Xyra powercard3/11/2023 Iirc it had a single spade connector on it. The main part of it was proportioned something like a snare drum, a very short cylindrical shape. The one on my car kind of looked like an oil pressure switch. If you can't find a vacuum line you could always start tracing "extra" wires from your ECU.ĭummy throttle body on the manifold. On 94-97 the ECU moved behind the passenger seat, so it might even be back there. In or behind the glovebox is a popular spot, (on a 90-93 the ECU is in the passenger footwell so it's close). It's possible the device is in the engine bay somewhere, but since they have to be wired to the ECU the most likely spot is inside the cabin. There's not too many places to go through the firewall without an extra hole being drilled, there's a grommet behind the wiper motor, same thing behind the brake booster, and then the big grommet for the main wiring harness under the brake booster. IIRC, there's one in the back as well as two up front, (all on the top of the manifold). I think the "normal" place is a "t" fitting added to one of the vacuum ports on the intake manifold (injector side). On the right side, same as injectors, right? I get confused as the SC side is also intake, correct? The SC side doesn't appear to have any lines going thru firewall. Otherwise, it's a 4+ hour trip to Jackson Racing in the future. No one in my area seems to know anything about these, I do hope to get to the local Miata club meeting this Thursday (5/16) and hopefully someone there can enlighten me. I do have original installation instructions and parts list, no AFPR or powercard listed is it possible there is none? How can it be running 87 and not detonating? BTW, it will NOT be running 87 in the future. I don't have anything to compare it to, being my 1st Miata. Being skeptical of his claim, I put $10 or regular in it on the test drive as it was just above empty and tried my best to get it to "ping": pulling a hill at 2500RPM in 5th gear with A/C on, no detonation, just a nice wind-up and seems like SC is working fine. I test drove it and drove it home for a total of 100 miles in 95 degree ambient temps in foothills of the Sierra Nevada range. Intersting point, the PO was basically a "drive it & change the oil" type, put 5K miles on car in 7 years & swears it runs regular (87 octane) gas. Here are some pics of my 94-97 JR nonadjustable powercard that came with my used SC, you can see the clear vacuum line tube coming out of the box as well as what the insides look like with cover removed.Īttachment 163266 Attachment 163267 Attachment 163268 You might try starting in the intake manifold area and tracing backwards.
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