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  • 1996 - 2004 SN95 Mustang -General/Talk-

What is this?

  • Thread starter Thread starter 2006KJ
  • Start date Start date Apr 2, 2010

2006KJ

New Member
Mar 29, 2010
128
0
0
North West PA
Apr 2, 2010
#1
  • Apr 2, 2010
  • #1
Bought the car used and this was in it.. it says EMS on it with a dial that can be turned from 0 - 1 -2 - 3 - 4 - 5 - 6 - 7. then back to 1 in a circle... and either direction. the previous owner said it was in there when he got it and only knows it as a 'performance chip'. if you turn it too far one way it kills the car... if you turn it too far the other way it kills the car. This leads me to believe it advanced/retards the spark or fuel.

1. what is it.
2. What does it do
3. how do i tune it in (besides what makes the car 'feel' and 'sound' best)
4. any other info you can give about it would be great!

here are 2 pictures


 

393strokervert

Member
Jun 12, 2009
340
0
17
florida
Apr 2, 2010
#2
  • Apr 2, 2010
  • #2
EMS is going to stand for Engine Management System. It is a AEM product I believe. here is a link to their site AEM Engine Management - Series 2 EMS, Plug and Play Engine Management, AEM F/IC
try to find where the wires from that switch are going & see what the box looks like, you should be able to get a model# off of the box ,look the model# up on the AEM site to get some more info on it.
 
D

Deleted member 38176

Apr 2, 2010
#3
  • Apr 2, 2010
  • #3
Mustang Coin Holder Bezel for SCT Eliminator 4-Bank Chip at AmericanMuscle.com
 

2006KJ

New Member
Mar 29, 2010
128
0
0
North West PA
Apr 3, 2010
#4
  • Apr 3, 2010
  • #4
Nightfire said:
Mustang Coin Holder Bezel for SCT Eliminator 4-Bank Chip at AmericanMuscle.com
Click to expand...

i think it is that... i took off my passenger kick panel and the stock computer is in there with a wire going to the controller in the console. I thought it might have been an air fuel ratio or spark adjuster because the car wasnt running right. Today a changed all the spark plugs, boots, wires, and coil packs... now it runs like the wind (107,000 miles with original plugs, coil packs, boots..) next to go is the original fuel filter. Found all 8 coil packs at summit for under $200! great deal. i believe they are accel (bright yellow).

so i figure my EMS thing has 3 tunes loaded in it.. because if its on a number that doesnt have a tune it shuts off. it shuts off on 0 and 4 so 1,2,and 3 should all have tunes. now only if i knew what the 'tunes' were for.
 

sneaky98gt

10 Year Member
Apr 23, 2008
2,387
144
114
NC State University
Apr 3, 2010
#5
  • Apr 3, 2010
  • #5
2006KJ said:
i think it is that... i took off my passenger kick panel and the stock computer is in there with a wire going to the controller in the console. I thought it might have been an air fuel ratio or spark adjuster because the car wasnt running right. Today a changed all the spark plugs, boots, wires, and coil packs... now it runs like the wind (107,000 miles with original plugs, coil packs, boots..) next to go is the original fuel filter. Found all 8 coil packs at summit for under $200! great deal. i believe they are accel (bright yellow).

so i figure my EMS thing has 3 tunes loaded in it.. because if its on a number that doesnt have a tune it shuts off. it shuts off on 0 and 4 so 1,2,and 3 should all have tunes. now only if i knew what the 'tunes' were for.
Click to expand...

I can't say for sure, but I have a feeling that they are for different octane ratings. As in 87, 91, 93 octane tunes (or 87, 89, 91 depending on where you live).

Do you get any pinging with any particular setting? And if so, what octane are you running?
 

2006KJ

New Member
Mar 29, 2010
128
0
0
North West PA
Apr 3, 2010
#6
  • Apr 3, 2010
  • #6
havnt gotten any pinging at all.. but still really haven't used the car much. still getting it back on the road. I have it on the number 1 setting now and using whatever gas is in the car when i bought it. When i can drive the car more i'll play with setting 2 and 3 and see if it makes any difference performance wise. sure is interesting.
 
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