UPDATE – 420kw @ 24.5psi, big thanks to Rick @ Mojo performance and Glen @ ESP Racing Queanbeyan, dyno sheets listed below. This made another 30rwkw+ (40rwhp+) on very similar boost.
UPDATE 2 – Thanks to Steve at Torque Toyota for the attached diagram below of the 2JZGTE VVTi ignition wiring to match the Mojo kit.
UPDATE 3 – The car has since made 486kw @ 24.5psi on e85.
After many months of troubleshooting my ignition issues as seen in this post HERE I finally came to the realisation that the stock igniter setup wasn’t going to work with my requirements. I didn’t want any complicated aftermarket igniter or alternative solutions so I did some further research and came across the LS2 LQ9 kit from Mojo Performance. After reading some great reviews on supraforums – I ended up purchasing them.
Rick from Mojo Performance was great to deal with, gave plenty of support and info and was very responsive via email considering the time differences between Australia and the US! In short it is a great bit of kit, easy to install, clear instructions and they resolved my ignition issues and I no longer have any break up of ignition on the road, although I’m yet to get back to the dyno and push it to it’s limits, this is where I used to get the worst issues.
Below is some basic installation steps on the kit for my 2JZGTE VVTi, I haven’t gone into the wiring too much as the diagrams are provided and will vary depending on your setup and aftermarket ECU, but there is the diagram above (See – UPDATE 2) to assist for stock setups . For those wanting to run the coils on the stock ECU you will need to purchase an additional module to generate an IGF signal for it to work correctly. The kit is available for 2JZGE and 2JZGTE non-vvti and vvti.
Some specific notes to my installation – I used the stock igniter wiring by cutting off the existing stock connector and soldering loom, I used the stock noise filter, I hid it away down near the front shock tower. The coils were wired in wasted spark, 3x ViPEC V88 ECU outputs used to drive them, this is possible as each coil has an igniter, but as always please refer to your specific ECU setup and wiring requirements. Currently running 3.5ms dwell.
This is the what is provided in the kit, all required hardware, quality wiring looms and instructions with wiring diagrams
Top pictured wiring loom is directly wired (Ensure you solder or use solid connections) goes to ECU wiring, the other end plugs to other loom. The bottom pictured wiring loom plugs directly to the 6x coils and then finally to the other loom.
3x brackets included with bolts and washers
Reverse side of brackets
This isn’t an issue with the mount, it’s done for the vvti brackets to clear the casting design of the vvti head for the very front bracket
6x coils in total with 2jz boots
You can see the in-built igniter with the 4 pin connector
Start by removing the coil cover with 10mm allen bolts, disconnect the coil connectors, remove the stock coils and mounting hardware, I’d also recommend removing the breather hoses between the head for more working room
Should look something like this
Disconnect your igniter harness and cut off the harness connector at least a few inches down the loom, alternatively you could bridge the connectors. Also ensure if possible to keep the stock noise filter connected
Individually install the coils to the spark plugs
Coils should face this way
Just to make sure you get the idea!
Now install the brackets over the coils, if you have the vvti bracket ensure it’s the first bracket for cyl 1+2
Closer view of it installed (Cyl 1+2)
Closer view of it installed (Cyl 3+4 and 5+6)
Install the wiring loom and ensure you refer to the wiring diagram that is applicable for your setup based on front or rear loom exit
I went rear exit for a cleaner wiring job, more room out the back of cam covers also
I connected my earth lug to the bracket bolt as it is a solid earth, try not to connect to the cam covers as they seem to have a higher resistance
I cut the exiting stock coil loom and taped it off
Coils and loom all installed, soldered wiring loom to igniter wires as required
All installed and wouldn’t know it wasn’t stock, apart from lack of igniter, and loom I haven’t hidden in top right corner.
Dyno results on 24.5psi, 420rwkw (564rwhp)