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JB9

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  1. Thanks CJ. I adjusted the dead times to what that table says, and it made a small difference. After that, I copied the settings from the Injector Dynamics ID2000, which is their 2200cc injector. I figured the characteristics should at least be similar. This helped a lot, so fueling definitely seems to be the culprit here. It's not 100% ok yet though, but I now have a somewhat stable idle at 980-1020rpm. I'll do some more fiddling to see how close to the stock 750rpm I can get.
  2. bumping this thread -- Does anyone have the short pulse width adder values for these injectors? dead time seems to be 0,45ms @ 14V @ 3bar.
  3. Sorry, could have mentioned that earlier. They are Bosch 2200cc/min @ 3bar, 0280158821. This is the info I keep finding everywhere for them: Coil Resistance: 9.1 Ohms Dead Time: 0.45ms at 14 voltsStatic Flow Rate @ 43.5 PSI ( 300kPa ) w/Gas: 2200 cc/min = 210 lb/hrStatic Flow Rate @ 58 PSI ( 400kPa ) w/Gas: 2550 cc/min = 240 lb/hrStatic Flow Rate @ 78.5 PSI ( 500kPa ) w/Gas: 2865 cc/min = 273 lb/hrStatic Flow Rate @ 88 PSI ( 600kPa ) w/Gas: 3155 cc/min = 300 lb/hrStatic Flow Rate @ 101.5PSI ( 700kPa ) w/Gas: 3350 cc/min = 320 lb/hrConnector: Denso / SumitomoInjector Length: O-Ring to O-Ring: 1.5. / 37.5 mmInjector Body Diameter: 16mmO-Ring: 14.5mm VitonAcceptable Fuels: Gas/Petrol, alcohol/methanol, E85, CNG Looking at that -- Would you say the tuner has set it up wrong? Or perhaps a "normal" idle is too much to hope for with those? I've never had a car with anything "bigger" than 875cc before so I wouldn't really know. EDIT: Found this info on one site as well: Bosch 2200cc 0280158821 43psi / 58psi / 70psi / 80psi 8 V 1.45 / 1.67 / 1.82 / 1.96 10 V .95 / 1.10 / 1.17 / 1.27 12 V .68 / .78 / .84 / .93 14 V .47 / .57 / .64 / .70 16 V .36 / .46 / .49 / .52 Static Flow Rate: 2200cc @ 43.5psi / 3bar Static Flow Rate: 2550cc @ 58psi / 4bar Car runs the stock Denso 3260 FPR which is set to 3bar/43psi AFAIK.
  4. Sorry for the late reply, haven't had time to work on the car.. Here's the map and 3 logs. The rpm gap varies between the logs, that's because I'm trying different BISS screw settings from time to time. Idle is somewhat stable if I open up the screw so much that it idles above 1350rpm. If I set it so it idles around 950, it's fluctuating at first but stabilizes somewhat after a while. If I go lower, it fluctuates all the time. Car is an Evo IV with a Evo VI engine, E85, bigger injectors, fuel pump, 2,75" exhaust, better elbow, better intercooler, ARP rod bolts, etc. The usual. JB9.pclr Log 2019-08-30 8;06;19 pm.llg Log 2019-08-30 8;12;45 pm.llg Log 2019-08-30 8;24;12 pm.llg
  5. Hi all. I just bought an Evo IV GSR -97 with G4+ Plugin in it. The car is supposed to be properly dyno tuned, and it drives fine, but I'm not sure the tuner has set up the idle correctly, or if I might have a hardware issue. Idle is fluctuating +-150rpm, and I've tried pretty much everything with the idle control settings in the ECU now. I can't get it to a point where it's stable, not even in open loop mode. At first, I couldn't get it to go below 980rpm or so at all, so that's when I learned about the base idle screw in the throttle body, and from Mitsubishi/DSM forums it seems like the guys with oem ecu does some kind of base setting of the screw with the ecu idle control disabled, but I can't find a way to disable it in pclink, so I tried disconnecting the connector on the throttle body instead... But even then, I can't really get to a stable idle by adjusting the "BISS" screw. Could this be because the fuel map is badly tuned at idle? Or is it definitely a hardware issue with the throttle body/stepper motor thingy? How do you guys have the Evo 4-6 idle set up? EDIT: I should probably add that I have a spare Evo IV throttle body laying around I could try with (took a better condition BISS screw from it already), but I'd like to avoid and find out it if it's a tuning issue first. Thanks.
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