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was a machinist straight edge used? You wont find these on the shelf locally. $100 bucks or so online is the usual option. Even the use of scotch bright and 2000+ sand paper will remove more than enough metal to waffle the deck. A lapping plate larger than the deck is the only option I would...

and how much did that new sensor cost you?

Dan, its true the load would remain on the efi main relay circuit. When i rebuilt the harness I found several power circuits that utilized the parallel wire from a series source layout. At the time, I foolishly thought nothing of it. Thankfully I only noted ignoring this on the B+ circuit...

apexi neo to B+ and E1. Run the wideband off another circuit. The fuel pump puts enough load on B+ as is. Widebands can pull an amp or two depending on the manufacture. Looks like your setup will require a bit more. The zt2 shows a 4a reset-able fuse according to the instructions. In...

^ that, just like any piggy back/ standalone its all in the tune and tuner.

Poodles and Jetjock, i believe my schematic could easily be used with out opening the harness and just running new power and grounds. I had a few circuits that needed attention due to voltage drops. ABS power feed, AM1, AM2 and the alt to JB/1 power feed all had 2-300mv drops with 5 amp loads...

This might help if you follow my relay wiring. There are extra tabs already built into the fuse box for the left and right headlight fuses. This can be seen in the internal layout diagram of JB no2. These can be used in conjunction with the original wires. I used these for power to the lights...

Heres what I found in my stock, 89 grey plug, 7mgte tccs. Small change in the resistor value for the injector snubber. What is interesting is the TC40H157p. It appears to control the injector signal source. Im guessing the MF166 (ND) is the backup IC in case of a failure in the 64pin...

Using a mix of stock+ radio shack microphone cable for signal is the first place I would start. Run back through this link. http://oldschool.supracentral.com/htm/knock.htm The sensors or wiring can have issues long before code 52 is thrown. Code 52 is an outright failure via a short or open...

Guessing by his initials in the corner of the board, he had a run of boards printed. Any extra boards jon? Time to get a few of those parts hanging around your garage into the car! Run the 5v signal into a I/O pin on the ecu and boost pressure can be logged.. to much to tinker with, never...

Care to explain?

^ must be because the 7 bad headgaskets eat the other bearings before the thrusts wear out.

The power supply for the motor may need careful consideration. A lower voltage motor might be located to use the boards 5v supply but you dont want to pull to much current and drag the mcu into a brownout situation. Lots of variables to keep in mind. Have fun!

the 12v from the car will have unwanted noise and substantial transients that can wipe out an IC and other items. A usb cig power plug might be a good start but dont rely on it being a clean output. I would use a switching regulator over a linear. My last circuit used two linear regulators in...

actually wouldnt be too difficult on paper. A small stepper/servo motor to turn the cable end on the stock gauge cluster and an 8 bit mcu would suffice quite easily. The ABS speed sensor may offer the desired input to the mcu A/D ports and your set. A clean and protected power source will be...

this time with the data sheets

Im looking into P&H circuits for add ons down the road. Several posts from injector manufactures state that a true P&H driver/low r inj vs a Sat driver/low r inj can have significant effects on fueling. I've seen statements of needing 8-15% less fuel with the P&H drivers due to opening times...

Thanks for the replies guys. Dirgle- I could see the current draw being for a peak pressure situation. What concerns me is that there are several varieties of low resistance injectors that usually fall into a 2.5a peak/.5a hold or 4a peak / 1.5a hold. The common P&H drivers seem to accept a...

Few things bouncing around between the ears.. According to the attachment, Stock 440cc injector coils saturate at 2.3-2.4 amps. Theoretically this current would never be reached. 3 ohm resistor pack in series with 2 injectors at 2.9 ohms = Rt 4.45ohm (ideal) voltage across resistor pack...

Just an FYI... Never stuck with this setup. Rx7 cooler is a pain to mount. Using a b&m bar and plate 2-3 times the size of the stock unit and aeroquip hose. Been using it for several years with out issue. Mounted between intercooler and ac condenser where the third ac fan would normally be.