? on 5.3 harness w/ls1 ecu
05-21-2010, 01:22 AM
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? on 5.3 harness w/ls1 ecu Hello my first post ive been searching for 2 hours and cant find the answer. Im using a 5.3 harness and wanted to know can i use a ls1 ecu or does it have to be the 5.3. The reason is its easyer to get a tune done on the ls1 ecu. Thanks for any help. Ryan
05-21-2010, 06:09 AM
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Don't know why you are thinking one is easier to tune over another... Anyway, you can full flash a 5.7 tune into a 5.3 PCM or vice-versa, so it doesn't really matter. It really doesn't matter what harness you have, as long as you have all the needed connections and sensors. Do it all the time - I just put an EFILive custom operating system in a 5.3 PCM to use in a Mustang with a 427 cu in LS7 (with an LS1 reluctor ring) transplant... there's a combination you don't see everyday...
05-21-2010, 09:52 PM
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Ok i was looking on lt1pcmtuning and didnt see a tune for 5.3 and there was another place also. There is a bunch more 5.3 vs ls1 ecus im gonna mod the harness myself just needed to know what ecu im doin the ls1 intake. Thank you for the help.
