scribb

I appreciate the feedback. Everything went smoothly with the build until I got to the point of tuning, and suddenly everywhere I go it's "wait, what, it's an automatic?" So I'm trying to figure this out after finding myself unexpectedly in the deep end. I've reached out to the loom manufacturer for more details. For whatever it's worth, here's what they say on the page about it: "As of right now, we only have support for automatic transmissions if you run the factory ECU for them... On Toyotas specifically, the factory chassis ECU gets retained for MultiPlex compatibility, meaning the factory ECU will control the A/C, gauge cluster, throttle, auto transmission, ABS, etc. " I'll get as detailed a spec as I can and post it back. Thanks.

It doesn't look like there's any communication between the transmission and the Link ecu. The wiring harness was built to separate engine management and route it to the Link ecu, and retain the transmission management with the original Toyota ecu. I have no idea how the system works--does the transmission communicate back out to the ecu what gear it's in? Or does the ecu set the transmission gear and not need a confirmation signal? Does anyone have any positive experience getting this worked out?

Sorry--first time using this forum.

The box says StormX G4X, but when I input my serial number the forum automatically listed it as Storm+ on my profile. (?) At the moment, the tuner is unsure if they can help--I guess given some of the uncertainties you've noted. I'm trying to do the due diligence to take as many questions off the table as possible. I got the wiring harness through XAT Racing, and they set up the piggyback wiring. I'll see what I can figure out with regard to how the signals are divided and routed to the stock ECU and Link ECU. Really appreciate your feedback.

I just finished building a 2uz rebuilt for my 2005 4Runner and I've reached a point where I really need some help. Here's my situation: I hydro-locked the original motor and decided to have a new motor built for the truck. I decided on N/A, built it out at 10.5:1 compression, with forged rods and pistons, Kelford 208b cams, and Victory (bosch) 650 cfm injectors. I had a custom wiring harness made that piggy backs the StormX on the stock ECU, which was left in place to run the automatic transmission. I haven't even started the motor for the first time, and I'm already talking to my 3rd tuner after the others bailed on dealing with an automatic. I'm in California, and haven't been able to find any other tuners familiar with 2uz motors. The third tuner is hanging on to see how the initial start and run in goes before committing to try to tune it. So, I'm trying to figure out the strategy and logistics for start up and run in. The builder recommended an initial motor run in neutral at varying RPMs for several minutes, then run-in drives up to no more than 50 miles at various non-aggressive speeds. Then an oil change, then ideally 500 miles more of easy miles and an oil change again before tuning. What I'm looking for help with is: 1. Where to find the best baseline map for a 2uz vvti. 2. How to program the safest modifications to the map to accommodate a Kelford 208b cam, 10.5:1 compression, and 650 cfm injectors. 3. Do you know a good tuner in California that can tune an automatic 4Runner? If not, can you point me to anything documented on dealing with automatics with piggy-backed ECUs that would be encouraging to my current tuner? I'm familiar with programming so I can find my way around the application, but I'm a complete newbie programming ECUs. Thank you!