2JZGE Na-T TT Ecu Mod
11-09-12, 08:56 AM
#709
Sigh...
So I figured out my plug wires were leaking electricity
I installed new NGK wires. I also rearranged the coils because I had the coil perched on #1 and it seems the VVT-i has the coil sit on #2. That of course required repinning the igniter and resetting the timing. It idles fine and runs fine - but now it surges under steady throttle. i haven't even started troubleshooting, just felt like venting.
So I figured out my plug wires were leaking electricity
I installed new NGK wires. I also rearranged the coils because I had the coil perched on #1 and it seems the VVT-i has the coil sit on #2. That of course required repinning the igniter and resetting the timing. It idles fine and runs fine - but now it surges under steady throttle. i haven't even started troubleshooting, just felt like venting.
11-09-12, 08:35 PM
#710
It happens just take a break and try again. I have the NGK they are great.
If you look at my diagram the coils sit on 2 4 and 6 like on the vvti.
double check the repinning at the ignitor i guess It should be exactly like the diagram.
If you got the wiring right the timing should be the same, maybe you swapped the wrong pins.
From your previous setup, moving them forward one cylinder, you should have swapped the outputs for coil 1 and 2. Remember coil 3 is for the middle 2 cylinders no need to swap that wire when moving up one.
I have done it so many times I feel like I can do it in my sleep now.
If you look at my diagram the coils sit on 2 4 and 6 like on the vvti.
double check the repinning at the ignitor i guess It should be exactly like the diagram.
If you got the wiring right the timing should be the same, maybe you swapped the wrong pins.
From your previous setup, moving them forward one cylinder, you should have swapped the outputs for coil 1 and 2. Remember coil 3 is for the middle 2 cylinders no need to swap that wire when moving up one.
I have done it so many times I feel like I can do it in my sleep now.
Last edited by Ali SC3; 11-09-12 at 08:41 PM.
11-10-12, 03:28 PM
#714
I'm about ready to throw in the towel. I can't get this damn thing to run right. I also can't seem to get the tach to work. I also INTERMITTENTLY have the same issue as duhafnusa4 where it will crank and crank and crank and won't start. My battery is 2 weeks old, plug wires and boots are new. Didn't have this issue on my GE ECU so fuel pump and regulator are good. Could be ECU, MAP, or injectors at this point I guess. I'm just fed up.
11-12-12, 11:29 AM
#719
I just jumpered the first resistor that pin 9 of the middle plug came to. I also verified that it eventually went to the tach.
I have a lot of clusters from different experiments. IIRC, this one is a combination of a 94 5 speed, and a 95 auto.
11-12-12, 04:28 PM
#720
Lexus Champion
I don't have a problem reading all 48 pages.but before I do.I have 98 vvti in the middle of going NA-T.will I be able to do this mod if I get a Vvti GTE ecu?
This is my set-up
Borg Warner 83-75,Stainless steel manifold,ffim w/ 90mm throttle body,Tial 38mm WG,2 Blitz BOV,Aeromotive FPR,850cc,Twin in tank Walbro fuel pump,AEM standalone,Aem Wideband,HKS Cam Gear,Blitz SBC i-D boost Controller
I ask because now I was told I need to keep my maf installed.
This is my set-up
Borg Warner 83-75,Stainless steel manifold,ffim w/ 90mm throttle body,Tial 38mm WG,2 Blitz BOV,Aeromotive FPR,850cc,Twin in tank Walbro fuel pump,AEM standalone,Aem Wideband,HKS Cam Gear,Blitz SBC i-D boost Controller
I ask because now I was told I need to keep my maf installed.