2JZGE Na-T TT Ecu Mod
10-02-12, 06:50 AM
#512
Maybe you are not getting good spark and/or fuel from that setup, i would just use a proper 3 channel one like the ds62 ignitor, and a normal resistor pack.
Did you install a BCC to hit 18 psi? it should feel better than 10 psi even with more advance if you are hitting 18, unless the timing is way off. when you take the jumper out does it jump to around 14-16 degrees at idle?
Did you install a BCC to hit 18 psi? it should feel better than 10 psi even with more advance if you are hitting 18, unless the timing is way off. when you take the jumper out does it jump to around 14-16 degrees at idle?
I am going to get a 3 channel igniter just to make sure. I did find that the plug wires that came with my coils were junk, so I modified my old wires to work with the VVT-i coils. It's better, but still not right.
I didn't check to see if the timing jumped around w/o the jumper, but I was throwing a code for misfire. It's too early to see if the wires eliminate that because when I put the wires in, I guess I tweaked the turbo oil feed line because this happened and I'm still cleaning it up:
10-02-12, 07:38 AM
#513
10-02-12, 07:44 AM
#514
Sorry for the delayed response. It's been busy. Bought a 67 Jeepster Commando, all 3 of my street bikes broke AND the starter went out in the V10 F150.
I am going to get a 3 channel igniter just to make sure. I did find that the plug wires that came with my coils were junk, so I modified my old wires to work with the VVT-i coils. It's better, but still not right.
I didn't check to see if the timing jumped around w/o the jumper, but I was throwing a code for misfire. It's too early to see if the wires eliminate that because when I put the wires in, I guess I tweaked the turbo oil feed line because this happened and I'm still cleaning it up:
I am going to get a 3 channel igniter just to make sure. I did find that the plug wires that came with my coils were junk, so I modified my old wires to work with the VVT-i coils. It's better, but still not right.
I didn't check to see if the timing jumped around w/o the jumper, but I was throwing a code for misfire. It's too early to see if the wires eliminate that because when I put the wires in, I guess I tweaked the turbo oil feed line because this happened and I'm still cleaning it up:
sounds like a rough week, when it rains... as soon as I saw the picture I knew exactly what you did, don't worry man I have been there before. I rested my elbow (accidentally) on my feed line once when taking out the o2 sensor, I heard this little click, and I was like oh no did I break it... so I started the engine and about half my oil came out in like 5 seconds before I could shut it off, definitely broke it although it still looked fine. Huge mess so I completely understand. also sucks it hit the Z, why oh why not the Ford instead
sounds like something is still up I am sure you will get it with a bit of troubleshooting, as I said I settled on the combo on page 1 because it all seems to work together harmoniously, although I would never rule out a wiring problem with this mod because it is a common mishap.
3 channel ignitor should get the communications with the ecu happy. once you get rid of the misfire code all should be good, Toyota ecu's are a bit picky when it comes to talking to the ignitor and the tps. all the other stuff is more universal.
10-02-12, 12:57 PM
#516
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Quadruple checked all my wiring and ecu pin connections and all are good. Map is getting all correct wires in the right spots but still getting wierd readings. Could be this crappy analog multimeter but power wire is showing over 5v signal is showing just under 5v
10-02-12, 02:53 PM
#517
either way will work get 550's and use USDM ecu, or use the 440's with the jdm ecu.
The other possibility is the signal pin isn't seated in all the way at the ecu, but because you are getting the same voltage when touching ground to signal, and ground to power, I think the power and ground wire are swapped, and also because I have personally made that mistake along with a few other members.
I would get 5v across power and ground, and 4.8 on the signal when it was wired incorrectly on mine.
the signal needs to be around 2.3V give or take, and the 5V across the power and ground.
try swapping the outer 2 wires on the map sensor (power and ground) and let us know how it goes.
you are lucky if you were using a different sensor you may have fried it, but the TT ones seem to hold up when conencted in reverse. motorolla 2.5 bar map sensor pops instantly when plugged in backwards.. good thing they are < $20 though
Last edited by Ali SC3; 10-02-12 at 03:01 PM.
10-02-12, 04:31 PM
#518
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i think my JDM ECU is bad,
on another note, i have no tach in the car, I ran the wire from the TT ecu to the stock tach output at the old igniter, but do i need to jump a resistor? if so which one in the cluster do i jump?
thanks
on another note, i have no tach in the car, I ran the wire from the TT ecu to the stock tach output at the old igniter, but do i need to jump a resistor? if so which one in the cluster do i jump?
thanks
10-02-12, 04:33 PM
#519
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Switched them and am getting 5v power and nothing to signal. It is possible i started it like this before which i know is backwards now but before i can't remember how it was wired. I did have the wrong ground wire connected for a majority of our starts and test drives
10-02-12, 04:50 PM
#520
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sooo anyone have a map sensor they dont need?
and ali did you ever get the motorola 2.5 bar to work and how do you wire that thing it has like 6 connections?
and ali did you ever get the motorola 2.5 bar to work and how do you wire that thing it has like 6 connections?
Last edited by briggs33; 10-02-12 at 05:12 PM.
10-02-12, 05:39 PM
#521
pre-95 jump r109 resistor. 95-97 jump r73 resistor.
98+ VVTI years already have coilpacks so you are good to go.
the 2.5 bar wouldn't start my car with the 440's installed, and you only use the first 3 pins, which is why its easy to plug it in on the wrong set of 3 and bam its toast. the signal voltage was like 1.8v on the motorolla, so larger injectors would be needed to make it work well and the how well it would work/drive is also a big guess, no ones done it yet.
Another member did verify that the 550cc and afc combo does work well on the gte ecu, and the map ecu seems like it works even better.
10-02-12, 06:04 PM
#523
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I might just grab the motorolla since its so cheap andim using 550s so i should be good there. Will need to make sure on wiribg for those points though if it fries that fast
10-02-12, 06:20 PM
#524
yeah if you have 550's and the jdm ecu it may be close, I would recommend checking with a wideband if possible, I had fried my first 2.5 bar without knowing it so I only have my 440's now.