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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

questions on tunning 94-95 gt ecu

  • Thread starter Thread starter BK_CAULEY
  • Start date Start date Feb 3, 2009

BK_CAULEY

it's built for speed not longevity, woman
Dec 26, 2006
0
10
49
Thomasville, ga
Feb 3, 2009
#1
  • Feb 3, 2009
  • #1
I heard some one talkng at a local shop and they where trying to convert there car to run with a fox computer. can anyone explain the reasoning behind this? i thought they where basically the same. he was sporting twins if that makes a difference.
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Feb 4, 2009
#2
  • Feb 4, 2009
  • #2
Do a search for PIH swap. The Fox III EEC's are less finicky than the load-based 94-95 EEC's.
 

Chythar

Recently finished repairing my rear
20+ Year Stangneter
Aug 26, 2004
2,373
140
113
Foothill Ranch, CA
Feb 4, 2009
#3
  • Feb 4, 2009
  • #3
The fox computers can handle engine mods better than the 94-95 PCM. Some find that easier than tuning the PCM, it kinda depends on your opinion. IMO, by the time you learn how to convert the wiring harness over and change the sensors around, you've done so much work it would have been cheaper to learn how to tune the 94-95 PCM yourself. And then you're stuck with an older computer and older tech, and you might STILL have to chip the computer anyway.

I'm of the opposite opinion, I have a chip in my PCM and I'm learning how to tune my GT myself.
 

final5-0

Mustang Master
Apr 6, 2003
6,817
12
79
DFW Texas
Feb 4, 2009
#4
  • Feb 4, 2009
  • #4
A few things to think about

To retrofit the older pcm

1) You need an aftermarket ignition
2) IIRC ... The fan then is no longer controlled by the pcm
3) You need a harness
or
You gotta figure how to pin out your original harness
4) You gotta find a Fox pcm or the kit

Might be more stuff still ... but that is all I can think of for now

At this point in time ... Yes ... That pcm works better with mods
but
It has not been optimized in any way and is still OEM or Stock

It always boils down to application

If you are gonna go pretty far with the mods .....

Even the ... Almighty A9L ... Works better optimized :Word:

Many have done the retrofit and are happy

You just gotta add up how much it costs to go down each road
and see which is better for you

Grady
 

rio95

Member
Nov 18, 2003
829
1
17
Grand Rapids, MI
Feb 7, 2009
#5
  • Feb 7, 2009
  • #5
Call up Pro Mass Air Systems. I talked to them a few years ago and they had a kit that controls the fan and whatnot. Around $350 I think.

From what I have researched the A9L's are a TON better than our computers. So many fox's are running some nice setups without even a chip or other tuning. There is no way we can get away with things like that. Talk to most tuners and they'll tell you that SN95 can be a pain in the rear.
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Feb 8, 2009
#6
  • Feb 8, 2009
  • #6
Mr Grady summed it up well. We can really think of it almost analogous to going from EFI to a carb. The carb is deemed to be simpler and can make a ton of WOT power, but it can be far from optimal in all driving conditions.

If a stang is modded enough to need an A9* EEC, it probably would really benefit from a tune anyhow. Why not keep the superior SN95 processor (it is a better processor, hardware-wise).

Unless a swap kit is free, that money could be spent on tuning the SN EEC (even if someone wants to just have a chip burned that mimics an A9L).
 
9

91gt331

New Member
Sep 29, 2005
2
0
1
maryland
Apr 27, 2009
#7
  • Apr 27, 2009
  • #7
Im in a similar situation. Just bought a 95 thats bone stock except coil overs,and exhaust. I have a "spare" fox I was planning on swapping everything out of. I would like to keep the 95 computer,but I change setups quite a bit. I dont want to have to get a new chip burned everytime I want to change something. Does Pro Mass Air still make that kit ? My brother has it in his 95 GTS. I havent been able to find it since they were called Pro-M. If they have it,thats what I want to do.
 

BlownFiveLiter

have car, will race....wait, it doesn't run
15 Year Member
Nov 29, 1999
3,133
18
108
Chicagoland
Apr 27, 2009
#8
  • Apr 27, 2009
  • #8
91gt331 said:
Im in a similar situation. Just bought a 95 thats bone stock except coil overs,and exhaust. I have a "spare" fox I was planning on swapping everything out of. I would like to keep the 95 computer,but I change setups quite a bit. I dont want to have to get a new chip burned everytime I want to change something. Does Pro Mass Air still make that kit ? My brother has it in his 95 GTS. I havent been able to find it since they were called Pro-M. If they have it,thats what I want to do.
Click to expand...

For the cost, you can have a Moates Quarterhorse and change it whenever you'd like, yourself. The learning part is free and there's quite a few that can help with whatever you'd need to know.
 
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