Possible Install on a GM 4.3 V6 with TBI Injection.
Posted: Wed May 12, 2021 8:07 am
Possible Project 4.3L V6 in a 1994 Oldsmobile Bravada (Currently has a Carburetor after the CMPFI failed and have a TBI unit ready to go into it.)
I just had a couple questions after I've read through the manuals and the old WIKI.
So first I guess it's kind of unclear but if I retain the use of my Computer Controller 8-Pin HEI distributor, do I need to have a separate crank/cam sensor? (I haven't found mention of a cam/crank sensor in my service manual, but that doesnt mean its not there).
I saw the specific settings about setting the trigger angle and wasn't sure if that was in reference to the input for the position or not.
My next question, Which may or may not be able to be answered without opinion, but since the TBI unit itself has two injectors, how would they end up getting timed? I mean I presume they would be connected to two different I/O slots but just timed to fire at the same time.
My last question here is that I think the TBI unit uses a stepper style IAC, I read the v0.4 has better capability with driving those, but I couldn't see much on how the v0.3 would handle it. If anyone has an idea how that works or even a suggestion for which version is better let me know.
I may or may not end up going through with this right now since it has the 4L60E and I know I'll have a few headaches getting the trans to work again after a full ecu swap. (I might install it on my other car with a 3.1L V6 to maybe get some more power out of it, thats only a maybe).
If anything I'd just like to get some better fuel economy out of my daily.
Maybe just a last last question, this might be something I have to figure out on my own, but is there a way to have multiple tunes loaded in and switch between them? Like maybe a City tune, a highway tune, a perfomance tune? I don't need that ability but it would be fun to play with.
I just had a couple questions after I've read through the manuals and the old WIKI.
So first I guess it's kind of unclear but if I retain the use of my Computer Controller 8-Pin HEI distributor, do I need to have a separate crank/cam sensor? (I haven't found mention of a cam/crank sensor in my service manual, but that doesnt mean its not there).
I saw the specific settings about setting the trigger angle and wasn't sure if that was in reference to the input for the position or not.
My next question, Which may or may not be able to be answered without opinion, but since the TBI unit itself has two injectors, how would they end up getting timed? I mean I presume they would be connected to two different I/O slots but just timed to fire at the same time.
My last question here is that I think the TBI unit uses a stepper style IAC, I read the v0.4 has better capability with driving those, but I couldn't see much on how the v0.3 would handle it. If anyone has an idea how that works or even a suggestion for which version is better let me know.
I may or may not end up going through with this right now since it has the 4L60E and I know I'll have a few headaches getting the trans to work again after a full ecu swap. (I might install it on my other car with a 3.1L V6 to maybe get some more power out of it, thats only a maybe).
If anything I'd just like to get some better fuel economy out of my daily.
Maybe just a last last question, this might be something I have to figure out on my own, but is there a way to have multiple tunes loaded in and switch between them? Like maybe a City tune, a highway tune, a perfomance tune? I don't need that ability but it would be fun to play with.