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3.8 to 4.6 swap help

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Old 07-17-2014, 10:53 AM   #1
sterlingmike302
 
Join Date: Jul 2014
Vehicle: 2002 ford mustang conv
Location: michigan
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Default 3.8 to 4.6 swap help

hello,i have a 02 convertible and im going to do the 4.6 swap.i have the engine and harness already.what i need to know is when i go get my pcm for the v8 will it affect my sec key in my car?and if so whats the best way to get aroumd that.also does it matter if in get a pcm out of a hard top or does it half to be a convertible?also any helpfull advice would be great.my goal is twin turbo 4.6 by next spring.thanks for the help.
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Old 07-17-2014, 12:14 PM   #2
dawson1112
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You know Im pretty sure that the pats key information is stored in the pcm. So any change would require reprogramming of the pcm to that key.

As far as the hard top vs convert, I think the pcm is different because there are some sensors for the top. I think any ways.
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Old 07-17-2014, 12:46 PM   #3
sterlingmike302
 
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the only sesor that i know of for the top is on the E-break.because inorder to lower/raise the top the E-break has to be on.other than that i dont think theres sensors.but i could be wrong.and as far as the pats code i dont know if its in the bck like chevy does or the pcm.and if i get it flashed i lose the 4.6 programing unless they can only do the key programing.
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Old 07-18-2014, 05:32 AM   #4
dawson1112
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There are five types of PATS implementations from Ford (A, B, C, D, E).PATS initialization is generally performed after programming.
The A or D version of PATS does not store the key information in the PCM, therefore NO PATS KEY RELEARN IS REQUIRED after programming.
The B or C versions of PATS store the key information within the PCM and MUST be transferred to the new PCM, or relearned on the vehicle after the new PCM is installed.
The E version of PATS also stores the key information within the PCM, but CANNOT be transferred to the new PCM. This type MUST be relearned on the vehicle after the new PCM is installed.

99-04 use pats version C and must be transferred to a new pcm.... The key transfer to a new pcm will not over rite any engine management software. The key data is just a stored code on the pcm and can be done with a tech II at the dealer.
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