Search found 36 matches

by mtnickel
Thu Jul 30, 2020 9:15 am
Forum: Type 1
Topic: New User - few (tons) of Questions on CA18DET EDM ECU
Replies: 39
Views: 14483

Re: New User - few (tons) of Questions on CA18DET EDM ECU

1) Long Term Fuel Trim - Is there any on the CA18DET ECU? It's not visible in the Parameters and from some logs i couldnt tell that there is any long Term adaption or is it just missing in the Adress File? Matt can chime in here, but it's likely these don't store long term trims (and if they do, th...
by mtnickel
Thu Jul 30, 2020 4:12 am
Forum: Type 1
Topic: New User - few (tons) of Questions on CA18DET EDM ECU
Replies: 39
Views: 14483

Re: New User - few (tons) of Questions on CA18DET EDM ECU

It helps often to have your Calibration/rom file posted (particularly, the one used for the log taken). Posting the raw log will help too. Nissan ECU's (at least type 2 that I know), do some different things around idle. I believe they use different trimming techniques...my z32 ecu for example shows...
by mtnickel
Wed Jul 29, 2020 4:12 pm
Forum: Type 2
Topic: Rich Throttle Transistion
Replies: 17
Views: 7327

Re: Rich Throttle Transistion

Hardware limit may be a no go...deep diving in the nistune forums, I think Matt mentioned the Z32 ecu limits pulse width to 1.5ms if below a certain throttle position. Probably will cause more troubles than it's worth. I'm going to bust out my ostrich emulator and try a different (non-feature pack) ...
by mtnickel
Tue Jul 28, 2020 3:23 pm
Forum: Type 2
Topic: Rich Throttle Transistion
Replies: 17
Views: 7327

Re: Rich Throttle Transistion

If your VTC is erratic, you could try the Z32 handling of it. Set Recover RPM to be ABOVE the Cut point (in z32 it's 6100, but it doesn't matter...could be 7000 or whatever). In this way, it will operate based on load > load enable AND RPM less than Cut point. Any logs of your ECU holding onto Close...
by mtnickel
Tue Jul 28, 2020 11:41 am
Forum: Type 2
Topic: Rich Throttle Transistion
Replies: 17
Views: 7327

Re: Rich Throttle Transistion

Post your current tune, and a log. Also let me know what TP you hit for just atmospheric pressure.
by mtnickel
Tue Jul 28, 2020 3:44 am
Forum: Type 2
Topic: Rich Throttle Transistion
Replies: 17
Views: 7327

Re: Rich Throttle Transistion

Few tests ran: 1) Tried all the Sync acceleration tables and none seemed to do anything to tip in (Temp based, RPM based...all had no effect). 2) I was also going to try the "warm-up enrichment" as you did where you changed mid log and observed changes. I however was unable to disable clos...
by mtnickel
Sun Jul 26, 2020 5:29 am
Forum: Type 2
Topic: Rich Throttle Transistion
Replies: 17
Views: 7327

Re: Rich Throttle Transistion

Had a look at the tune and I notice that K is stock, but scales changed from ... 96 to 115. What you could do is deduce K constant by about 20% to lower the load, increase TIM by 20% to offset fueling change, and keep the factory load scales I opted to keep K stock so that I wouldn't have to adjust...
by mtnickel
Fri Jul 24, 2020 4:27 pm
Forum: Type 2
Topic: Rich Throttle Transistion
Replies: 17
Views: 7327

Re: Rich Throttle Transistion

one more with the cold start tip-in enrichment:
RichColdStart2.png
(492.77 KiB) Downloaded 1394 times
by mtnickel
Fri Jul 24, 2020 4:03 pm
Forum: Type 2
Topic: Rich Throttle Transistion
Replies: 17
Views: 7327

Re: Rich Throttle Transistion

Here's a log of mine: TipInIssue.png If I sweep same fuel area but TPS not changing, then AFR is fine. I've also discovered it seems like its an additive fuel that decays over time. Also, I made the last column 10 to see if lowering that column would reduce fuel. I'm wondering if my only solution he...
by mtnickel
Fri Jul 24, 2020 8:39 am
Forum: Type 2
Topic: Rich Throttle Transistion
Replies: 17
Views: 7327

Re: Rich Throttle Transistion

I have a similar setup with similar problems: RB25Det Z32 ECU Feature Pack 1 Z32 Maf 650cc injectors I have the throttle enrichment table totally disabled (255). If i stab at the throttle, AFR will dip to low 10's (sometimes high 9). It doesn't appear to be a faux spike in TP either. I will have to ...
by mtnickel
Thu Jun 27, 2019 11:26 am
Forum: Type 2
Topic: E85 maps Activation
Replies: 14
Views: 7055

Re: E85 maps Activation

Any update on the possibility of only negating fuel OR ignition? I'm in the same boat with methanol injection that it'd be nice to be able to cut fuel and add timing. For type 2 z32 ECU. Seems like it'd be a trivial mod, though I'm guessing it might require a new base image programmed? If not, it's ...
by mtnickel
Thu May 09, 2019 11:34 am
Forum: Software Enhancements
Topic: Auto rescaling not just scalers but also maps
Replies: 24
Views: 17689

Re: Auto rescaling not just scalers but also maps

My R34 with such a high TP ran so crap, that I have up using HPX back before working on feature pack. I did not code TIM for the injectors (no one was really running 1000CC five years ago) but for the HPX MAF support. Once I could pull K constant (and TP) lower, then the ECU started 'behaving' Were...
by mtnickel
Thu May 09, 2019 11:26 am
Forum: Software Enhancements
Topic: Auto rescaling not just scalers but also maps
Replies: 24
Views: 17689

Re: Auto rescaling not just scalers but also maps

To continue this discussion: - The Limitation on the R34 not allowing TP higher than 255 may be the first legitimate reason I've seen for not performing a rescaling the way we are suggesting. - The limitation of the S13 not being able to set a K constant high enough would also be a limitation. It sh...
by mtnickel
Wed May 08, 2019 2:37 am
Forum: Type 2
Topic: Stalling under deceleration
Replies: 12
Views: 8128

Re: Stalling under deceleration

To add to this discussion, For cars without a speed control, the cut/recover is a bit wonky. When rolling to a stop while on DECEL and engine braking, the ECU is expecting the revs to drop a lot faster since it thinks the car is speed 0 or in neutral. It in turn adjusts the Idle valve to keep cuttin...
by mtnickel
Thu Mar 01, 2018 6:03 pm
Forum: Type 2
Topic: Choosing base image for z32-rb25
Replies: 3
Views: 1664

Re: Choosing base image for z32-rb25

Is that image any different than the z32 41P0F image?

Also, is there a change log for all the rb25 map revisions. Is it mostly to have it operate better on stock rb25 maf and injectors?

Mark.