ENR34

OK - so a few posts back I explained the start of my search for what was occurring with my stock ECU RB25DET Neo, causing it to hesitate when boosting. I had found a fairly obvious ignition timing reduction, which I though could have been coming from the knock sensors reading some activity, or from the stock ecu hitting a limit. I had logged some data through Nissan Consult, and this was the result : A big hole at about 3000rpm, and then back down there again from about 4000rpm onwards. The timing values not where I would have expected them to be, based on a quick look at the stock Nissan timing maps : About 23 degrees of timing at 3000rpm would be better (than my recorded 13 odd) and at 4000rpm about 27 would be great. Things improved slightly after taking the knock sensors out of the loop, and also turning the boost back to 10psi, but still holes in the ignition timing trace, just not quite as bad. I went back to the drawing board, and started reading up on the limits...

So, in my last post I was getting confused as to which set of ATTESA ETS codes are used by an R34 GT FOUR sedan, as it seemed to be contrary to what the factory shop manual said. I did some more research after responding to a request for help from a post on sau.com.au  from a guy with a Stagea, and I ended up getting a look at a Stagea workshop manual and wiring diagrams. Seems that there are a few variants of the ATTESA ETS system across Skylines/GTRs/Stageas. The Series 2 Stagea (with the NEO engine) is very similar to the R34, which is really no surprise. By similar I mean that the wiring looks almost the same, error codes ARE the same as my Sedan GT-Four, but there are a few interesting points to note. The S2 Stagea and R34 GT Four both appear to have a 3-axis G sensor, whereas S1 Stagea and older Skylines (R33 GT4 perhaps, and R32..?) only have latitudinal and longitudinal G sensors. You can tell by the differences in the wiring diagrams, there is an additional sen...