Triggers - Wiring in G3 on Nissan E15et

[Daniel McIntyre]

I'm finally getting to the end of my little project and going to start wiring my computer over the next couple of months. It's a link computer g3. Turns out it's been so long since I bought it there's a new model. I'll be running group fire injection in 2 sets of 2 and wasted spark. The sensing gear for our standard engines being in the dizzy. My question here is in regards to triggers it refers to using 2 sensors a cam and a crank angle sensor. I thought the engine used hall effect sensors but only as a cam angle sensor. Do I need to set up some another form of optic or magnetic sensor on the crank or will the standard sensor do the job..??

[Simon]

If you have the conventional Nissan trigger wheel in the dissy (360 slots and 4 slots) then this is all you require.

[Daniel McIntyre]

Sorry to raise this from the dead It's been nearly exactly a year since I last asked some questions. The engine is now together and has been run in as standard. I am now actually starting to wire in the computer and get the setup together. I am having a bit of trouble on a couple of things and don't seem to be able to get a straight answer. This is how I see it but I'd appreciate your thoughts. Engine: Nissan E15et 1.5 Sohc Turbo upgraded to GT3076R ECU: Link G3 Igntion Mode: Wasted Spark using 2 v6 commodore dual post coils using 2 Ign outputs - Link 2 channel ignitor Injection Mode: Group in 2 batches seperated over the 2 inj outputs Ign 3 - Ign 4 - Aux 1 - Idle speed solenoid nissan Aux 2 - Tachometer Aux 3 - Aux 4 - Used as DI Aux 5 - Electronic Boost Control - link supplied solenoid Aux 6 - Engine Coolant Fan Relay Aux 7 - Intercooler Fan Relay Aux 8 - Fuel Pump Relay DI - Clutch switch - Launch control/Flatshift Volt 1 - Volt 2 - Temp 1 - Air intake sensor - bosch unit purchased with ecu, o-ring type Temp 2 - Engine coolant temp - Standard nissan sensor Load Input - TPS - Sensor?? Trig 1 - Nissan CAS Trig 2 - Nissan CAS The questions I have are: 1. Will the commodore coils be appropriate for this type of use, I can get much newer ones than say a mitsi twin post or a subi one that the posts face opposing directions and won't look tidy. 2. What are your recommendations on the ecu it is a LEM g3 I bought in 07 (these projects take longer than expected) if I upgrade the firmware what else do I get? What approximate cost am I looking at? 3. Can I still download a version of PC Link that will work 4. I know that the ECU can handle low or high impedance I had heard talk of low impedance injectors run through balast resistors being hard to tune. I have calculated I'd be looking for 550cc injectors which I should be able to get as high impedance. What is best? 5. O2 sensors I have the one fitted to the car that I assume is narrow band. If I'm getting this tuned professionally is there any point in wiring this up. Is there any advantage to going to a wideband and if so what? 6. The stock nissan E15et sensor is a simple on off idle type TPS. What would you recommend to use for this application. Something that bolts up would be nice. What I'm looking for is what will work and what is easiest to tune as I don't want to tow it to a dyno for someone to look under the bonnet and say it won't work. I just want to make sure I understand and am making all the right decisions. Appreciate your assistance. Cheers, Dan P.S. Sorry for the novel

[Jurgen Biggelaar]

1. Will the commodore coils be appropriate for this type of use, I can get much newer ones than say a mitsi twin post or a subi one that the posts face opposing directions and won't look tidy.

• I cannot see any reason why these coils would not work.

2. What are your recommendations on the ecu it is a LEM g3 I bought in 07 (these projects take longer than expected) if I upgrade the firmware what else do I get? What approximate cost am I looking at? 

• You will have to contact Link on [email protected] to get the price of the upgrade.  The changes are many, so in short the best answer would be if it has the hardware to support it, all G4 features with the available hardware will be available to it, including logging, virtual AUX's, closed loop boost soon to be released, the ability to span almost anything against anything on most tables and so on... The list is quite extensive.  By getting this upgrade (G3-->G4), you will also recieve free G4 FW updates with new features that should apear all the time too.  Don't forget this is all hardware dependant.

3. Can I still download a version of PC Link that will work 

• Yes.  If you retain FW 1.9.2 in your G3 LEM, you will use PCLink V3.4 found here... http://www.linkecu.com/support/downloads/pclink-download/PCLinkV3_40
• If you go to G4 FW in that device, use the latest available (currently 4.6.9.738) found here... http://www.linkecu.com/support/downloads/pclink-download/PCLink%20V4.6.9.738%20Setup.exe

4. I know that the ECU can handle low or high impedance I had heard talk of low impedance injectors run through balast resistors being hard to tune. I have calculated I'd be looking for 550cc injectors which I should be able to get as high impedance. What is best?

• 'Best' is a very subjective discussion really...  But if you have the opportunity to use high impedance injectors(>6 ohms), this will not need ballasting and therefore reduce the cost of parts needed, and another item in the loop that can't cause a problem (that's just my personal take on it).

5. O2 sensors I have the one fitted to the car that I assume is narrow band. If I'm getting this tuned professionally is there any point in wiring this up. Is there any advantage to going to a wideband and if so what? 

• Narrow band will not prove useful in most situations as it will only operate around Stoic, however a wideband installed can adjust fuel on the fly based on a CL Lambda/AFR target table.  Your tuner will use a WB to tune the vehicle anyway, so if it is tuned correctly, there is not an essential need for either.  Personally myself, I like things to be perfect, and therefore have installed a WB in my vehicle for a good watch over the AFR and to adjust fuel automatically.  If you are in the USA with stringent emissions laws for example... The WB may do you a very good favor.

 

6. The stock nissan E15et sensor is a simple on off idle type TPS. What would you recommend to use for this application. Something that bolts up would be nice.

• Well, the engine will still work as the throttle plate is still moving correctly, however your accel fuel and anything spanned off TPS will be very poor, or lumpy at best.  I would be inclined to look for a later model E15 with a 0-5v type TPS (if they exist???).  We just don't know every type of TPS and bolt config about, so you might be down to hunting around in the wreckers I think.
• We do have one solution, but do not know if it will work for you or not.  We have available for 'left' & 'right', a TPS generic type sensor.  This is a little plastic moulding with some mounting holes, has 3 pins being +ve, -ve & signal out, and is driven using a D-shaft.  If you want more info abuot this, contact us on [email protected]

 

Jurgen