AEM Plug and Play 30-1710 - I could use some help installing it
The dilemma
I have a 30-1710 AEM Plug and Play that I am installing in my boosted 90 Miata. I hope to accomplish two things with this thread:
My plan In the interest of keeping everything organized, I plan to list (in the second post of this thread) all of my questions in an ordered list. Once a question is answered (or if I figure it out on my own), I'll strike it through and reference the post where the answer occurred. That way, anyone can land on the first page of this thread and see which problems have been addressed and which are outstanding. I figure that if I am going to beg for help, I should at least make it easy to navigate. Hardware, etc. Here are the details about my car and the setup:
The Goal I would like to make at least 220 whp but obviously I'd prefer more. I will have the car tuned by Tony Palo here in Texas (simply put, he's a big deal in the tuning world) and I have the utmost confidence in his tuning abilities. I will be running E85. I intend to use the O2 sensor to actively trim while I drive and not just as a readout to let me know when something goes wrong. I've known people who had cars that were great at WOT but they sucked at partial throttle. I want my car to have good transient response. I would like to build the fuel injection system with scaleability in mind. I don't want to do anything shortsighted and (if it doesn't screw up my time frame) I would not at all be opposed to adding coil-on-plug ignition or a higher resolution crank trigger wheel. In the future, when I want even more power, I would like to more or less be able to add a built engine to the mix, up the boost, and get some additional tuning. In other words, I'd like to build a high-horsepower-capable fuel injection system and I would like a great degree of control over the engine. Thanks I really appreciate any help you guys are willing to give. |
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Questions:
ECU and general wiring
Fuel system
Sensors
Ignition So my ignition setup is kind of weird. The previous owner removed the external ignitor and wired in NB coils. No one can seem to fathom why this happened or what they were hoping to solve. I found an ancient thread on miata.net where someone discussed such a mod and it was not very detailed. I would like to be able to make some modifications to my ignition system but I really need to figure out exactly which wires were modified first. I'll take some pics and ask some questions about that in the future as I investigate further. However...
Thanks, guys. |
I did some checking an apparently I have a "Series 1" EMS.
Also, I have a tentative answer regarding the ignition issue. According to AEM's tech support, I can use four of their smart coils. The smart coils need a power and ground and I then wire the signal wire from the ECU which tells them when to fire. I would repurpose the factory 1 and 2 coil drivers to the smart coil for cylinder's 1 and 2, and I would use pins 3A and 3B (from the AEM ECU's spare ports) for cylinders 3 and 4 respectively. I must then simply run spark plug wires to each cylinder. Obviously, this would require coming up with some sort of bracket for all of this and it may also require that I run a separate signal wire for the tach. I think that sounds like an easy solution, and I may have to go that route if I can't make sense of how my factory harness has been altered, but it may not be as clean as reverting back to stock wiring and then installing a ready-made coil-on-plug setup. |
Also, obligatory cat contribution:
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I figured out how the mounting plate works on the boost solenoid. Pretty obvious now, I suppose:
https://www.miataturbo.net/attachmen...ine=1372885697 |
Pretty sure I talked to you on the phone this morning. Hopefully I answered all your questions.
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Indeed you did, sir. Thanks again for your help.
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Is your car up and running on the AEM now?
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Not quite. I just can't find time to finish getting it up and running so I'm letting it go.
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