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PCV into downpipe is for racing only. It does nothing at low engine loads and idle.

For years, Volvo's have come with catch cans from the factory. They drain into the sump so no maintenance is needed unless they clog up. Probably could be retrofitted to a 7M.

What voltage do you measure at the pump terminals with the low-speed resistor enabled? My thinking is that the stock pump draws less current and so the dropping resistor (0.7 ohms) is a little too big for the high volume pumps like the Walbro and the MKIV turbo pumps. The stock pump draws...

Adam, are you running a non-stock fuel pump?

It's a good question, and ultimately depends on how much time I can spend doing this. First priority is to disseminate info on how these ECUs calculate engine operating parameters, and to publish the 7M ignition/fuel maps. I already have a daughter board fabricated that will allow me to run...

Okay, we start with Williams 7M-GE M/T ECU. First step was to build the ECU reader, which closely follows the one published by Kashi. I swapped a few components that I couldn't find here in the U.S., but otherwise it is the same. The schematic is attached as a thumbnail to this post. I had...

It's remarkable that after nearly 20 years the Toyota Computer Control System (TCCS) engine management computer used for the 7M remains a mystery as far as the public domain is concerned. Partly, this is because it uses a proprietary Denso microprocessor with zero official documentation...

If you have oil inside the CPS, then the internal shaft seal is cooked. http://www.supramania.com/forums/showthread.php?t=44846

No need to patronize SB, I know more than I am posting. Many analysts believe 85mbd is the limit for world production. They are betting on this with their long term investments. Demand is projected to exceed 85mbd by 2012 or sooner. While your comments on the USD are valid, oil now is...

Supply and (world) demand, nothing else.

During the week leading up to the Memorial Day holiday, the traditional start of vacation season, Americans pumped 5.5 percent less gasoline than a year ago. Americans have pumped about 1.7 percent less gasoline than in the same period a year ago. U.S. Department of Energy data showed highway...

Typical LFM failures can be repaired. Find out more here. http://www.supramania.com/forums/showthread.php?t=46770

The 42 pin ECU is just for knock sensing. The 64 pin ECU does all the heavy lifting.

As you state, relay energized for low-voltage.

A bit of a long shot, but since you replaced the head gasket did you remember to put FIPG under the front cam caps per TSRM? They will leak without it.. http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=EM&P=52

If you know something about microprocessors you can reverse the code since the Denso D151802 has no software protection at all. There is a free disassembler for the Denso D151802 micro. You can find it here. http://toyota.kgbconsulting.ca/mediawiki/index.php/Main_Page Kashi has a slightly...

The top grill pries off, and the speakers are underneath attached to a separate plastic enclosure. http://www.cygnusx1.net/Supra/Library/EPC/291420/catalog.aspx?F=8602&P=1

Did you drill out the J-tube restriction?

If you disconnect the sensor it will default to normal operating temp and set a code. It should run well once warmed up. If th sensor is bad and indicating cold temps all the time, then you will never get out of warm up mode. Symptom will be a permanent fast idle and of course bad gas mileage...

Sounds like a boost leak to me. Check your intake plumbing for leaks, pressurize it is you can..