Quote:
Originally Posted by mweber88
Matt--
I'm betting that they went with high-impedence injectors and eliminated the resistor pack for the 3.5, but I don't have concrete evidence. The flow rates should be the same provided the 3.5 is still sequentially fired like the 3.2, so using the 3.2 injectors would be your best bet.
Keep in mind, too, that you'll be playing with fuel maps a bit with this thing! You'll probably have to richen up the WOT portion of the map due to your manifold change. I tell ya, that manifold design just looks awesome compared to the Type I or 3.5. 
Keep up the good work!
Mike |
Yes, they went to high impedience injectors on the 3.5RL. Check out the wiring diagrams - the Legend's ground in an injector resistor. The 3.5's ground in a junction box (right to ground).
ECU Wiring Diagrams for Legend, 3.2TL and 3.5RL - NO 56K - *BIG* PICS
This is definetly going to be a tuning testbed :-P. I still have quite a bit of work to do and stuff to buy before I tune it.
By the way, did you check out the 3.5RL ECU? A member snapped some pictures for me. The 3.5ECU has the auto trans board integrated into the main board. It also uses the next generation of hitachi MCU's (H8/539) that have flash programmability (no ROM chip). If we could figure out the protocol they use, that would be an instant shortcut to datalogging and cheap realtime programmability. The only problems I see would be the usage of the RL's coil packs - the extra prong (RL's have 3, legend's have 2) is for misfire detection with a special ignition module. Also the high impediance injectors would have to be installed. And, I think you would have to install a post-cat oxygen sensor to keep it happy unless we could figure out how to disable it (flash from european car
?)
RL ECU Chipping Project
^the pics are on page 2
-Matt