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It just stopped working during a dyno pull. I was watching when it happened. Suddenly we could only get about 30% throttle. I knew that probably meant it was operating by cable only. I did a very quick check of connections and whatnot and it wouldn't come back online. Apparently it worked again...

It looks like the 1998 SC400 has a dedicated "Cooling Fan ECU". It does have one connection to the ECU, but I can't find anything in the FSM that tells me what that line does; I'm assuming it carries an error signal in the event that the sensor, fan, etc fail. So, I think I'm good on the fan...

On the plus side, I was out of outputs, but getting rid of ethrottle gives me three back... might need one of those for the fan!

Ethrottle was working, but failed on the dyno. I had a kit that allowed us to do away with it and just use the cable, so that's what I've done for now... figure it is less things to fail on track. I am not surprised the VVTI settings are different. Like I said earlier, the tuner didn't seem to...

Good morning from Houston, Texas, USA!

Howdy, I have a 1998 SC400 that I'm turning into a street/track car. Mods to the engine are fairly simple, PPE headers, some port work on the head, VCIS removed from intake, and now a Link ECU. There is also a R154 swap done. Full build thread here...

This post just depressed me, as someone just getting into the 1UZ. Seems like there are at least a couple of options for forged pistons from Suprastore: https://www.suprastore.com/suspjefocupi.html https://www.suprastore.com/cpfopikit1u1.html Are they no good?