• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

Dyno Tuned yesterday...... something isnt right..... 404hp 396tq??

  • Thread starter Thread starter 95CobraMike
  • Start date Start date Apr 20, 2006
Prev
  • 1
  • 2
  • 3
Next
First Prev 2 of 3 Next Last

95CobraMike

Active Member
Apr 12, 2004
1,046
0
36
Lima OH
Apr 20, 2006
#21
  • Apr 20, 2006
  • #21
Here is how the dyno session went....

232 hp 314tq 5.5lbs of boost
292hp 346 tq 6.5 lbs
308hp 356 tq 7.7lbs
337hp 392tq 8.2 lbs (started introducing meth)
374hp 400tq 8.5lbs
384hp 398tq 10.2lbs
404hp 396tq 10.9lbs
 

95CobraMike

Active Member
Apr 12, 2004
1,046
0
36
Lima OH
Apr 20, 2006
#22
  • Apr 20, 2006
  • #22
eades, not sure on the fuel pumps, will check them out this weekend....
FP is just plain F'ed....
 

final5-0

Mustang Master
Apr 6, 2003
6,817
12
79
DFW Texas
Apr 20, 2006
#23
  • Apr 20, 2006
  • #23
95CobraMike said:
Grady, you're the man.... are most AF ratio graphs measured out in .2 increments?
Click to expand...

No Mike

You usually don't see the af ratio displayed like that. Nothing wrong with it ... just different. It really does give you more accurate data and that is always a good thing.

From 3500 to 4250 it looks like the avg would be about 13.0
It then slowly falls to as low as about 12.2 at about 5200
It then rises a bit at the end of the pull

The ratio does rise and fall somewhat but you are looking at a total range of only about 8/10 of one point where I focused the discussion to in this post.

For the most part however, I do think that is too lean for a blown combo myself.

Like eades5.0 and others said, I'd be looking at making things fatter.

Grady
 

95cobraguy

Member
Dec 23, 2005
637
11
19
Concord, NC by way of LI, NY
Apr 20, 2006
#24
  • Apr 20, 2006
  • #24
if u have a chip now controlling the timing then its time to put the msd btm in the classifieds. are u running any type of ignition system at all? not that i'm saying that is going to fix your problems but it might clear up some of your low rpm miss. and like others have said that a/f curve looks like a disaster waiting to happen. as far as your fuel situation, what was the pressure doing at the top of the run? if pressure is falling off up top then your having a fuel delivery problem. aside from the injectors what else is comprised in the fuel system (pumps, lines, etc.)
 

95CobraMike

Active Member
Apr 12, 2004
1,046
0
36
Lima OH
Apr 20, 2006
#25
  • Apr 20, 2006
  • #25
As far as what is my fuel pressure doing at the top of my run, i dont know my gauge is under my hood..... (going to change very soon thanks chris)
pumps, i am not sure will take my tank off and let you all know this weekend
lines i am assuming are stock
ignition = msd 6al btm newer cap and FMS wires, new autolite 3923 plugs gapped to .030
 

94GTLaserRC

Squint as you approach, lest you be blinded by my
15 Year Member
May 7, 2002
11,178
13
89
Ernan Says "here it comes... dushbag"
Apr 21, 2006
#26
  • Apr 21, 2006
  • #26
eades5.0 said:
I cant belive he let you leave with your A/F looking like that, I would NOT get on that car at all your a/f is scary.
The reason your makin s h i t for power is because that is a s h i t tune.
Your a/f should be steady not all over the board, you have a fuel issue goin on somewhere big time!
As soon as you seen your FP was f u c k e d you shoulda stoped, lucky you didnt pop a headgasket with that a/f
Figure your fuel problem out and go back.
Click to expand...

Go Eades!!!
 
G

Green 94 5.0

Founding Member
Mar 25, 2002
2,601
12
79
Ft. Lauderdale, FL
Apr 21, 2006
#27
  • Apr 21, 2006
  • #27
eades5.0 said:
Maybe you have a dead fuel pump?
What fuel pumps are you running?

You have plenty inj for your combo, PLUS methanol so obviously something in your fuel sys else where needs atten
Click to expand...
i was thinking the same thing. the fuel pump could be on its way out. you said you arent sure on the pump. does that mean you could possibly be running the stocker? if so, that could definitely be the reason for your fuel pressure issue. the stocker isnt capable of flowing what the 42's require. you should have a 255lph pump in there right now at the very least. do you have the t-rex inline pump installed?
 
G

Green 94 5.0

Founding Member
Mar 25, 2002
2,601
12
79
Ft. Lauderdale, FL
Apr 21, 2006
#28
  • Apr 21, 2006
  • #28
eades5.0 said:
I cant belive he let you leave with your A/F looking like that, I would NOT get on that car at all your a/f is scary.
The reason your makin s h i t for power is because that is a s h i t tune.
Your a/f should be steady not all over the board, you have a fuel issue goin on somewhere big time!
As soon as you seen your FP was f u c k e d you shoulda stoped, lucky you didnt pop a headgasket with that a/f
Figure your fuel problem out and go back.
Click to expand...
chris, you have a way with words like no other on this board.
 

4Jenna

Founding Member
Sep 12, 2001
4,326
6
69
AZ
Apr 21, 2006
#29
  • Apr 21, 2006
  • #29
Holla
 

BlueOvalStangGT

Active Member
Oct 27, 2003
2,849
0
46
Tampa Florida....USF!!!
Apr 21, 2006
#30
  • Apr 21, 2006
  • #30
Are you sure your belt is tight? When I had the vortech on, I had no problem making 13-14 psi with the stock pulleys.
 

YEAHLOH95

Founding Member
Nov 19, 2001
1,249
3
39
EVERETT,PA
Apr 21, 2006
#31
  • Apr 21, 2006
  • #31
you need to check that intank pump or replace it while you are in there
 

95CobraMike

Active Member
Apr 12, 2004
1,046
0
36
Lima OH
Apr 21, 2006
#32
  • Apr 21, 2006
  • #32
fuel pump is going to be the first thing i check along with a t-rex.....

yeah my belt was definatly tight.... we tightedned it on the dyno i have ported tw heads could be the reason for not as much psi??

it would suprise me if it was the stock fuel pump... the guy who sold me the car told me he got all copper gaskets put on the car.......... and i found out first hand that was definatly not the case, along with many other things....
 

94gts

Member
Jul 4, 2004
873
0
16
Carmel, New York
Apr 21, 2006
#33
  • Apr 21, 2006
  • #33
95CobraMike said:
it would suprise me if it was the stock fuel pump... the guy who sold me the car told me he got all copper gaskets put on the car.......... and i found out first hand that was definatly not the case, along with many other things....
Click to expand...

dude, drop the tank NOW. its 3 bolts and takes like 10 minutes
 

Cobra4075

Founding Member
Feb 18, 2002
286
1
17
Tinley Park, IL
Apr 21, 2006
#34
  • Apr 21, 2006
  • #34
i called lidio and i think i am going to go back and see what we can do about my "missing" problem but as far as my a/f ratio and my poor numbers.... i dont know?[/QUOTE]

Mine did the same after I got my pro-m 75. I was told that it should be clocked differently. I went to DFI and never got a chance to try it.
 

95CobraMike

Active Member
Apr 12, 2004
1,046
0
36
Lima OH
Apr 22, 2006
#35
  • Apr 22, 2006
  • #35
dropping the tank today....

the miss was there a little bit before the tune, but the tune made it quite a bit worse
instead of "missing" once every 8-10 seconds now it "misses" once every 2-3 seconds
 

BlueOvalStangGT

Active Member
Oct 27, 2003
2,849
0
46
Tampa Florida....USF!!!
Apr 22, 2006
#36
  • Apr 22, 2006
  • #36
Do you have a check engine light or anything?
 

v6v8swap

Member
Mar 20, 2004
113
0
16
Oklahoma
Apr 22, 2006
#37
  • Apr 22, 2006
  • #37
I'm just going to throw out something that no one has said--and I really don't know what the answer is. How does the fuel pressure regulator work once it starts to get boost instead of vacuum? It's just something that could be causing a problem or maybe that situation is already worked out. I seriously don't know about these things--it's just something that I thought about while I was reading through this thread. Good Luck!!
 

final5-0

Mustang Master
Apr 6, 2003
6,817
12
79
DFW Texas
Apr 22, 2006
#38
  • Apr 22, 2006
  • #38
v6v8swap said:
I'm just going to throw out something that no one has said--and I really don't know what the answer is. How does the fuel pressure regulator work once it starts to get boost instead of vacuum? It's just something that could be causing a problem or maybe that situation is already worked out. I seriously don't know about these things--it's just something that I thought about while I was reading through this thread. Good Luck!!
Click to expand...

one additional pound of pressure
FOR
each pound of boost

Grady
 

95CobraMike

Active Member
Apr 12, 2004
1,046
0
36
Lima OH
Apr 22, 2006
#39
  • Apr 22, 2006
  • #39
i dont have any check engine light, so thats probably a good thing...

as far as my AFPR it is a Kirban, does anyone know if the kirban is a 1:1 regulator?
 

final5-0

Mustang Master
Apr 6, 2003
6,817
12
79
DFW Texas
Apr 22, 2006
#40
  • Apr 22, 2006
  • #40
95CobraMike said:
i dont have any check engine light, so thats probably a good thing...

as far as my AFPR it is a Kirban, does anyone know if the kirban is a 1:1 regulator?
Click to expand...

I thought all regulators were 1 to 1

Excluding fmu's of course

Grady
 
Prev
  • 1
  • 2
  • 3
Next
First Prev 2 of 3 Next Last
You must log in or register to reply here.

Similar threads

Dyno Tuned yesterday...... something isnt right..... 404hp 396tq??
  • 95CobraMike
  • Apr 20, 2006
  • 1994 - 1995 Specific Tech
Replies
19
Views
1K
1994 - 1995 Specific Tech May 7, 2006
R.A.T.M.
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?