PhreakdOut wrote:One other note: When checking pipe diameters: Many times, Toyota will require Airgap pipes. This is where there is and inner pipe and a larger diameter pipe over the inner. A layer of air between the two pipes insulates heat. (Either for faster converter light off performance or protect the engine bay from heat.) An outside measurement on an airgap pipes would be drasticly overstated.
On my first 1mz-fe engine (from a 2001 manual Solara) the manifolds had simple pressed steel heat shields.
On my newest engine (2001 engine from an automatic Solara) the manifolds are exactly as you described. But the inner diameter of the pipes are the same as on my earlier manual manifolds.
Any of you guys need help with your engine wiring, ECU, or figuring out what the systems are... Let me know. I've had practice.
This time around, I'm rewiring the engine harness to be that of a manual set-up. Really its only a couple changes on the grounding of the ECU & a few sensors, a few nix-ed connections, and the swapping of the A/F sensors with heated O2 sensors. no resistors or tricks needed to get it going.
All of you who have Automatic trannys or have a cali-legal (not Fed-legal) engine, and are talking about o2 sensors... your using the wrong term. Your engines are equipped w/ Air/Fuel sensors.