Nistune Forums

Matt wrote:So you now have orange sticker n62 maf? Post your current tune here

yes. I have borrowed from a friend to try, but the results were even worse.

Yes, use the "N62" Z32 MAF. These are good and common.

- make sure it's wired correctly (should see about 1.0 to 1.2V MAF voltage at idle)


Then in NIStune:

- turn IGN on (don't start engine) and connect to NIStune.
- check that there are no fault codes present. Important!
- sync tune from ECU > NIStune (downloads maps from ECU to NIStune).
- change MAF in NIStune from stock to Z32.
- re-size injectors in NIStune from 370cc to 550cc.
- sync tune from NIStune to ECU and then hit "burn".
- start engine and see if AFR's are good.
- check again for fault codes. Some only show after engine is started.

If it's too rich/lean then adjust K constant until mixtures are good.

That should get it roughly correct. Your injectors may not be 550cc, so don't worry if you need to adjust K constant manually to get it right.

PL

PL wrote:Yes, use the "N62" Z32 MAF. These are good and common.

- make sure it's wired correctly (should see about 1.0 to 1.2V MAF voltage at idle)


Then in NIStune:

- turn IGN on (don't start engine) and connect to NIStune.
- check that there are no fault codes present. Important!
- sync tune from ECU > NIStune (downloads maps from ECU to NIStune).
- change MAF in NIStune from stock to Z32.
- re-size injectors in NIStune from 370cc to 550cc.
- sync tune from NIStune to ECU and then hit "burn".
- start engine and see if AFR's are good.
- check again for fault codes. Some only show after engine is started.

If it's too rich/lean then adjust K constant until mixtures are good.

That should get it roughly correct. Your injectors may not be 550cc, so don't worry if you need to adjust K constant manually to get it right.

PL

that's what I did in this manual, but the engine did not become better, I did have such suspicions that a fault in the engine, as the settings can hardly improve its performance.

Is fuel pressure OK?

PL

Post the tune here since I want to see what state it is in

PL wrote:Is fuel pressure OK?

PL

fuel pressure is ok, 3bar

How come your O2 sensor signal showing 1.72V ? refer to your photo.

louiswun wrote:How come your O2 sensor signal showing 1.72V ? refer to your photo.

a signal from a broadband sensor, I have not corrected.

Hello. How can I bring these values ​​into the program?
afh90-02 ,
V / Hz
5.00 1741.77
4.91 1741.37
4.64 1474.93
4.45 1302.04
4.25 1145.05
4.06 1002.62
3.86 873.48
3.67 756.56
3.47 650.81
3.27 555.31
3.08 469.26
2.88 391.91
2.74 339.24
2.59 290.89
2.44 247.20
2.30 209.62
2.15 177.03
2.00 148.73
1.86 124.12
1.71 102.72
1.56 84.04
1.42 67.80
1.27 53.63
1.12 41.41
0.98 30.83
0.86 23.23
0.73 16.66
0.64 12.94
0.56 11.08
0.00 0.00

tr0jan wrote:

louiswun wrote:How come your O2 sensor signal showing 1.72V ? refer to your photo.

a signal from a broadband sensor, I have not corrected.

A stock ECU should only see 0-1V O2 signal, if you connect the wideband 0-5V signal to your ecu, the AFR will be mess up.
Did you tried disconnect the O2 signal to your ECU ?

louiswun wrote:

tr0jan wrote:

louiswun wrote:How come your O2 sensor signal showing 1.72V ? refer to your photo.

a signal from a broadband sensor, I have not corrected.

A stock ECU should only see 0-1V O2 signal, if you connect the wideband 0-5V signal to your ecu, the AFR will be mess up.
Did you tried disconnect the O2 signal to your ECU ?

adjustment of the sensor is disabled by software.

When you make changes to your tune - does it say 'Uploaded XXXX: XX' at the bottom of the screen?

Does nistune show ECU ID: 23710-xxxxx (FACTORY) or REV: xx at top of the screen. I dont think your board is installed properly into your ECU and it is using factory settings

Matt wrote:When you make changes to your tune - does it say 'Uploaded XXXX: XX' at the bottom of the screen?

Does nistune show ECU ID: 23710-xxxxx (FACTORY) or REV: xx at top of the screen. I dont think your board is installed properly into your ECU and it is using factory settings