasion.

How does it feel/drive to you? Been to the track?
Click to expand...

yeah those are the SAE #'s, when he put the weather correction on it went to 230hp, 274tq, the car runs great and strong, feels like it has more the 225hp , but the dyno dosent lie!! no i have not been to the track.. i see you ran a 13.7, thats rely good, i would love to break into the 13's, even with a 13.999
 

96GT281

New Member
Apr 12, 2008
0
0
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Stuart, Fl
May 31, 2008
#17
  • May 31, 2008
  • #17
i dont even want to bring my car to the dyno. 193/240 ill probly get out of it
 

CobraRed_96_GT

Active Member
May 20, 2006
1,421
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UCSD/La Jolla
May 31, 2008
#18
  • May 31, 2008
  • #18
98COBRA281 said:
yeah those are the SAE #'s, when he put the weather correction on it went to 230hp, 274tq, the car runs great and strong, feels like it has more the 225hp , but the dyno dosent lie!! no i have not been to the track.. i see you ran a 13.7, thats rely good, i would love to break into the 13's, even with a 13.999
Click to expand...
You'll get there, i got a 13.97 with NPI heads and cams
 

hotmustang331

Active Member
Apr 29, 2004
2,967
3
48
Bastrop,TX
Jun 1, 2008
#19
  • Jun 1, 2008
  • #19
Yep your car is running VERY rich. Needs be leaned out alot. Really you want to be running around 13.5 A/F at the rear tailpipe....maybe a bit leaner. You would probably make 235-240 by leaning the thing out.
Great job none the less!
 

LaserSVT

Got FB banned again for saying nards
Founding Member
Nov 29, 1999
9,389
3,536
233
Jun 1, 2008
#20
  • Jun 1, 2008
  • #20
Good job buddy And I agree with everyone that a little less fuel and youd see another 5-10 hp Bet that thing gives a nice pop under a heavy load between shifts
 
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