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Old 03-22-2010, 04:12 PM
John in RI John in RI is offline
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Talking LT4 Knock module --------->

Anyone here ever install a LT4 knock module onto their LT1 PCM ??? Just checking to see what opinions you guys might have on the subject. I picked one up for my Z because I've read they are a good idea on an LT1 when headers &/or Roller Rockers are installed because they are less sensitive than the stock LT1 modules.

All input welcome !

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Old 03-22-2010, 04:25 PM
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ILuvPizzaTimes10 ILuvPizzaTimes10 is offline
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they do work well. BUT are prone to fail as well. they will help but wen they go back its NOT GOOD. just keep your LT1 KM as a spare.
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Old 03-22-2010, 05:31 PM
John in RI John in RI is offline
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Talking

Seems like these things were pretty cheap 'back in the day',... BUt I had trouble finding them for under $80 recently !

No problems on an ODB1 system ? Right ??
!

P.S. I WILL be keepnig the original "just in case" !


Thanx

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Old 03-23-2010, 02:39 AM
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yeah they work better on an OBD 1 car anyway.
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Old 03-29-2010, 05:30 PM
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In conclusion, after reading this thread I am left with one question:

Should I get an LT4 knock module?
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Old 03-29-2010, 06:09 PM
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DemonWithin99 DemonWithin99 is offline
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only if you plan to mod (ie. headers, loud catback, or one hell of a head/cam kit...)
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Old 03-29-2010, 06:14 PM
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Yeah Kev its gunna be a good idea after headers to get it. what will happen is the cumputer will pick up the headers as knock and retard the timing.
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Old 03-29-2010, 06:38 PM
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Do you have to do any PCM changed after switching the Modules, or just plug it in and run it?
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Old 03-30-2010, 12:01 AM
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plug and play. its the only control the PCM has of the knock sensor is that module. on LT1's you cant tune the knock sensors like the LS1's can.
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Old 04-21-2010, 09:31 PM
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if you guys can find one grab it! ther no longer in production..
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