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1BadAction
April 6th, 2015, 02:48 AM
Can someone tell me if the firing order is able to be modified? (not a deal breaker if not, but it would make things easier) Also, can the E92 drive standard injectors in lieu of direct injection?

The idea here is to swap to an E92 on an engine I convert to 58x so I can also use an 8L90... Of course there are aftermarket options to control 8 forward speeds in an automatic, but the factory GM option will be nearly plug and play. Stock trans tune from a 15 silverado should be nearly perfect for the size and weight of my truck. Not to mention the superior availability and durability of factory controllers.
DURAtotheMAX
April 6th, 2015, 04:28 AM
Will the new T87 8-speed controller not communicate with an older E38 or E67?
1BadAction
April 6th, 2015, 08:42 AM
Will the new T87 8-speed controller not communicate with an older E38 or E67?

Good question, if it worked with an E67 I would be much more comfortable.
GMPX
April 6th, 2015, 09:03 AM
E92 won't work with standard injectors (I have no actual proof of that, but I can't see how it could).
The T87 should actually work with the later normal non DI controllers, as late as you can get the better as the CAN messages should match the platform pretty close.
Mind you if you do this and it doesn't work you will be in a world of trouble, configuring CAN messages is a GM engineering dept only task.
1BadAction
April 6th, 2015, 09:55 AM
E92 won't work with standard injectors (I have no actual proof of that, but I can't see how it could).
The T87 should actually work with the later normal non DI controllers, as late as you can get the better as the CAN messages should match the platform pretty close.
Mind you if you do this and it doesn't work you will be in a world of trouble, configuring CAN messages is a GM engineering dept only task.

Thats what I was afraid of on both counts.

I may just need to go aftermarket, the info is out there to do it relatively clean and tight... Maybe in a few years this will be figured out a bit better and I can swap to the factory stuff then.
GMPX
April 6th, 2015, 10:43 AM
Well having been down this path a few times with people getting the CAN bus messages lined up correctly between model years is too much of a mess, in fact I won't even attempt it now because we never seemed to get it 100%.
Try PCS, I think their controller can do the 8 speed.