Computer - GM Delco
My older brother put a 3T-GTEU into a KE20 corolla. He used a GM Delco computer to run it.My younger brother put a 4AGE into a AE86 sprinter. He used a GM Delco computer to run it.
When I was kicking around the idea of putting a V8 in my supra, one of the big factors, was to run it on a GM Delco computer. Dick from Dick's Electronics did both my brothers cars and is an absolute perfectionist. After hearing what I wanted to do with my car, Dick insisted I put a Delco computer on it and he be the one to tune it. I quickly agreed. With Dick on board I was asured of a complete and perfect tune.
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Not many people have put aftermarket computers on a 1UZ. There are a few that have an Autronic, and a Motec would probably run one too. The main problem is controlling the timing. There are 3 main input sensors. 2 cam triggers with one lobe each and 1 crank trigger with 12 lobes. This makes it hard for the computer to know where TDC is.
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Dick came up with a module that would read the signal waves from all 3 standard triggers and convert these to a TDC signal that any* computer can read. Dick and Andrew spent an assiduous 6 weeks designing, building and testing the module and creating a working prototype (on my car). The main aim was to not modify the engine at all.
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The other complicated thing with the 1UZ is that it has 2 coils running 4 spark plugs each. Dick utilised this by adding another piece of electronic genius into his module and using it to run two Bosh V8 ignition modules. These ignition modules run each standard 1UZ coil to create the spark. The V8 ignition modules were used because they could support the spark up to and over 10k revs. It was thought that the Camira modules would not handle extreme conditions.
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After doing the impossible and making the lexus masterpiece engine run on a GM Delco computer dick then tuned it. Dick does as much tuning on the road/track as he can, as he (like me) believes that dynos cannot produce enough airflow. So cars tuned on a dyno to an inch of their lives will lean out on the street, damaging engines. With me driving, and Dick with his laptop logging data we did many runs over 2 days of intense tuning. The result was a whopping 146rwkw. Up 20% on a standard Toyota Soarer. With fuel economy of around 11km/L around town and an increadible 14km/L on the highway.
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