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Tightmopedman9 last won the day on August 2 2018

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About Tightmopedman9

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    ever been to the southern part of the gulf for the Bonita run?
  • Birthday 09/04/1989

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    Denver, CO
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  1. Tightmopedman9

    those of you using a 3.5" MAF...

    There is a 3.25" ID MAF housing made by MRPmachineshop that places the MAF element in the center of the MAF housing. This is unlike the BMW MAF housing which places the sensor about .5" off center. You can use a Snabb pipe and replace the 90º coupler with a reducer from 3.5" to the 2.5" diameter of the pipe. If you're running a K24, or any TD04HL turbo you can use a 960 MAF housing, no need for the 3.25" ID housing.
  2. Tightmopedman9

    Tuners Rejoice! Free Tuning For M4.4!

    Sorry for the confusion, I typed up that response hastily and didn't really pay attention to what I posted. I was able to find my notes from the 'fix' and the problem was that the compressor would click on once, and immediately turn off, never to turn on again until the car was restarted. Maybe it was just a problem with their AC pressure sensor malfunctioning, but they did mention that they tested high and low side pressure when the problem was occurring and both were in spec. Probably disabling the pressure error shut off isn't the best course of action, but if you want to do so you can set 0xCAC6 & 0xCAC7 to 00. It could be that you need to increase the cold start factor at higher coolant temps, while leaving the lower coolant temp values the same.
  3. Tightmopedman9

    Tuners Rejoice! Free Tuning For M4.4!

    Please refer to this post for correct information
  4. Tightmopedman9

    how to read TCM DTC codes on '96 850?

    I replace the 3 linear solenoids. I used this kit for a '99 S70: https://www.ebay.com/itm/Transmission-Solenoid-Set-Kit-AW-50-40-AW-50-42-AW-VOLVO-SAAB/330427305429?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649 There is a filter, it just isn't replaceable without taking the whole trans apart. I've only added coolers on P2s, so I can't speak to clearance on P80s, but I can say it will help cool the trans irregardless of driving type. Any time you're moving you'll be getting way more cooling than the stock heat exchanger with the radiator.
  5. Tightmopedman9

    how to read TCM DTC codes on '96 850?

    If it shifts OK cold but poorly when hot you could install a transmission cooler. I've had success curing hot shifts problems on P2s with the AW55-5XSN by installing a cooler, this is the one I use: https://www.amazon.com/Hayden-Automotive-679-Rapid-Cool-Transmission/dp/B000C3BBKS/ref=sr_1_5?s=automotive&ie=UTF8&qid=1543533402&sr=1-5&keywords=transmission+cooler I've also replaced the solenoids in addition to adding the cooler on really poorly shifting transmissions and it's fixed all but one of them.
  6. Tightmopedman9

    how to read TCM DTC codes on '96 850?

    Reading TCM codes via VOL-FCR should work. What's the error you get?
  7. Tightmopedman9

    Tuners Rejoice! Free Tuning For M4.4!

    Reduce your acceleration enrichment at low coolant temps, there is another accel enrichment table at 0xCFA4, same size and axes as the other tables. Also, reduce the values in afterstart enrichment at 0xD8B4, single axis table, 16 values long. It is impossible to get the 850 MAF to sit in the center of the 540i housing, it is off by more than .75". I stopped recommending this housing because it is a pain in the ass to tune. Avinit, I like the hole in your board so that you can solder the pins to the board in situ, very smart.
  8. Tightmopedman9

    Dougy's Sonic Blue 850

    I hate how the engine always rotates when using the harbor freight support straight across the engine. That's a good idea for the center support. Where'd you get it?
  9. Tightmopedman9

    Tuners Rejoice! Free Tuning For M4.4!

    That's just for the amount of fuel injected when cranking.
  10. Tightmopedman9

    Tuners Rejoice! Free Tuning For M4.4!

    @ejenner2004 is ME7. None of this thread pertains to your car.
  11. Tightmopedman9

    Peacocks Wagon Build

    Why not use the ACT disc? That's what I used and it is a much beefier disc than the SD693.
  12. Tightmopedman9

    Tuners Rejoice! Free Tuning For M4.4!

    This LDR routine talk is exactly why I created the 'boost quickener' mod. Any time you floor it and the current load is 1.25ms (can be defined) below the target specified in the target load map the TCV is held shut and the P and I factors of the LDR routine are set to 0. When the load is within 1.24ms of the target load the LDR routine resumes. This guarantees maximum spoolup and minimal overshoot. Regarding the MIL flash due to knock, I need to update the patch file as I made some mistakes in the code. I've reworked it and will upload a new file soon.
  13. Tightmopedman9

    Tuners Rejoice! Free Tuning For M4.4!

    That was just a quick idle and throttle blip from my car. Clutch still isn't working so I can't get running drive logs from it. I shouldn't have posted that, because it really makes the control look much more ineffectual than it is. The new routine directly replaces the stock I factor RPM vs load lookup. I quickly ditched the single axis, non RPM dependent lookup and replaced it with a AFR deviation vs RPM lookup map. The AFR deviation axis is in units of AFR and the scale of the axis is determined by your AFR gauge. I still need to play around with the AFR deviation axis and tuning of the factor, but the above map seems to give pretty good control of the AFR, even if the tuning of the 'VE' map isn't so spot on. At idle I find that with an I factor of 1, and the P,D variables set appropriately, the AFR will stay within .1 of the target. I think the next step in wideband control would be feeding the AFR into the ECU via serial input instead of analog 0-5 voltage. I'll send the code to Piet and Venderbroeck if they want to incorporate it into their wideband regulation mod. I'd appreciate any feedback for tuning of the map.
  14. Tightmopedman9

    Tuners Rejoice! Free Tuning For M4.4!

    I'm going to redo the map lookup with a better map lookup. I'll use an interpolation factor and the axis will be the AFR deviation in .15 increments. I'll include a ROM variable that is equal to the slope of the wideband curve so it will be easy to port to different tunes. I'm starting to wonder about the effects of exhaust gas velocity though; maybe I should create a 8x8 RPM vs AFR deviation map?
  15. Tightmopedman9

    Tuners Rejoice! Free Tuning For M4.4!

    It worked. I just need to figure out how best to tune the map. The AFR swings look over exaggerated in that shot, but I have the axis set to a pretty narrow range, from 10-16. Right now the lowest I value is 8, but I bet I could set that even lower, perhaps even to 0.