Stefan Mohammed

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About Stefan Mohammed

  • Birthday 02/11/1992

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    Motorsport, Computers, Science and Technology, Hi-Fi Audio, Astronomy, Photography, Nature, Art, Philosophy and Beach-going

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    Trinidad, West Indies
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  1. Good to know! I'm planning to do an ALM LSU-ADV Board install and split the analog output between my ECU and my Auber Electronics Display which I got bundled in with my Thermocouple. All that said will the analog signal be distorted in any way if I split the signal?
  2. Doesn't work I'm stumped on this one. It follows the requested AFR almost perfectly at low load. I boost leak tested the car and there are no boost leaks. As I said it works perfectly off the VE map in a regular 608_rev5b. Any other thoughts?
  3. I'm having some issues with the WBO2 Regulation. My actual AFR follows my requested AFR closely at low loads but as soon as the turbo spools up it goes very rich to the point where it sputters and no boost builds. (under 10 AFR). My injectors are properly calibrated and I have no boost leaks. I tried a regular COP converted/MAF scaled 608_rev5b bin and the car has normal AFRs and boosts fine. The proper channel for my WBO2 is selected, WBO2 regulation is switched on, I have decreased the time for lambda readiness and I have even tried running it with fuel trims switched on/off all in an effort to see why my actual AFR is not following the requested AFR under higher load scenarios. I am also not able to get a knock count from the adx value VKRCOUNT. XFALMIT and FALLT both indicate timing reduction under boost (when using either the regular 608_rev5b tune or the modset with the WBO2 regulation. Any thoughts?
  4. You're using used bearings from different engines? I'm guessing you looked at the block/crank bearing codes for each engine and worked backwards from there to find out each bearings 'colour' and then you swapped all the good/correct bearings into this motor? Am I right?
  5. Really sad to see this go :( This car was a huge inspiration to pretty much any custom mod that I ever did on either the S80 or the 850 (basically this car was my inspiration to stop picking up IPD bolt ons lol). I really respected the attention to detail with this build and the lengths that you went through to have great driveability. I sent an email inquiring about some of the parts from the XR. Let me know if those parts are still up for grabs.
  6. Damn H, sorry to hear about all of this. I completely understand the point about having a reliable daily and as car guys/tinkerers we never stop growing our car collection and modifying our prized possessions. All that said, a tonne of work has gone into the X/R over the last few years. The entire clutch issue was expected based on the kind of torque you were making and the AWD and other drive components requiring service were also realistic given how hard you push the car and the age of the components. I could only imagine how pissed off and demotivated you are when the skirt fails just after your clutch swap. Considering the condition of the other parts though, you practically rebuilt the car after all, do you think it still might be worth it to part it? If the bore is good then a quick rebuild is all you need and the X/R should be pretty reliable for what it is (and it's important to remember what it is, a highly modified/very high output project car). Perhaps if you need a newer/more reliable DD then it might make sense to sell the GT500 instead (seeing as you have less of a financial and emotional investment in that) and get something to replace that (the C30 T-5M or the fiat). Nothing would stop you from using the X/R as a daily once it's running again, but you would have the newer replacement car and the X1/9 as a fall back if something does happen to the X/R down the road. If you (regrettably) do choose to part the X/R or (preferably) replace the GT500, I would advise that you keep the modifications mild... when we starting raising the output too high on these things all sorts of unexpected problems lurk around the corner and then you need to re-engineer the entire car to keep it reliable (like the X/R). My .02
  7. Damn H, sorry to hear about your packages getting stolen... looks like the last 2 months haven't been that kind to you (Clutch job, AWD system repair, X1/9 HG blowing and now these packages)
  8. Need more info on this... this is insane!!! Actually needs a full thread dedicated to it!!!
  9. Great idea! I was thinking the same thing when I was compiling the list but I couldn't find (with certainty) the markets of some of the ECUs. I can inference what some ECUs came in (for example, if a web search comes up with many european based websites selling a particular ECU P/N, that I can assume that this is an ECU for the European market), but this would not be a confirmation as to which market the ECU came in. Can anyone chime in and let me know which ECU P/Ns belong to which market? I guess the main goal is to separate US market ECUs from other ECUs seeing as they would have the hardware to deal with SAS and other emissions hardware so perhaps we should focus on identifying US market ECUs firstly. I've seen mention of the 70% TPS column for the TCV Duty Cycle Pilot Control Map mentioned in the wiki already. Nonetheless, I'm trying to better explain M4.4 boost control and PID (Really PI) controller logic as well as effective methods for regulating boost (i.e. RazorX's Excel Sheet) in the revised documentation I'm contributing to the Wiki. ___ Quick tip: for ease of use when tuning tables in TunerPro... you can have high/low value cell shading for any table in TunerPro. Make sure that 'Color Table Cells' is selected in TunerPro's preferences and then head over to XDF->View/Edit XDF Parameter Info (While the table is selected) and enable 'use low/high range'. Set the ranges as appropriate per the map you are in (e.g. I used 2.25 as the low and 40 as the high in my Ignition Map) and apply. Close and then reopen the table in question and it should now be shaded! I'm sure a few of you already know about this but I never saw anyone post about it. For me it makes a huge usability difference when working in a table especially as I'm accustomed to other tuning software (Haltech ECU manager, etc) that has this already. Devs, perhaps the next wide-release XDF should have this enabled by default for the Ignition/Fuel/TCV Pilot Control and Target Load Setpoint Maps (as well as alternate maps)?
  10. I've been trying to compile a list of all Volvo M4.4 ECUs by part number, year, model, variants and transmission types. This is what I've reached at so far. Any corrections and/or additions I should be aware about? I'm pretty sure the part numbers are correct but as far as the other information there might but a few errors, especially with some of the less common ECU p/ns that are around. I'm planning to use this info on the Wiki in the near future. (Reveal hidden content to see list, it was a bit long and I didn't want to take up unnecessary post space )
  11. Anymore updates with the release of the release of the new rev? I've seen that a few members are currently testing it on their cars (Hussein, etc.) but I haven't seen a widespread release as yet (at least on this thread or on the Wiki).
  12. Damn, and here I was hoping (in some alternate reality) that maybe a full-faced AP setup might have held out to 600whp . I wonder how a puck style disc possibly with a more aggressive friction material would hold up? Based on most people's very positive feedback with the AP setup, I'm fairly confident that AP might have another option for us that might work for higher outputs. ​A while back I was researching the Ford Probe clutch option paired to a machined 850 SMF and 850R pressure plate. During said research I found that several RX7 Turbo clutches had interchange part numbers with the Ford Probe disc. I was planning on doing some further research into the dimensions and suitability of the RX7 discs for our application but it seems you did that for me already!!
  13. Seeing as all these new mods are popping up all the time, I'm curious as to which mods are going to be included in the new rev. Is the load mod the 'special mod' that you guys were talking about for the big turbo guys?
  14. Really eager to get my 850 up and running and play around with the new bin and my big turbo... feels like my childhood christmas all over again Great work as usual Piet, venderbroeck and all the other guys who contribute to the rev!!