Jefferson.C

Great, thanks Adam. Last question regarding the AN V error. If I use the 0.5v & 4.50v with the error value of 0 kPa I get a fault code. Is it acceptable to use 0v & 5v here to avoid the error fault?

I have installed two 7bar WHP (ECU Master) pressure sensors for fuel and back pressure. Gauge pressure 0-100psi. Would the 7bar calibration be correct for these sensors or should I use a Cal 4-6?

Been trying to figure out why I am having this lean spot at roughly 2500-3k mark. I don't recall this being a problem when I had stock cams fitted, I have recently installed some Tomei 256 pon-cams. It's RB25 with RB26 ITB's. NZ trigger kit. Quite heavy valve springs so I do get a little VCT gear chatter but otherwise healthy strong engine. The A2 GP output is my VCT switch to clarify on the log, though it's ON and does not appear to be the issue. The only way I have been able to mask the problem is by having larger then normal VE values in those areas. The only thing I can see is my short pulse width adder table at around that 3ms mark goes from 0.000 (2.875) to -0.0048 (3.000) then jumps to +0.0032 (3.125) This is the information I was supplied from ID so I will assume it is correct? I am not sure if this is what would cause such a problem or it's just the nature of these camshafts and air movement through the engine at that particular RPM and load. Keep in mind my o2 sensor is located at the bottom of the downpipe, so expect slight delays Aug20.llg 240sxAug20.pclr

As for IAT heat soaking I have found using a 4D table like this has helped cure lots of my personal RB engines for restarts with heat soaked IAT and fuel rail, where the engine would run very lean momentary until the heat soaking would cool off. I didn't like just increasing the values too much in the post start enrichment table at operating temps because I only get heat soaking after 10+ mins of being turned off. No need for rich restarts if I just have the car off for a short period of time. The post start decay time table at operating temps is a little longer, around 10 seconds. It worked for my applications but I'm sure it could have been finessed but gives you some ideas.

I'm only familiar with RB engines but I have found starting with the Thunder base map example charge temp table has always worked well for me.

Thanks Adam. It's belt deflection and high spring pressures is what I am probably looking at. No errors and my scopes are within reason. Always appreciate how informative your answers are.

What area of filtering would be preferred, RPM Filtering (Trigger Setup Section) or Trigger 1 Filtering (Trigger 1 Section). It's not severe and quite steady but I'm just seeing if any filtering would do any benefit. Nissan RB engine with the affordable NZ Wiring Kit (24-1) reluctor sensor. I understand it's not a high dollar crank/cam trigger setup but again just seeing if any benefits from level 2 filtering. Secondly, what are logging tell tale signs the filtering is helping other then just viewing RPM trace. ROC? Dwell?

The factory Neo uses a MAF sensor. It does not have a MAP sensor. Use the on-board plug&play ecu MAP sensor.

I have no idle control valve on my RB26 ITB engine. Need to implement an idle ignition control 3D table with ECT on the Y axis. Works for me.

Pin#26 is a sensor ground

I have an R32 GTR I am setting up and when I upload either the base map, or another modelled fuel map I have from my other GTR and select "store to ECU" the fuel equation mode goes missing. My VE table and other tables upload fine but the fuel setup page is missing sections. Any help here? It does it even with a base map. See picture of base map before and after storing to ECU

Knock ears and lots of plug reading I guess? o2 sensors for AFR monitoring is a fundamental for building a correct tune. Or like the old school drag guys would do, keep jetting up until the MPH starts to decrease. Same goes for timing but the use of home built knock head phones would be a great tool.

More then you think. Looks like you're located in BC Canada? Get in contact with Independent Speed Shop, Bill can help you.

Have you taken a shot in the dark and tried multiple trigger offset values? Worth a try if you haven't already.

Can you trigger scope around that area? What does your trigger setup page look like? I have used a few of these discs on RBs without problems. Could be the optical sensor is getting weak.