retorq
Full Access Member
You'll more then likely still need a chip after that do to the increased volume and signal getting to the TBI.
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http://www.gmt400.com/forum/showthread.php?1362-How-To-Ditch-EFI-and-keep-TBI-PCM-for-4L60E-Control.
Another link in that thread from GMFS....you do not need a trans controler