Search found 14 matches

by nickopok
Fri Mar 06, 2020 8:21 am
Forum: Type 2
Topic: 300ZX Z32 - One side richer + knock, long story
Replies: 26
Views: 6614

Re: 300ZX Z32 - One side richer + knock, long story

I see, It will be too complicated for me :) Finally during a trackday the car triggered safety boost after several mid / full load pulls on 3rd gear :x So I'm back to the start or almost. I need to know if the knock is detected only at a specific rpm or on a wider range. If only at a specific rpm li...
by nickopok
Fri Feb 14, 2020 8:42 am
Forum: Type 2
Topic: 300ZX Z32 - One side richer + knock, long story
Replies: 26
Views: 6614

Re: 300ZX Z32 - One side richer + knock, long story

Oh right I forgot interpolation, you are surely right as I didn't found a min value lower than a close cell. Anyway, nothing comparable to when using standard knock cyl values. It seems that few cells of Run2 are lower than Run1 by 1 or 2°, especially in the 2000RPM range. But I don't have enough da...
by nickopok
Wed Feb 12, 2020 7:26 am
Forum: Type 2
Topic: 300ZX Z32 - One side richer + knock, long story
Replies: 26
Views: 6614

Re: 300ZX Z32 - One side richer + knock, long story

Sorry for late reply. Romchip, on the trace selected cell you can see min, max, ave values. For 25 into timing table for TP56, we can see that ECU used 23 to 25. Into the TP64 column, timing is 24 between 2400 and 3200, while on trace, average value is 22.25 to 22.92 Into TP64/2500RPM values are : M...
by nickopok
Tue Feb 04, 2020 8:58 am
Forum: Type 2
Topic: 300ZX Z32 - One side richer + knock, long story
Replies: 26
Views: 6614

Re: 300ZX Z32 - One side richer + knock, long story

Thanks for your feedback Romchip. It seem that my knock occur at the same rpm range, but even with only 60% accel. On your advice I reduced this zone, but without luck. Setting Knock Cyl limit to 90 on the whole range is maybe hardcore as it's x2 to x2.5. I should now refine this setting. From the l...
by nickopok
Mon Feb 03, 2020 5:01 am
Forum: Type 2
Topic: 300ZX Z32 - One side richer + knock, long story
Replies: 26
Views: 6614

Re: 300ZX Z32 - One side richer + knock, long story

I've noted baseline 'noise' knock coming from the knock sensor which is calculated per each cylinder. On top of that baseline the count will increase during the event when knock actually occours. The difference between the baseline 'noise' count and event triggered 'noise' is effectively your per c...
by nickopok
Sun Feb 02, 2020 6:15 am
Forum: Type 2
Topic: 300ZX Z32 - One side richer + knock, long story
Replies: 26
Views: 6614

Re: 300ZX Z32 - One side richer + knock, long story

Thanks for your reply Eric. Yes I had set it few years ago ... from the Cyl1 wire and not PTU loop, if the timing lamp was ok it should be ok. Considering the timing belt is correctly mounted. During the past 10 years I changed it and checked it 2 times, from what I seen it was ok ... About the CAS ...
by nickopok
Mon Jan 20, 2020 8:18 am
Forum: Type 2
Topic: 300ZX Z32 - One side richer + knock, long story
Replies: 26
Views: 6614

Re: 300ZX Z32 - One side richer + knock, long story

Just to give an update, I replaced the injectors by the stock one. With the same K and latency setup I was idling @19-20AFR, so the ebay one was definively richers (at least at idle) Back to stock value give a 13/14 AFR idle. And now both banks have the same AFR. Idle is still not smooth. "Fixe...
by nickopok
Sun Dec 08, 2019 1:01 am
Forum: Type 2
Topic: 300ZX Z32 - One side richer + knock, long story
Replies: 26
Views: 6614

Re: 300ZX Z32 - One side richer + knock, long story

Oh ok I found a small leak on injector #2, on the seal between fuel rail and lower plenum Maybe it could be the cause of idle vibrations. I hope it will be. If I still have vibration with other injector and no leak, I will be worried. By the way, I tested the IACV under pressure, and it let the air ...
by nickopok
Sun Dec 01, 2019 8:14 am
Forum: Type 2
Topic: 300ZX Z32 - One side richer + knock, long story
Replies: 26
Views: 6614

Re: 300ZX Z32 - One side richer + knock, long story

Today I decided to unmount these injectors.
Looking at them closely it look like their are not Nissan refurbished ones :roll:

So I installed my old OEM ones, and tested them for leak with 3bar of air.
Not yet finished reassembly.
injecteurs.jpg
Ebay vs Stock ones
(194.54 KiB) Downloaded 1931 times
by nickopok
Sat Nov 30, 2019 9:28 am
Forum: Type 2
Topic: 300ZX Z32 - One side richer + knock, long story
Replies: 26
Views: 6614

Re: 300ZX Z32 - One side richer + knock, long story

Thanks for the info Matt. They come from here, but bought 9 years ago and old style ('90 connector) : https://www.ebay.com/itm/Fits-Nissan-RB25DET-Set-of-6-370cc-Plug-Play-side-feed-fuel-injectors/133161986712 I had some doubts about them, but now more over with wideband feedback :| I still have my ...
by nickopok
Fri Nov 29, 2019 9:46 am
Forum: Type 2
Topic: 300ZX Z32 - One side richer + knock, long story
Replies: 26
Views: 6614

Re: 300ZX Z32 - One side richer + knock, long story

OEM K is 288 OEM latency is 750us. Your injection pulse @idle is in the range of 2ms. Injector latency is not the problem. Idle should be very smooth. I have reconditionned (tested and balanced) ebay injectors, that are very similar to the stock ones, but with light pink insulation. I agree that th...
by nickopok
Wed Nov 27, 2019 7:30 am
Forum: Type 2
Topic: 300ZX Z32 - One side richer + knock, long story
Replies: 26
Views: 6614

Re: 300ZX Z32 - One side richer + knock, long story

Salut RomChip :) Hum, from what you are telling me, I have a doubt about the Rom file I was really using. I got this ROM from a friend, who told me he had JWT chip... :roll: One the Dyno I was using the "JWT" Rom chip, but Nistune log has been made with the stock base map with K set @280, ...
by nickopok
Tue Nov 26, 2019 2:40 am
Forum: Type 2
Topic: 300ZX Z32 - One side richer + knock, long story
Replies: 26
Views: 6614

300ZX Z32 - One side richer + knock, long story

Hi, have this 300ZX for 10 years now, engine has been totally rebuilt in 2009. I'm hunting for a safety mode due to knock since the engine has been rebuild. Tested all things that I could test, fixed some leaks, but the safety mode always come back. The car is pretty stock except 14PSI, downpipes, A...
by nickopok
Sun Nov 24, 2019 9:56 am
Forum: Others
Topic: Datalogging 10 bit stream
Replies: 33
Views: 42783

Re: Datalogging 10 bit stream

If like me you have the nice idea to use Arduino Micro for wideband monitoring, because it's small and easy to hide in a car... You will have to do this fix in order to get Nistune reading the serial reply. :evil: You can solve the DTR Problem by editing "Arduino\hardware\arduino\cores\arduino\...