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| Revision as of 00:09, 18 February 2015 ddgonzal (Talk | contribs) (->Wiring) <- Previous diff |
Current revision ddgonzal (Talk | contribs) |
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| - | Buy [[MegaSquirt]] II fully assembled ($400). | + | Buy [[MegaSquirt]] II (or MicroSquirt 2) fully assembled about $400 USD or [http://www.ebay.com.au/sch/i.html?_odkw=Megasquirt+2&_nkw=Microsquirt+2&_sacat=0 $500 AUD off eBay]. |
| - | Obtain an A14 or A15 [[EGI]] factory Datsun fuel injection manifold. Make sure it has: | + | = Manifold and Injectors = |
| - | * factory rising rate regulator and fuel rail | + | Obtain an A14 or A15 [[EGI]] factory Datsun fuel injection manifold. |
| - | * fuel injectors included | + | |
| - | * a throttle body. The Factory one is good for 92 hp | + | |
| - | * the air regulator. It will run without this if you want to hold the throttle open while engine is warming up to 120F/45C | + | |
| + | {{Album|8104}} | ||
| + | |||
| + | Make sure it includes: | ||
| + | * the factory rising rate regulator and fuel rail | ||
| + | * the fuel injectors included | ||
| + | * the factory 2-pin water temp sensor | ||
| + | * the throttle body. The Factory one is good for 92 hp | ||
| + | * the air regulator. It will run without this if you want to hold your foot on the throttle while engine is warming up to 120F/45C | ||
| Everything else may be removed from the manifold. | Everything else may be removed from the manifold. | ||
| * if you remove the EGR passage, fit a blocking plate | * if you remove the EGR passage, fit a blocking plate | ||
| - | * an O2 sensor is not required, | + | * an O2 sensor is not required |
| * TPS is not needed | * TPS is not needed | ||
| Line 18: | Line 23: | ||
| * manifold to MegaSquirt | * manifold to MegaSquirt | ||
| + | = Sensors = | ||
| With MegaSquirt you won't need the Datsun airflow meter. Instead, Megasquirt will calculate the air mass using a MAP sensor and and IAT sensor. | With MegaSquirt you won't need the Datsun airflow meter. Instead, Megasquirt will calculate the air mass using a MAP sensor and and IAT sensor. | ||
| * MAP sensor is built into Megasquirt. Connect vacuum hose to manifold | * MAP sensor is built into Megasquirt. Connect vacuum hose to manifold | ||
| - | * Obtain GM IAT sensor. Drill hole in your air cleaner-to-throttle body pipe, and hot-glue the IAT in place. Or use JB-weld. Threaded bungs are available if you want to get really fancy. | + | * Obtain GM IAT sensor from a Chevrolet or Holden. Drill hole in your air cleaner-to-throttle body pipe, and hot-glue the IAT in place. Or use JB-weld. Threaded bungs are available if you want to get really fancy. |
| - | Use a 280ZX fuel pump, plumbed into the stock fuel line.. Connect the fuel reg output to.a line teed into the filler hose. If you keep the tank above 1/4 full no baffles or surge tank are needed. | + | * [http://www.megamanual.com/v22manual/mwire.htm MegaManual] |
| + | * GM IAT Sensor 12146312 [http://www.rockauto.com/catalog/x,carcode,1038079,parttype,4748 $10 RockAuto.com] | ||
| + | {{PhotoTh!|TS10075A.jpg}} | ||
| + | * GM sensor connector 12162193 [http://www.rockauto.com/catalog/x,carcode,1038079,parttype,2564 $5 RockAuto.com] | ||
| + | {{PhotoTh!|HP3840.jpg}} | ||
| + | |||
| + | = Fuel System = | ||
| + | Use a 280ZX fuel pump (or Walbro inline pump), connected to the stock fuel line coming from the tank. | ||
| + | |||
| + | * 280ZX Fuel Pump [http://www.rockauto.com/catalog/x,carcode,1209338,parttype,6256 $45 RockAuto.com] | ||
| + | |||
| + | Run a regular fuel line back to the the filler hose and Tee it in. If you keep the tank above 1/4 full no baffles or surge tank are needed. | ||
| + | |||
| + | From the fuel pump output to the fuel rail, use EFI-rated fuel hose and EFI hose clamps. Use a 280ZX-style fuel filter. | ||
| + | |||
| + | Nissan EFI fuel pump with damper can be mounted in rear of car or in engine compartment | ||
| + | <br>{{Album|21845}} | ||
| + | |||
| + | 280ZX EFI fuel filter [http://www.rockauto.com/catalog/x,carcode,1209338,parttype,6200 $3 RockAuto.com] | ||
| + | <br>{{PhotoTh!|BA0430165.jpg}} | ||
| = Wiring = | = Wiring = | ||
| Line 35: | Line 60: | ||
| * Tach signal (coil negative terminal) | * Tach signal (coil negative terminal) | ||
| - | Obtain a dropping resistor pack, and splice into injector wires | + | For full details, see http://www.megamanual.com/mtabcon.htm#wire |
| + | |||
| + | Obtain a dropping resistor pack, and connect to injectors | ||
| + | <br>{{Album|21853}} | ||
| + | |||
| + | See main article: [[Dropping_Resistor]] | ||
| + | |||
| + | {{Photo!|DROPPING_RESISTOR.jpg}} | ||
| = ECU Configuration = | = ECU Configuration = | ||
| Line 44: | Line 76: | ||
| You have a choice: | You have a choice: | ||
| - | * TunerStudio free version | + | * TunerStudio free version (most popular software for MegaSquirt) |
| + | *: Free version supports all MegaSquirt features | ||
| * SuperTunix open source | * SuperTunix open source | ||
| Line 97: | Line 130: | ||
| And start tuning. | And start tuning. | ||
| + | |||
| + | A big help in turning is to fit an '''Air Fuel Ratio Gauge'''. MegaSquirt 2 can directly read the wideband output of the wideband controller, but more importantly you can see the A/F Ratio on the gauge. | ||
| + | |||
| + | {{SeeMainArticleP|Oxygen_Sensor|540-3824.jpg|aname=#Air_Fuel_Ratio_Gauge}} | ||
| + | |||
| + | The paid version of TunerStudio has a software auto-tuner which is supposed to be great, but it still requires some work (it's not totally automatic). | ||
| + | |||
| + | [[Category:Fuel_Injection]]{{End}} | ||
Current revision
Buy MegaSquirt II (or MicroSquirt 2) fully assembled about $400 USD or $500 AUD off eBay.
Contents |
Manifold and Injectors
Obtain an A14 or A15 EGI factory Datsun fuel injection manifold.
Make sure it includes:
- the factory rising rate regulator and fuel rail
- the fuel injectors included
- the factory 2-pin water temp sensor
- the throttle body. The Factory one is good for 92 hp
- the air regulator. It will run without this if you want to hold your foot on the throttle while engine is warming up to 120F/45C
Everything else may be removed from the manifold.
- if you remove the EGR passage, fit a blocking plate
- an O2 sensor is not required
- TPS is not needed
the only vacuum hoses needed are
- one to the fuel regulator
- one from the throttle body to the distributor
- manifold to MegaSquirt
Sensors
With MegaSquirt you won't need the Datsun airflow meter. Instead, Megasquirt will calculate the air mass using a MAP sensor and and IAT sensor.
- MAP sensor is built into Megasquirt. Connect vacuum hose to manifold
- Obtain GM IAT sensor from a Chevrolet or Holden. Drill hole in your air cleaner-to-throttle body pipe, and hot-glue the IAT in place. Or use JB-weld. Threaded bungs are available if you want to get really fancy.
* MegaManual * GM IAT Sensor 12146312 $10 RockAuto.com* GM sensor connector 12162193 $5 RockAuto.com
Fuel System
Use a 280ZX fuel pump (or Walbro inline pump), connected to the stock fuel line coming from the tank.
* 280ZX Fuel Pump $45 RockAuto.com
Run a regular fuel line back to the the filler hose and Tee it in. If you keep the tank above 1/4 full no baffles or surge tank are needed.
From the fuel pump output to the fuel rail, use EFI-rated fuel hose and EFI hose clamps. Use a 280ZX-style fuel filter.
Nissan EFI fuel pump with damper can be mounted in rear of car or in engine compartment
280ZX EFI fuel filter $3 RockAuto.com
Wiring
Wire up the MegaSquirt harness
- 12V
- earth/ground
- fuel pump relay
- injectors
- IAT signal & ground/earth
- Air Regulator
- EFI Water Temp
- Tach signal (coil negative terminal)
For full details, see http://www.megamanual.com/mtabcon.htm#wire
Obtain a dropping resistor pack, and connect to injectors
See main article: Dropping_Resistor
ECU Configuration
Download at http://www.diyautotune.com/softwarelinks.htm
- Mac
- Windows
- Linux
You have a choice:
- TunerStudio free version (most popular software for MegaSquirt)
- Free version supports all MegaSquirt features
- SuperTunix open source
In the software configure
Fast Idle Valve (FIdle): Solenoid Fast Idle Threshold: 120F
Nissan temp sensor -40F 30-33000 ohms 80F 2000-2500ohms 160F 360 ohms
CONSTANTS Required Fuel * displacement 1397cc (A14) or 1488cc (A15) * # of cyl 4 * injector flow rate 188 * desired AFR 13 Injector open time 1.0ms batt V correction .20 PWM current limit 1000% PWM time threshold 25.4 Fast Idle Threshold Barometric Correction: Off Control Algorithm: Speed Density [non-TPS] Injections per Engine Cycle: 1 squirt Injector Staging: simultaneous Injector Port Type: multi-port Engine Type: even fire
VE TABLE
Generate a new table based on your peak horsepower and torque figures ('Settings/VE Table/Tools/VE Specific/Generate VETable').
ENRICHMENTS EGO Step (%): 0 Warmup enrichment -40F 180% -20F 150% 0F 140% 20F 135% 40F 130% 60F 125% 80F 118% 100F 110% 130F 103% 160F 100%
Afterstart Enrichment: between 25-45%for 100 to 250 cycles,
Software Tuning
Start your engine and let idle. Go to http://www.megamanual.com/v22manual/mtune.htm
And start tuning.
A big help in turning is to fit an Air Fuel Ratio Gauge. MegaSquirt 2 can directly read the wideband output of the wideband controller, but more importantly you can see the A/F Ratio on the gauge.
See Main Article: Oxygen_Sensor#Air_Fuel_Ratio_Gauge
The paid version of TunerStudio has a software auto-tuner which is supposed to be great, but it still requires some work (it's not totally automatic).