Kirby

Thanks For the Replys. I have a feeling it is the TPS, however because this is the upgraded throttle body from a VL, TPS adjustment is a little difficult. I need to look at it some more. Though in a recent test, I brought the revs up to about 3k, and disconnected the vacuum line to the distributor and it didnt sound like the timing had retarded at all. There was no real descernable difference in engine note. Dad is convinced its working, but i dont know. If it was stuck constantly on advance, i suppose it would explain why i have a lumpier (than i would expect) idle (or that could be the cam). As for the differences between the ZX and r30 setup, the zx is alot more complicated, electrically, and slightly mechanically different. The r30 is good because the entire system is seperate from the rest of the cars wiring, and only requires 6 connections (and a couple of relays) to the cars existing system (its also a good immobilisation point). The 280zx was designed as an EFI car so the wiring is alot more intergrated, thus I imagine harder to retrofit into say a datsun 260z (like mine). i didnt do the conversion in my car, however the previous owner that did it, did a bit of a hack job (ECU sitting in the passenger floor well, lots of different coloured wires, lots of electrical tape) i have spent the last few months rewiring alot of the system. And its all good now, apart from this small problem.

Hey, I have a L28E engine in my Z, the EFI setup came off a MR30 skyline. There seems to be a bit of a flat spot before 1200rpm, i was wondering how one would go about tuning the EFI setup so i might be able to get rid of this? I have no idea about early nissan EFI systems. I'm just trying to learn. thanks

Agreed, wahts going on here. I want to read about the stagea.

LoL, well seeing you have a Zed and are Adelaidian maybe we can take them out for a cruise sometime.

Hey, I own a 1976 Datsun 260z and have just learnt that the EFI/ECU Setup is from a L24E mr30 skyline (afaik). Now to the bit where you can help me, I am in the process of figuring out tachometer interface wiring for the ECU loom to my stock tachometer. Im sure those who have extensivley worked on these systems would be familiar with the round 9 pin plug that attaches the ECU system to the rest of the car loom. However, I haven't been able to find a wiring diagram with any information relating how the Tachometer is connected in the xR30 skylines. Am I correct in assuming it is a standard 4 wire (or possibly 3 wire) tachometer that uses the signal from the positive side of the coil (Black-White trace wire, on ecu 9 pin plug) and then a doping resistor to the positive power. and then a positive and negative input? any pictures, explanations or wiring diagrams would make me love you forever. thanks.