Simon

1: Maybe it will depend on what you have in use already for example you could use the stock AFM signal inputs to bring in the pressures. But often the XS loom just makes it easier. 2: The PC link help file is where you will find the pinout information Navigation: G4+ Plug-In ECU Installation Manual > Pinouts > GTRLink 3: Much like #1 it will depend on what you have in use already. You might for example not be running AC so the output for this could be repurposed for fuel pump control. 4: All of those are going to require power and ground and then the signals. The CAS sensors will be able to use the existing CAS wiring you will just have to extend / split it off to allow for the 2 sensors and different location of the crank one. The pressure sensors will likely require a 5V supply this could come from say the TPS wiring as can the ground. Or if you go the XS loom path this has all you will need. 5: Yes this is done in the Triggers menu in the ECU Settings of PC link.

At a guess I would say there is a connection issue internally. We can look at repair if you were to send in the unit. http://www.linkecu.com/contact/ecu-service-requests/

Yes I would say it is as the settings should be checked but the reality is very had to be sure you have got everything (there are a lot of settings). Final check should of course be the actual running of the engine which can then highlight an issue and it then becomes a case of finding it.

The terminals for the NA/NB MX5 are the same as we used for the G3 series so we are able to supply via the dealers if you require.

The problem stems in this case from taking a map from an ecu that has not had peak and hold settings available and then loading to a ECU with those settings available. We try hard to avoid this happening but in this case a setting has got through. Now we are aware will work to get it fixed so in the future it does not happen.

The ignition delay should be checked with a timing light and adjust to suit. Navigation: G4+ ECU Tuning Functions > Ignition > Ignition Setup > Ignition Delay Spark duration will be fine at 1ms

The quad Vanos is not supported as it would require 8 aux outputs to control all 4 cams. Most that have done this engine lock the exhaust cams and control the intake only. Trigger wise I believe the pattern is the same as the S54 engines.

Hi Alan It is important to remember the knock is a protection feature in an ideal situation I would hope you will never see knock and as such the feature would not be put to use. Back in the day this was a feature held back from the Link units but was enabled in the (premium) Vi-pec units.

Hi you mention the engine is on ITBs generally these are best tuned using TPS for the load axis on the main fuel table I would certainly upgrade the firmware as the first step. Generally 1/cycle injection rate is used for multi point applications 1/2 cycle is generally for single point applications.

I would expect the data to be there but on looking in the help file it looks like the information is still from the G4 Navigation: Technical Terms and Reference > Communications > Long Datastream

Hi Alan On the G4 to get knock control you need an external Knock block to interface with the ECU. It did not support internal knock. Unfortunately the Knock block (G4) is no longer available.

Yes the Serial stream has changed on the G4+ from the G4 what I'm not sure on is where the difference is. But there is a note that our old display link will not work on the serial stream of a G4+

Check the fault setting voltages for all the AN volt inputs and the temp channels.

You can already use the likes of the Atom or Monsoon for such an application.

Just use a driven input but assign as non driven. You can actually have both driven and non driven off the one input.

Where do you have the PC link installed on your hard drive?

Due to the fact the more storage we use the more it costs us for hosting the forum so the size is limited. Best bet is to link to an external image host.

You can leave the MAF in place or unplug and remove completely. Signal wise the ECU does not require it.

Are the power supplies and ground common to the sensor? All terminals are crimped well and still have good contact to the terminals.

MAC valve can be wired to the stock BCS wiring The IAT will be wired between the ground and AN temp 3 on the XS loom

Check the settings for the temp input channel make sure the fault values are correct and you only have the one input assigned as ECT. A copy of your map would help

First step will be to put the ISC to open loop mode and then adjust the duty cycle to see the effect. You can then take it down to say 10% and idle should be very low. If there is no change then it becomes a case of finding where the air is getting in from. I would suggest reading through the help file of PC link too Navigation: G4+ ECU Tuning Functions > Idle Speed Control > Closed Loop ISC

BCS to the stock wires will be the go and the IAT to the XS loom using Gnd and the Temp 3 wires.

Is there a idle speed control valve fitted?

Big numbers will cause it to run all the time but that is not desirable as you want the CCL locked out during transients. I would suggest typical settings of 4Kpa for map and 5% for TP