Nistune Forums

Same remark. Color gradient of the map vs. Trail color.

The problem with latency is it's an incompressible value added to the inj pulse width.
If too high, it may jeopardize AFR (too rich) when cruising at very low TP (barely touching the throttle)

I'm still on it. In my case, I need a 2ms crank pulse above 60°C but the ECU does not apply it correctly. The problem is with 2ms, there's no room to decrease it stepwise with a step of 1ms (OEM does it from 4ms ... 3ms ... 2ms ... fire ....) I need to decipher the formula that decreases the crank p...

Not exactly. When start key on, the initial crank pulse is used (according to engine temp initial) and then decreased stepwise. If you start with 12ms and RPM don’t rise, the ECU will decrease it stepwise, 12 10 8 6 …. till a certain point. When warm and big injectors (my case), I start with 2ms pul...

RAM2:1432 warmup_counter: rmb 1 ; ...

Starts to count from 0 as soon you kick in the starter.

Warm crank phase 2: switch to TP-based injection map, 5.76ms injector pulse, RPM die !!! unable to start ( 2 attempts)

BEFORE: 740cc Deatschwerks (370cc redrilled) E85 for 8 years Never had crank issues in all engine conditions from very cold (-10°C) to very hot (100°C)  CRANK_ENRICH 120 120 75 65 50 40 22 12 10 8 8 8 8 8 8 8 AFTER_START_ENRICH 200 200 200 140 125 110 90 70 55 45 35 30 30 30 30 30 (yes, 30 when hig...

Any FKM or Vuiton o-ring resists ethanol. All decent injectors o-rings are FKM material. OEM FPR is questionnable (body seal will leak after a while), but I switched to VAG FPR with FKM o-rings. Take Gates fuel injection hose and any E85 compatible fuel pump (resin turbine). I run E85 since 14 years.

I had ~740cc from DW (370cc purple redrilled) and fitted yellow 750cc few days ago. 1120us (0x70) is the value for me (E85), anything lower and it makes the idle rough (AFR 20) and would jeopardize the fuel map (especially the values when cruising and the transition from low TP to mid TP) Take the i...

I can help you to tune it correctly (the "good practices")
_log TP (Load index = MSB) instead of TP (Load)

Few remarks:
_too rich, at idle and on boost (TP=14 @idle is wrong)
_TP scales need to be scaled correctly

Which equipment do you use to measure AFR ?

No , I didn't. From experience (since 2007), I trust the values. In my case, they are informative only, this allows to highlight disruptions in ethanol content between the seasons and fuel suppliers. For example, in winter "Carrefour" got 62% (so richer) when others are still at 65%. At th...

I have tried 2 sensors in my life, the huge version (like yours) and the tiny version which is an unbranded item btw (currently installed in my 300zx since 3 years) Both works the same. You need a constant flow through the sensor to get accurate readings, sensor being fitted to the return line to th...

Taking into account the interpolation, I see no problem regarding the timing values reported. I partially trust the min/max values because of the transitional effects and interpolation: when you floor the throttle, you move quickly across the cells and the ignition timing reported is close to the cu...

I don't see any retard in your screenshots. Remember the timing is interpolated on 4 cells and your trace screenshots inherited from the TP scale of the fuel map (bug in Nistune !?). Timing map has different TP scale. Your average values look ok. When I had retarded timing in the 2500rpm/TP56 area, ...

14-15 AFR looks ok for TP=40/52, you are still in closed loop up to 3000rpm. But but you have to reach 13.5 AFR very quickly for TP going beyond 52 Few years ago, I had an area where knock was detected. It was only 1-2 degrees but annoying enough because it affected my consecutive pulls, and my timi...