7AGTE, which ecu use ... Options

[frotou]

I`m in progress to complete a 7agte in my ST 1994.(Don`t try to change my mind , there a lot of work there is made now). I have a GREDDY E MANAGE + PROFEC e01 as piggyback but I would like to know if I can use my 7afe ecu or I NEED the 4age ecu for this setup ?

There is somebody who try this in a 6th gen celica ?

Thank you for help , and what a NICE site on the 6th gen !

Frotou

[Mr2swift]

Here is the rule of thumb with any hybrid. You must (or should) use the ecu that matches the head. So if you going with a 7age, you should use the ecu from the 4age. Frotou, with your setup perhaps standalone is a better option because it appears as if you did not get the complete loom with accessories and ecu to match the 4age head. For all others reading and want to do the swap as well, be sure to get the head, wireloom, and accessories from the 4ag or 4agze. I am a big fan of piggyback until you must use standalone. Standalone is not something Novices like ourselves should try to get, and shame on all forum members who talk about standalones when they are using the stock ecu and have no experience with them. If you do have a standalone on your application and you mentioned standalone then I am not talking about you. I do not want to debate the standalone situation but If have not configured one, been to the dyno to trust someone you do not know to tune the parameters on your car and you have no idea what the hell he is doing but you are just trusting him, then lets not mention standalone.

Best way to get to a 7agte would be a 4agze head, loom, ecu and accessories. With this you can use a safc for fuel tuning. If you are big on the greddy emanage then I would suggest you use the 4agze head and efi from the US model. If you choose to use the Jdm 4agze with Dli then you will need to wire in a special resistor so that you can subrtract timing. The only issue with the greddy emanage and the dli 4agze is you get a check engine light when you subtract timing. Everything else works fine ie.. add and subtract fuel and add timing.

So sorry to catch the post so late as I would have loved to chime in earlier but I frequent the Mr2 message boards and sometimes catch topics that I can chime on in a bit late. One thing that is a must when doing a 7ag project is to change the stock rods into full floating with a bronze bushing and balance the ENTIRE bottom end. This is the ONLY way to have longevety out of this hybrid as I see so many make the mistake in not modifing the stock rods when they use them, or not balance the entire bottom end as these 2 things are critical with the 7ag hybrid.


Ron (951) 283-3778
Motors Unlimited