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Thread: 98 harness and computer
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11-20-2009 #1
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98 harness and computer
I was pretty much given a automatic 98 ls1 engine harness and pcm today. harness is flawless!
is it even worth using? or should i buy a stand alone and sell off this one?
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11-20-2009 #2In my opinion, it really depends what you are doing to the engine. And also, are you running a 4l60E with the LS1 you are putting the harness/pcm on? Is it going to be a mild buildup, running a mass airflow sensor? If so, no reason not to use it. 98 computers are plenty tunable for most cases. However, if you are running a turbo and need 2 bar, or not running a MAF and running in speed-density, then 99 and newer PCMs are better because you can run custom operating systems in a 98 PCM. Make sense?

GM EFI Tuner
1980 Z28 Pro-touring project - sold
2002 Trans Am 9.41 at 143mph on pump gas and drag radials - sold
11-21-2009 #3
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right now i have a fully functional carbed/t56 ls1.
i want to dump the 6 speed in favor of an auto once again. only reason for switching to FI is to run the electronics for the 4l60e.
i just picked up a very low mileage 2000 camaro 4l60e dealer replacement unit off of a friend of mine.
i am also debating just getting the TCI trans controller and leaving my current carb/gas tank/ignition system alone to save money.
a ricks efi tank alone will set me back more than the trans control unit!
11-21-2009 #4



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