Z31/ECUdifferences php - Revision history

XenonzcarImporter: Rewrite 3 archive URL(s) to internal wikilinks

2026-05-17T01:59:26Z

Rewrite 3 archive URL(s) to internal wikilinks

← Older revision		Revision as of 01:59, 17 May 2026
Line 56:		Line 56:

	'''High impedance ECU with low impedance injectors:''' You must install six 6–10Ω 10W		'''High impedance ECU with low impedance injectors:''' You must install six 6–10Ω 10W
	[~~https://dev.z31library.com/xenonzcar_archive/z31~~/droppingresistors~~.php~~ dropping resistors]		[[Z31/droppingresistors\|dropping resistors]]
	to avoid damaging the injector drivers. If you add dropping resistors, the fuel injectors must be		to avoid damaging the injector drivers. If you add dropping resistors, the fuel injectors must be
	[~~https://dev.z31library.com/xenonzcar_archive/z31~~/Rewirefuelinjectors.php rewired to factory spec] (pre-service campaign).		[[Z31/Rewirefuelinjectors php\|rewired to factory spec]] (pre-service campaign).

	'''Low impedance ECU driving high impedance injectors:''' This setup should operate normally.		'''Low impedance ECU driving high impedance injectors:''' This setup should operate normally.
Line 225:		Line 225:
	=== Sources Used ===		=== Sources Used ===

	[~~https://dev.z31library.com/xenonzcar_archive/z31~~/z31fsm.php 1984-1988 Nissan 300ZX Factory Service Manual]		[[Z31/z31fsm php\|1984-1988 Nissan 300ZX Factory Service Manual]]
	* Z31 parts Fiche		* Z31 parts Fiche
	* redz31.net (Jason Butts)		* redz31.net (Jason Butts)

XenonzcarImporter: Fix: convert markdown link syntax to wiki syntax; remove broken self-anchor links

2026-05-16T23:33:19Z

Fix: convert markdown link syntax to wiki syntax; remove broken self-anchor links

← Older revision		Revision as of 23:33, 16 May 2026
Line 49:		Line 49:
	There is absolutely '''no difference''' between a regular 1988 Turbo ECU and an “88SS” ECU. The “88 Shiro” branding is purely marketing and does not affect performance.		There is absolutely '''no difference''' between a regular 1988 Turbo ECU and an “88SS” ECU. The “88 Shiro” branding is purely marketing and does not affect performance.

	![~~Top Feed Fuel Injectors](~~https://dev.z31library.com/xenonzcar_archive/z31/images/Fuel ~~Injectors~~/TopFeed.jpg)		![https://dev.z31library.com/xenonzcar_archive/z31/images/Fuel%20Injectors/TopFeed.jpg Top Feed Fuel Injectors]

	![~~Side Feed Fuel Injectors](~~https://dev.z31library.com/xenonzcar_archive/z31/images/Fuel ~~Injectors~~/SideFeed.jpg)		![https://dev.z31library.com/xenonzcar_archive/z31/images/Fuel%20Injectors/SideFeed.jpg Side Feed Fuel Injectors]

	'''NA injectors:'''~180cc/min'''Turbo injectors:'''~260cc/min- ECUs are programmed accordingly.		'''NA injectors:'''~180cc/min'''Turbo injectors:'''~260cc/min- ECUs are programmed accordingly.

XenonzcarImporter: Reformat: split adjacent link runs into bulleted lists

2026-05-16T21:29:47Z

Reformat: split adjacent link runs into bulleted lists

← Older revision		Revision as of 21:29, 16 May 2026
Line 225:		Line 225:
	=== Sources Used ===		=== Sources Used ===

	[https://dev.z31library.com/xenonzcar_archive/z31/z31fsm.php 1984-1988 Nissan 300ZX Factory Service Manual]- Z31 parts Fiche		[https://dev.z31library.com/xenonzcar_archive/z31/z31fsm.php 1984-1988 Nissan 300ZX Factory Service Manual]
			* Z31 parts Fiche
	* redz31.net (Jason Butts)		* redz31.net (Jason Butts)
	* Euro and JDM ECU part numbers researched by: NissanEgg of Z31performance.com		* Euro and JDM ECU part numbers researched by: NissanEgg of Z31performance.com

	[[Category:Imported from Xenonzcar]]		[[Category:Imported from Xenonzcar]]

XenonzcarImporter: Inline image refs: rewrite to local archive; clean empty image artifacts

2026-05-16T18:01:24Z

Inline image refs: rewrite to local archive; clean empty image artifacts

← Older revision		Revision as of 18:01, 16 May 2026
Line 1:		Line 1:
	{{ImportedFrom\|site=Xenonzcar\|title=Z31 Fuel Injector, ECU and O2 sensor and Interchange Information\|url=~~http~~://~~www~~.~~xenonzcar~~.com/z31/ECUdifferences.php.html\|archive=https://dev.z31library.com/xenonzcar_archive/z31/ECUdifferences.php.html\|fetched=2026-05-15}}		{{ImportedFrom\|site=Xenonzcar\|title=Z31 Fuel Injector, ECU and O2 sensor and Interchange Information\|url=https://dev.z31library.com/xenonzcar_archive/z31/ECUdifferences.php.html\|archive=https://dev.z31library.com/xenonzcar_archive/z31/ECUdifferences.php.html\|fetched=2026-05-15}}

	== Z31 Fuel Injector, ECU and O2 sensor and Interchange Information ==		== Z31 Fuel Injector, ECU and O2 sensor and Interchange Information ==
Line 22:		Line 22:
	=== ECCS Location ===		=== ECCS Location ===

	~~[http~~://~~xenonzcar~~.com/2025siteimages/ECUlocation.gif ~~image: ECU Location]~~		https://dev.z31library.com/xenonzcar_archive/2025siteimages/ECUlocation.gif

	The ECCS or Computer for the Z31 is located behind the passenger's kick panel. This is the small panel on the outer wall right below the glovebox. You will need to remove 2 screws to get the panel off.		The ECCS or Computer for the Z31 is located behind the passenger's kick panel. This is the small panel on the outer wall right below the glovebox. You will need to remove 2 screws to get the panel off.
Line 33:		Line 33:
	ECU can have a NMC number or a JECS number the numbers are listed as NMC/JECS these are interchangeable.		ECU can have a NMC number or a JECS number the numbers are listed as NMC/JECS these are interchangeable.

	~~[http~~://~~xenonzcar~~.com/z31/images/ECU/ECCU1.png ~~image: ECCU]~~		https://dev.z31library.com/xenonzcar_archive/z31/images/ECU/ECCU1.png

	=== Non USDM ECUs ===		=== Non USDM ECUs ===
Line 49:		Line 49:
	There is absolutely '''no difference''' between a regular 1988 Turbo ECU and an “88SS” ECU. The “88 Shiro” branding is purely marketing and does not affect performance.		There is absolutely '''no difference''' between a regular 1988 Turbo ECU and an “88SS” ECU. The “88 Shiro” branding is purely marketing and does not affect performance.

	![Top Feed Fuel Injectors](~~http~~://~~www~~.~~xenonzcar~~.com/z31/images/Fuel Injectors/TopFeed.jpg)		![Top Feed Fuel Injectors](https://dev.z31library.com/xenonzcar_archive/z31/images/Fuel Injectors/TopFeed.jpg)

	![Side Feed Fuel Injectors](~~http~~://~~www~~.~~xenonzcar~~.com/z31/images/Fuel Injectors/SideFeed.jpg)		![Side Feed Fuel Injectors](https://dev.z31library.com/xenonzcar_archive/z31/images/Fuel Injectors/SideFeed.jpg)

	'''NA injectors:'''~180cc/min'''Turbo injectors:'''~260cc/min- ECUs are programmed accordingly.		'''NA injectors:'''~180cc/min'''Turbo injectors:'''~260cc/min- ECUs are programmed accordingly.

	'''High impedance ECU with low impedance injectors:''' You must install six 6–10Ω 10W		'''High impedance ECU with low impedance injectors:''' You must install six 6–10Ω 10W
	[~~http~~://~~www~~.~~xenonzcar~~.com/z31/droppingresistors.php dropping resistors]		[https://dev.z31library.com/xenonzcar_archive/z31/droppingresistors.php dropping resistors]
	to avoid damaging the injector drivers. If you add dropping resistors, the fuel injectors must be		to avoid damaging the injector drivers. If you add dropping resistors, the fuel injectors must be
	[~~http~~://~~xenonzcar~~.com/z31/Rewirefuelinjectors.php rewired to factory spec] (pre-service campaign).		[https://dev.z31library.com/xenonzcar_archive/z31/Rewirefuelinjectors.php rewired to factory spec] (pre-service campaign).

	'''Low impedance ECU driving high impedance injectors:''' This setup should operate normally.		'''Low impedance ECU driving high impedance injectors:''' This setup should operate normally.
Line 225:		Line 225:
	=== Sources Used ===		=== Sources Used ===

	[~~http~~://~~www~~.~~xenonzcar~~.com/z31/z31fsm.php 1984-1988 Nissan 300ZX Factory Service Manual]- Z31 parts Fiche		[https://dev.z31library.com/xenonzcar_archive/z31/z31fsm.php 1984-1988 Nissan 300ZX Factory Service Manual]- Z31 parts Fiche
	* redz31.net (Jason Butts)		* redz31.net (Jason Butts)
	* Euro and JDM ECU part numbers researched by: NissanEgg of Z31performance.com		* Euro and JDM ECU part numbers researched by: NissanEgg of Z31performance.com

	[[Category:Imported from Xenonzcar]]		[[Category:Imported from Xenonzcar]]

XenonzcarImporter: XenonzcarImporter moved page Sites/Xenonzcar/z31/ECUdifferences php to Z31/ECUdifferences php without leaving a redirect: Flatten Sites/ namespace; provenance preserved via ImportedFrom banner

2026-05-16T06:38:36Z

XenonzcarImporter moved page Sites/Xenonzcar/z31/ECUdifferences php to Z31/ECUdifferences php without leaving a redirect: Flatten Sites/ namespace; provenance preserved via ImportedFrom banner

← Older revision	Revision as of 06:38, 16 May 2026
(No difference)

XenonzcarImporter: Site import

2026-05-16T06:26:38Z

Site import

New page

{{ImportedFrom|site=Xenonzcar|title=Z31 Fuel Injector, ECU and O2 sensor and Interchange Information|url=http://www.xenonzcar.com/z31/ECUdifferences.php.html|archive=https://dev.z31library.com/xenonzcar_archive/z31/ECUdifferences.php.html|fetched=2026-05-15}}

== Z31 Fuel Injector, ECU and O2 sensor and Interchange Information ==

This information has been put together for ECU/injector/O2 sensor interchange information. This should be particularly useful for those swapping an 88-89 ECU into their car. As these are the only major differences in the Z31's stock engine management, this should be what you need to figure out if a particular configuration will work for you.

=== Z31 Engine Control Computer System (ECCS) Interchange Information ===

| Year(s) | Type | Fuel Injector Impedance | Fuel Injector Feed Style | Oxygen Sensor Type | Oxygen Sensor Part Number |
|---|---|---|---|---|---|
| 84–85 | Non-Turbo | Low | Top-Feed | Zirconium | 22690-09P01 |
| 84–85 | Turbo | Low | Top-Feed | Zirconium | 22690-12P01 |
| 86 | Non-Turbo | Low | Top-Feed | Titania | 22690-19P40 |
| 86 | Turbo | Low | Side / Dual-Feed | Titania | 22690-19P20 |
| 87 | Non-Turbo | Low | Side / Dual-Feed | Zirconium | 22690-09P01 |
| 87 | Turbo | Low | Side / Dual-Feed | Titania | 22690-21P11 |
| 88–89 | Non-Turbo | High | Side / Dual-Feed | Zirconium | 22690-09P01 |
| 88–89 | Turbo | High | Side / Dual-Feed | Titania | 22690-21P11 |

Note: This chart applies to U.S.-market Z31 models only. Verify part numbers before purchase.

=== ECCS Location ===

[http://xenonzcar.com/2025siteimages/ECUlocation.gif image: ECU Location]

The ECCS or Computer for the Z31 is located behind the passenger's kick panel. This is the small panel on the outer wall right below the glovebox. You will need to remove 2 screws to get the panel off.

There are three connectors that plug into the ECCM. These connections can sometimes corrode and cause Driveability issues. Cleaning these will resolve some problems but sometimes for Diagnostic procedures you will need to check the pinout on sensors.

=== ECU Lookup ===

To lookup your ECU or interchange for ECU, O2 sensors, or Fuel Injectors, complete one of the search boxes and click submit.
ECU can have a NMC number or a JECS number the numbers are listed as NMC/JECS these are interchangeable.

[http://xenonzcar.com/z31/images/ECU/ECCU1.png image: ECCU]

=== Non USDM ECUs ===

If your ECU is not listed you will have a Euro Or JDM ECU.

Below is a chart of these ECUs

If it has an alternate part number, that means the part interchanges between the two and vice versa.

These numbers are strictly pulled from the Euro and JDM FAST parts catalogs. It does not list the JECS number, only the Nissan part number.

=== ECU/Fuel Injector/O2 Sensor Interchange Information ===

There is absolutely '''no difference''' between a regular 1988 Turbo ECU and an “88SS” ECU. The “88 Shiro” branding is purely marketing and does not affect performance.

![Top Feed Fuel Injectors](http://www.xenonzcar.com/z31/images/Fuel Injectors/TopFeed.jpg)

![Side Feed Fuel Injectors](http://www.xenonzcar.com/z31/images/Fuel Injectors/SideFeed.jpg)

'''NA injectors:'''~180cc/min'''Turbo injectors:'''~260cc/min- ECUs are programmed accordingly.

'''High impedance ECU with low impedance injectors:''' You must install six 6–10Ω 10W
[http://www.xenonzcar.com/z31/droppingresistors.php dropping resistors]
to avoid damaging the injector drivers. If you add dropping resistors, the fuel injectors must be
[http://xenonzcar.com/z31/Rewirefuelinjectors.php rewired to factory spec] (pre-service campaign).

'''Low impedance ECU driving high impedance injectors:''' This setup should operate normally.

Feed type does not matter to the ECU. What matters are impedance and flow rating. However, the lower intake manifolds differ; you may need to shave or shim the injector mounting area if swapping between types.

==== Oxygen Sensors ====

'''Titania'''and'''Zirconium'''sensors are not interchangeable.- Zirconium sensors output a
'''0–1V signal'''. - Titania sensors vary resistance for ECU feedback.

To use an 86–89T ECU with a different sensor type, you must rewire the harness and change the O2 sensor bung (Titania = 17mm, Zirconium = 22mm).

==== ECU Interchange Notes ====

'''California and Federal ECUs:'''Fully interchangeable. CAL units include an EGT sensor.'''88–89 ECUs:'''PROM chips are swappable between NA and Turbo models. This allows you to use a Zirconium sensor with an NA ECU by installing the Turbo PROM.'''Turbo ECUs:'''Feature a detonation sensor daughter-board (NA ECUs do not).'''Idle control:'''Turbo and NA use different systems, but cars can run fine with idle devices removed.

==== Additional Technical Notes ====

* 88–89 Turbo ECUs use a timing map optimized for the smaller T25 turbo at 4–5 PSI boost.
* 84–85 ECUs (all) may have a slight lean surge during cold start (first 30 seconds). Switching from CHTS to FTS during startup can fix this.

=== JDM Z31 ECU part numbers ===

Part Number |
Date Range |
Engine |
Transmission |
Alt Part Number |
12P01 |
9/83 - 10/86 |
VG20ET |
5 speed manual |
N/A |
12P11 |
9/83 - 10/86 |
VG20ET |
Automatic |
N/A |
15P00 |
9/83 - 10/86 |
VG30ET |
5 speed manual |
N/A |
15P10 |
9/83 - 10/86 |
VG30ET |
Automatic |
N/A |
20P01 |
10/85 - 10/86 |
RB20DET |
??? |
N/A |
20P60 |
10/86 - 7/87 |
RB20DET |
5 speed manual |
20P61 |
20P61 |
7/87 - END |
RB20DET |
5 speed manual |
N/A |
20P70 |
10/86 - 8/87 |
RB20DET |
Automatic |
20P71 |
20P71 |
8/87 - END |
RB20DET |
Automatic |
N/A |
22P00 |
10/86 - 7/87 |
VG30DE |
5 speed manual |
22P01 |
22P01 |
7/87 - END |
VG30DE |
5 speed manual |
N/A |
22P10 |
10/86 - 8/87 |
VG30DE |
Automatic |
22P11 |
22P11 |
8/87 - END |
VG30DE |
Automatic |
N/A |
22P72 |
10/86 - END |
VG30ET |
Automatic |
N/A |

=== EURO Z31 ECU part numbers ===

Part Number |
Date Range |
Engine |
Transmission |
Alt Part Number |
Country |
06P00 |
1/84 - 7/85 |
VG30E |
5 Speed Manual |
06P01 |
N/A |
06P01 |
7/85 - END |
VG30E |
5 Speed Manual |
N/A |
N/A |
06P05 |
1/84 - 7/85 |
VG30E |
5 Speed Manual |
N/A |
Switzerland/Sweden |
06P06 |
7/85 - 2/87 |
VG30E |
5 Speed Manual |
N/A |
Switzerland/Sweden |
06P10 |
1/84 - 7/85 |
VG30E |
Automatic |
06P11 |
N/A |
06P11 |
7/85 - END |
VG30E |
Automatic |
N/A |
N/A |
06P16 |
7/85 - 2/87 |
VG30E |
Automatic |
N/A |
Switzerland/Sweden w/anti-pollution controls |
07P00 |
1/84 - END |
VG30ET |
??? |
N/A |
NOTE 1 |
23P00 |
2/87 - END |
VG30ET |
??? |
N/A |
NOTE 2 |

'''Europe had different emission standards for different countries at the time, hence the difference in part numbers for countries'''

=== Sources Used ===

[http://www.xenonzcar.com/z31/z31fsm.php 1984-1988 Nissan 300ZX Factory Service Manual]- Z31 parts Fiche
* redz31.net (Jason Butts)
* Euro and JDM ECU part numbers researched by: NissanEgg of Z31performance.com

[[Category:Imported from Xenonzcar]]