4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

97 cobra motor in 00 GT body.

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Old 11-05-2009, 01:03 AM
  #61  
Jsmith309
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And btw. It's not dumb if it works
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Old 11-05-2009, 01:07 AM
  #62  
Sxynerd
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Originally Posted by Jsmith309
My ignition is fine, my computer was tuned to 30Lb an hour injectors with the 2v in and the brian crower cams. As u probably already know cobras have 24lb an hour FI's. My autometer A/F guage reads lean most of the time at idle. when i have it full throttle it reads rich as we should expect. I'll see if i can get my 30 pound injectors back, it's either that or a vacuum leak somewhere. It might also be due to an inactive egr.

I only have one clip not hooked up, and it's the sensor on top of the Fuel pressure regualtor.
A faulty EGR isn't going to cause it to shut off. I didn't realize you have cams but it should still stay running. Which Crower cams do you have?
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Old 11-05-2009, 01:13 AM
  #63  
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Originally Posted by sxynerd
A faulty EGR isn't going to cause it to shut off. I didn't realize you have cams but it should still stay running. Which Crower cams do you have?
Stage 3's 272 lift? but those were in the 2V motor (which is forsale BTW)
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Old 11-05-2009, 02:01 AM
  #64  
JC316
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Originally Posted by sxynerd
I wasn't going to help cause you're such a **** but whatever.

The first problem is I'm sure you used the 4v injectors. Put your 2v injectors back in and make sure you're using your maf and not the 4v maf (If you are).

Buy the boots for the 4v and swap out that stupid wiring crap you did. That's the dumbest thing I've ever seen a mustang person do. Or you can switch to GM LS1 packs but that's not cheap and since you already have your coils just use those.

Lets get some closer pictures of everything you have connected.
The injectors have the same part number for the GT and the Cobra, so I don't see how that will affect it. The MAF for sure will goof things up.

Originally Posted by sxynerd
A faulty EGR isn't going to cause it to shut off. I didn't realize you have cams but it should still stay running. Which Crower cams do you have?
The EGR may not cause it, but it certainly won't help it. It can screw up the O2 sensor readings and cause more fuel to be dumped in.

As to the original poster, have you gotten an intake tube yet? I know that mine ran like crap with out it.
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Old 11-05-2009, 10:15 AM
  #65  
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Originally Posted by JC316
The injectors have the same part number for the GT and the Cobra, so I don't see how that will affect it. The MAF for sure will goof things up.



The EGR may not cause it, but it certainly won't help it. It can screw up the O2 sensor readings and cause more fuel to be dumped in.

As to the original poster, have you gotten an intake tube yet? I know that mine ran like crap with out it.
Im using my K&n with a couplerW/ reducer. it seems to work ok. I had Bigger red injectors with the old motor. I know they're different.
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Old 11-05-2009, 10:34 AM
  #66  
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With the tune expecting different injectors that is a huge issue. Or you could always tune for the injectors that you have now but that seems fruitless since they are maxed out of peak operating range with just a few mods. If you can get the injectors back I'd say do that. Do you have a wideband?
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Old 11-05-2009, 10:41 AM
  #67  
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Originally Posted by sxynerd
With the tune expecting different injectors that is a huge issue. Or you could always tune for the injectors that you have now but that seems fruitless since they are maxed out of peak operating range with just a few mods. If you can get the injectors back I'd say do that. Do you have a wideband?
Just an autometer a/f gauge. thats it. i'm about to buy a sct xcalibrator 1 today.
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Old 11-15-2009, 02:02 AM
  #68  
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I did a 99 cobra motor in my 01 GT last month got it done over the course of three days.

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Old 11-15-2009, 03:12 PM
  #69  
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Originally Posted by A320PYLT
I did a 99 cobra motor in my 01 GT last month got it done over the course of three days.

A320PYLT
Nice. Do u like it? Mine runs fine now, i just changed the injectors.
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Old 11-19-2009, 12:38 PM
  #70  
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