Dave Kriedeman

Hi, only my opinion, but if you have a cell at example 6300 rpm that the AFR is out, I usually maths key tune the 6000 and 6500 rpm, or you can insert that axis point if you really want to as in add 6300 rpm to the rpm axis. Personally I choose the 6000 and 6500 maths key option. This adjusts both sites plus the interpolation between the two cells. Regards Dave.

Hi all, the earphone jack is a great idea. Besides that however for those who have on-board knock control have this feature set up correctly and the engine is tuned correctly you can setup an AUX O/P to activate if knock occurs. This could be in the form of an LED or form of Audible Buzzer etc. The KNOCK FEATURE should be set up when tuned so that the worry of knock shouldn't be of concern. Engine Knocks, Knock control retards the timing, activates AUX O/P so you are aware that there has been a knock event, let the ECU do what it is designed to do. You have purchased a great ECU, use and trust it's many abilities. Regards Dave.

Hi Grant, please try EFI HARDWARE, www.efihardware.com Regards Dave.

Hi f8, the plead for the ATOM to lose 2 resistors wont happen, however FIRMWARE to be able to switch them OFF may. But that is LINKS call. Regards Dave.

Hi, setup the same as 1JZ VVTi Regards Dave.

Hi, I have also noticed that ignition drive 3 is set to TEST ON also. I am in the process of testing this file on my test ecu. Regards Dave.

Hi Artic Cat 920, what are Aux 4 and 5 used for. You are using FIRMWARE 4.9.9, I suggest to upgrade to 4.10.2 There seems to be some strange settings within the PCL file that make no sense. Can you please upgrade your FW to 4.10.2 and recheck all your settings and let us know how you go please. Regards Dave.

Hi Davidv, yes this is what I would and have done. Regards Dave.

Hi f8, another way around your issue is to use an ANALOGUE VOLT input and set that up as a temp input, the external pull up that is required to do this will be supplied via the OEM ECU. You could also always fit extra sensors to the engine as the IAT and ECT sensors are very important calibration inputs to the ecu for correct tuning strategies and limiters etc, etc. Leaving the factory ECT sensor in use with the OEM ECU so that things such as the temp gauge still works, if it uses the ECT sensor and not a separate temp gauge sensor. ((((((((( SORRY JUST REALISED YOU HAVE USED ALL AN VLT INPUTS))))))))) I would suggest that the ECU be sent back to LINK to have the pull ups removed, if you don't wish to add separate sensors. Any alteration to the ECU circuit boards and or components would render your Life time warranty void. My advise only, not LINK's. Regards Dave.

Hi Artic Cat, just curious as to why you are using the nitrous at such high rpm, no big deal but I normally bring it in at approx. 3500-4000 rpm in car applications anyway, I have only ever used nitrous on one JET SKI. Also the pressure setting of 400 psi is this in regard to bottle pressure for the N2o as optimum pressure is normally around 900 psi. You also have Virtual Aux to be activated when OFF in these setting or have you changed that to off when you reversed all your other settings. Remember also that all Aux OP are switched to low , ground when in the OFF position, so when power is turned off to the ECU these outputs turn off and ground out, which will turn devices on if the relay power side of the coil is not switched via the ignition. Is this a dry or wet kit. Regards Dave.

Hi, Simon is correct, MSD units use a rising edge trigger not falling like most other manufacturers, also did you set the IGNITION DELAY correctly. Regards Dave.

Hi, you don't need to worry about confrontation. Just ring the guy and voice your concern in a manner that does not indicate laying blame on him. For example just a state you noticed that the engine seems to be excessively hot and it has melted the intercooler pipes do you know what could be happening. Would you mind having a look at it for me please. Or PM some one on here or the LINK tech support tem for help. I can remote log into your ECU check your PCL file and test for you. If it is indeed a tune issue it wont take long to resolve. Regards Dave.

Hi, are you referring to the MIXTURE MAP only or Quick tune also. If referring to Mixture MAP tuning, or any of the tuning the ECU does the interpolation on all cells. The mixture map X and Y values are derived from your main fuel table,so if you want more accurate resolution you can add more load sites to the fuel main table X and Y axis's. Same as QUICKTUNE, the setup parameters are super critical to the system working correctly. Turning tune ahead on or off has a big effect. How many % added to the tune ahead, Tune ahead position, across, across and right, across and down etc. Cell centre accuracy cell centre target time etc , etc ,etc. These functions only work as good as the setup information you put into the software. Like the MIXTURE MAP, making sure you have setup limiting parameters etc. EXAMPLE, TPS and MAP, if you lift your foot off the throttle the TPS value will drop and the MAP will increase as in you may have been cruising at 60 Kpa , take foot off the throttle and you have 20 Kpa (increased vacuum). Obviously the AFR will show up as a lean condition, you do not want this data effecting or showing up on the mixture map or you will end up with incorrect fuelling due to incorrectly deciphered information. Mixture Map is a quick way to tune but be careful with the data you are looking at. I try to start with a flat fuel table EG: start with a fuel table with a flat number of say 40 - 50 in every cell. That way if you look at the surface graph it is just a flat plane. Having the fuel table cells setup this way, you will be surprised how quickly and accurately the tune will pull together. A particular cell in a true centred state may start at flat 50 but actually need 52.3 to reach the target AFR. By having all tables cell values the same the interpolation values are less than from a map with a lumpy surface graph. So what I am getting at is when the tuned cell is corrected the surrounding cells need very little change to correct themselves and has minimal effect on all other cells around it, leading to a much more accurate overall fuel tune. As for transitional state changes like TPS increases etc, it is obviously common sense to hold that point until stable and the AFR reading has stabilised to be accurate. I could rabble on about this for hours however I need to know more information than what you have posted to zero in on how and why for everything. I don't often use MIXTURE MAP, I do look at the table colours every now and again, but the data log information is what I am interested in most. Same as QUICK TUNE, set up correctly, I do not use TUNE AHEAD function at all, I adjust time in centre and accuracy but that is it. With the flat fuel table you will find that in QUICK TUNE it will tune very quickly. Tune a row and then copy and paste to the next row, you will notice very little change from cell row to cell row. There will be an obvious fuel trend increase around the point of maximum VE (TORQUE) where the numbers may increase at a more noticeable value changes but nothing huge. The SURFACE GRAPH will appear a lot flatter than what you probably have seen, but you should not have big troughs and peaks in your graph. My preferred method of tuning is QUICK TUNE on the dyno and then MATHS/ MANUAL KEY TUNING from the data logs. Anyway, that will do for now, I have rabbled on enough. Regards Dave.

Hi, I will endeavour to find it, dig through all of my PCL files, just have to remember which version of firmware we created it with. I am in no way opposing any of your suggestions, I encourage it, I just wanted to let you know how the process works, sometimes rather than waiting it is good to try and make a way for this function to work. Requesting a function is great, but if you have done any work on the suggested function etc this can be forwarded on also, making the setup time for the engineers a lot quicker and understand exactly what you wish to have happen. Regards Dave,

Hi impellerhead, can you please PM me who you spoke to please, so I can confirm to you what is happening with this unit. Just need to make sure we are talking about the same person here. Other plans have come to light on this issue. Regards Dave.

Hi sanad, I am unfamiliar with your engine. Can you please advise what type of sensors that the Crank and Cam sensors are. How many teeth etc. Regards Dave.

Hi Augusto, yes as long as your ecu is an I SERIES you can keep updating with any of the new PC LINK UPGRADES until otherwise advised, which would basically only ever happen if the main processor chip was to ever change. Regards Dave.

Hi Impellerhead, The onboard logging is a Hardware limitation. The unit I am referring to is being built by a friend at my request. Same as anything, once built and software is written , both the unit and software must be tested and proved to work correctly before release. THE FOLLOWING IS MY PERSONAL FEELINGS AND STATEMENT ONLY. THIS HAS NOTHING TO DO WITH LINK THEMSELVES AS I DONT WORK FOR LINK,however, I find it a little sad that you state more or less if you don't find out about this thing and what it can do then you are LIKELY to LEAVE the LINK ECU for a competitors brand. I will not reveal anything about this unit, I am honest and Loyal to my friends and to LINK and will not release IP to anyone until I am given the nod. If you chose to use a different ECU I can not stop this choice, would be a shame however. Regards Dave.

Hi Davidv, great to hear you are enjoying tuning your ECU, these are exceptional ECU's. A lot of people don't realise what they are missing by using other brands. Just confirming your fuel setup, Injection mode = Sequential / Staged Fuel Equation mode = Modelled. Staging Mode = Pri / Secondary ratio Just remember this setup is a % added or subtracted from the fuel table. I am a little confused about your statement "" For sake of fine tuning this number initially, I set the car so that it would switch to 100% outer injectors from 3000rpm onwards"" In modelled or Modelled / Multi Fuel it is VERY important that the injector data is correct. Just trying to understand exactly how you have set everything up to work out why when using the correct Pri / Secondary ration your AFR went so rich. Regards Dave.

Hi Hexdmy, what you are referring to I have a work around that most people use. I use the Idle Ignition Table to overcome these issues. With setting up the base throttle blade air gap and base chosen idle timing,i adjust my setup to the point of being able to totally do away with idle controllers completely. There are many different processes to this but it is very simple. I tune a lot of twin turbo Big Bloch Chev Race boats, these things run approx. 6" Hg at idle, Through my setup process without any idle speed controllers, we can start these engines dead cold and have beautiful ide and pull the trans into low or second gear, (HIGHLY MODIFIED TURBO 400'S converted to 2 speed, NO TORQUE CONVERTORS, Just a direct drive plate setup. Without any RPM change indicated by the MoTeC DASH or by feel or ear. However your suggestions are fine, but sometimes these types of requests will not be prioritised due to the low volume of requests. However all requests are governed by LINK themselves. Regards Dave.

Hi Daniel, great video, looks like heaps of fun. Please try the decal fuel cut and turn the Transient Ignition Retard off. Regards Dave.

Hi Crispin, Great suggestion, this is possible in some cases to a degree already, however to have enough settings for the 3 rd setup in SOME areas would need additional MAPS added. Regards Dave.

Hi Augusto, Yes the upgrade will work. If you wanted to start with a new base file etc, then you would use the BLACK EXTREME BASE MAP in the new software. Regards Dave.

Hi Adamw, what I am hinting at is not my position to release any details , it is not a LINK product but will work with LINK and any ECU. Generic software for other brands ECU's. (all I am saying for now). I will not elaborate any further on this until ready. Be patient and see what happens. Regards Dave.

Hi, as I stated in another post, Keep posted there maybe an aid for this issue available soon. Regards Dave.