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Joe: Sorry for the bum steer. I looked at the pic again and it does look like the fat end is bigger than 10mm. arg. I've still got a few mounting bolts in stock, $15 each plus shipping. I have a local specialty fastener place (Hilco) looking into it. They have some samples that are 10x1.25...

Joe: The hole in the sensor is 8mm. The large end of the step stud is 10x1.25, the small end is 8x1.25. The studs I used to supply were also 10x1.25 to 8x1.25.

Toyota makes step studs for a Bosch style sensor that screw into a 10x1.25mm hole: http://www.mr2oc.com/showpost.php?p=4498282&postcount=95 http://www.mr2oc.com/showthread.php?t=377192&highlight=resonant

The scope is a "Leader". I don't think they are made anymore. It has a 12v converter so I can plug it into the cigarette lighter when I go on a call. Answer to your second question is si, senor.

I made a short video showing the bargraph signal. It's the top trace on my scope. The bottom trace is the knock sensor signal: http://picasaweb.google.com/JohnPizzuto/JSVampireInstallation#5389069501584814018 You can log that signal. It's 0 to 1.3v in ten increments. The signal changes as...

I see the cable for a gauge, but no gauge?

Shane: My emails went weird on me in February. I started getting two or three thousand per day, all repeats. That's why I stopped responding. Turned out some setting in my email account changed. I'll replace your gauge. Are you at the same address?

Hey guys, I just saw this thread. I've been out of town since mid March, should return next week.

That part is a Bosch equivalent made by Siemens, repackaged by Airtex, and sold online from RockAuto for $20.

No, you da man, Joe. Thanks for that.

Joe: I've had a couple crashes since you got your unit so I can't search my emails to see what happened. I am sorry that you didn't get the help you needed, either from me or your dealer. For those that haven't seen it, here's the installation diagram:

I had trouble getting processors at a reasonable price. The one I was using in all our products was discontinued, but there are sources. Last time I bought them they were $56 each, for a part that used to cost $16. I have since found a source in Asia that is more reasonable, and I have a...

The J&S is a timing controller. Some have a feature that could OPTIONALLY be used to mess with the TPS signal. That's all. If the AFC also messes with the TPS, then don't connect the J&S to the TPS. Presto, no conflict.

Don't know when it will be out, but I built the first one a couple weeks ago and still haven't powered it up. It will handle up to eight channels. Has a headphone jack to listen for knock, plus a row of LED's to show which cylinder is knocking. Won't mean much if you are running waste spark...

The 1ch2/ch unit is basically out of production, but I have parts to make a few more. I made a few different versions of it. The original version had an adjustable MAP Limiter, adjustment range was 2.5 to 4.85 volts. This was primarily for the Honda and Subaru guys. The TPS pin was an output...

New J&S has eight channels, includes a knock amp, and a row of LED's to show which cylinders are knocking (not for waste spark). New mode switch to disable the knock retard function but still show detections. Some tuners have stated they don't want the knock sensor "interfering" while they are...

MSD Knock Alert has no timing control. The description is talking about using it in conjunction with one of their manual retard boxes.

That's why it took a while to get it.(dance)

I forgot to mention that the owner of the unit in the Auotospeed article said the magazine kept the unit, and he had to make an effort to get it back. He was considering importing them, but the taxes, duties, shipping, etc meant that he would have to sell them for $900 Au, (1998).

Thank you so much for bringing up that glowing report. Quoting: "The car was running high boost and advanced timing - enough to make it detonate when the non-intercooled air hit the combustion chambers." I suspect the detonation heard by the writer was actually pre-ignition, which occurs...