Cobra ecu in Stock GT???

hollywoodstang

Active Member

May 23, 2006

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Apr 24, 2008

#1

• Apr 24, 2008

• #1

Can i use cobra computer in stock GT? i know cobra came with 24lbs injectors and GT came with 19lbs injectors?

Just wondering because on of my buddy needs 5 speed ecu and i happen to have cobra ecu i was going to use later on.

What would happen??? has anyone done this kind of thing before? Let me know.

Thanks

 

94-302-vert

Active Member

Aug 16, 2004

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NE CT

Apr 25, 2008

#2

• Apr 25, 2008

• #2

I beleive you need the 24#/hr injectors and not sure if the MAF is the same between cobra and GT... I think it is but I am not sure...

Make sure you add up the costs as you may be better off getting a TwEECer or similar to just tune the computer he has...

 

Stanger007

Founding Member

Sep 26, 2001

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Baton Rouge, LA

Apr 25, 2008

#3

• Apr 25, 2008

• #3

The MAF is the same, the injectors, however are not.

Unless he wants to jump to some 24# injectors, he would probably come out better getting it tuned or picking up a T4M0 PCM that would match the rest of the engine combo. I see one on eBay now for $50.

Wes

 

SVTtripleblack

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Dec 4, 2007

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Lancaster, PA

Apr 25, 2008

#4

• Apr 25, 2008

• #4

Like said before, the MAF's are the same on the gt and Cobra. The pcm makes up for the difference between the 19 and 24# injectors. You would at least need to get 24# injectors. Even then I'm not so sure it would run o.k. because all of the differences in the flow rates of the intake, heads, and cam. You would be better off finding a gt spec pcm. They are on Ebay and Craig's list all the time. If you wanted to upgrade injectors you still could, but you would need a MAF calibrated for them. Good luck

 

hollywoodstang

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May 23, 2006

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Apr 25, 2008

#5

• Apr 25, 2008

• #5

He has cobra intake and after market MAF, 24 injectors, E303 cam, B351 roller rockers.

Except for the stock e7's, So it can work right? without causing any problems? he needs to get the car run right now that's why i am asking.

Thanks

 

Stanger007

Founding Member

Sep 26, 2001

2,015

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Baton Rouge, LA

Apr 26, 2008

#6

• Apr 26, 2008

• #6

hollywoodstang said:

He has cobra intake and after market MAF, 24 injectors, E303 cam, B351 roller rockers.

Click to expand...

Knowing that changes the game quite a bit.

To make the J4J1 work he will likely have to go back to a stock MAF. What brand MAF does he have and what is it calibrated for?

Wes

 

hollywoodstang

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May 23, 2006

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Apr 26, 2008

#7

• Apr 26, 2008

• #7

he has c&l 76mm maf, I searched on their site and it says it works with stock 19lbs gt and 24lbs cobra. so i don't think i have to change it. what do you think?

Thanks

 

Stanger007

Founding Member

Sep 26, 2001

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Baton Rouge, LA

Apr 26, 2008

#8

• Apr 26, 2008

• #8

Was his car running previously with the 24# injectors on a 19# injector PCM?

Notice that there is the .650 tube and the Black tube for the C&L: http://www.cnlperformance.com/calibration.html

You can always look on the backside of the tube or get micrometers out and measure the tube to figure out which one he has.

Wes

 

hollywoodstang

Active Member

May 23, 2006

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Apr 26, 2008

#9

• Apr 26, 2008

• #9

believe it or not he was running on stock automatic computer with 24 lbs injectors. What a moron... and he wonders why his car doesn't run right... "Yes" we got the black tube also.

 

hollywoodstang

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May 23, 2006

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Apr 26, 2008

#10

• Apr 26, 2008

• #10

<table border="0" cellpadding="2" cellspacing="2" width="350"><tbody><tr bgcolor="#003399"><td colspan="2" align="left" valign="bottom">[FONT=verdana,arial,helvetica]1994-1995 Mustang 5.0, 76mm Unit[/FONT]</td></tr> <tr bgcolor="#cccccc"><td align="left" valign="top">[FONT=Arial,Helvetica]Stock Injectors GT & Cobra[/FONT]</td> <td align="left" valign="top">[FONT=Arial,Helvetica].650 Tube (094)[/FONT]</td></tr></tbody></table>

 

hollywoodstang

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May 23, 2006

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Apr 26, 2008

#11

• Apr 26, 2008

• #11

we currently have this in there

 

SVTtripleblack

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Dec 4, 2007

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Lancaster, PA

Apr 27, 2008

#12

• Apr 27, 2008

• #12

I guess it wouldn't hurt to try the j4j1, but I'm still not too sure it would run right with the e7 heads. Heads are really what makes the engine. The air flow differences between the two heads aren't vast, but they are significantly different. I don't know if the Cobra pcm can learn around this?

 

Stanger007

Founding Member

Sep 26, 2001

2,015

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Baton Rouge, LA

Apr 27, 2008

#13

• Apr 27, 2008

• #13

To run the J4J1 in his car w/ the C&L MAF he will need to run the .650 tube. The black tube will make his car run about 20% lean.

Wes