Re: LS ECU is best mounted where ?
So as I said above I like to hide wires but on my 98 Wrangler with a 2002 LS6/4L60E swap the ECM has had been in the engine compartment for over 15 years. Zero issues. Rain and or snow and its been bullet proof. Knock on wood but I haven't had a GM ECM fail in my daily drivers or in my hot rod projects.
In the pic you can see the ECM just below the brake booster.
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