Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

switching to OBDI & tunercat?

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Old

Aug 12, 2004 | 11:43 AM

#1

ss#1230

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Joined: Jun 2004

Posts: 840

From: bakersfield ca.

switching to OBDI & tunercat?

hey, can i simply buy a 95 or earlier PCM and then use tunercat for my car or is there some problems id run into?

i cant afford LT1 edit.....

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Old

Aug 12, 2004 | 09:22 PM

#2

PoorMan

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Joined: Feb 2002

Posts: 1,534

From: Lousiana

Re: switching to OBDI & tunercat?

You will only need to buy a 94-95 knock sensor that screws into the block. The 96+ have a different resistance.

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Old

Aug 13, 2004 | 12:28 AM

#3

ss#1230

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Registered User

Joined: Jun 2004

Posts: 840

From: bakersfield ca.

Re: switching to OBDI & tunercat?

hows the difference in sensativity? ive also got a LT4 KM in my PCM now. could i just change it to the OBDI pcm with no problems?

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Old

Aug 13, 2004 | 09:27 AM

#4

PoorMan

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Joined: Feb 2002

Posts: 1,534

From: Lousiana

Re: switching to OBDI & tunercat?

As far as OBD1-OBD2, the LT1 and LT4 knock modules are the same part number. The knock sensors are not. One reads in the 30 Ohm range and the other in the hundreds I believe.

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