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#436
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#437
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ok now this is the discussion I have been waiting for. My issues I feel is that my car pulls timing once I go off boost to full boost (the supercharger is good for that). My feelings are that when this happens the ECU either is not programmed to accept this load increase or it is too slow to react(which is why a slower boost incline from a softer bypass valve may help). I also feel the ECU is programmed to run far too lean and needs more fuel in just about all areas. Let me know if this sounds right to you guys.
Tom |
#438
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#439
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the select monitor instruction in the SVX manual page 97 says the Load Data uses Air Flow Sensor, Engine Speed & Crank angle sensor, I get the rest but don't understand the last. Any suggestions. Also of interest is "Ignition Timing" says to do the tests with the car in Netural so as it was suggested by somebody may be having the netural floating does screw timing when clutching in.
Phil if you drawn me a diagram I will see what I can do next time I get it. Tony
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1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX. 1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC) 1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car. 1995 - SVX Green low k mint condiation. 1995 - SVX Rally car, ex Matts car. Now to be used on track. 1992 - SVX red & Black being converted to Mid Engine. 1995 - SVX Red 143,000 bit rough. Owned 5 others Subaru back to a 1974 1400 GSR. |
#440
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Depending on how the ecu works, thats not really a bad thing and you can take advantage of it. Some ecus work with values in the fuel table directly being pulsewidths, and in that case if you run off the edge of the map you really are screwed. Nissan (and from the sounds of it Subaru) ecus either use a target AFR, or a multiplier for a calculated base injection time, so in that case running off the edge of the map isn't bad, your just operating on the last column. Because the value in the map is a multiplier or a target value its not like the car is going to lean out like it would if it was a fixed injection time. This makes for an easy way to tune the car. I purposely scale the table down so that when the car hits some low boost value (like 4psi) its on the last column. I then set boost to whatever the car is going to operate at, and now when I tune I only have to work with the last column. you can do the same for an NA car, just make sure under WOT your on the last column.
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#441
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agreed...I probably went a little overboard with my statement, only with the intent of recognizing LAN's efforts to date. -Bill
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Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker |
#442
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I believe that when LAN came out with the 2v line of chips using the z32 MAF he did post how he had rescaled the tables. -Bill
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Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker |
#443
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Does anyone know what the commuication protcol is used for the RS232 connector, for example would it be ASCII In/Out the reason I ask is that to do what we need it may be quicker to plug in a PLC as programing them can be fast.
Tony
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1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX. 1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC) 1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car. 1995 - SVX Green low k mint condiation. 1995 - SVX Rally car, ex Matts car. Now to be used on track. 1992 - SVX red & Black being converted to Mid Engine. 1995 - SVX Red 143,000 bit rough. Owned 5 others Subaru back to a 1974 1400 GSR. |
#444
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Quote:
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#445
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That's my recollection as well.
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#446
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The issue of showing vendor maps has been batted around quite a bit on EvoM as well. Showing vendor maps is not permitted. However, once the ECU was unlocked and free tuning software hit the streets, everyone started tuning and posting their results. It only took about a year for the community to establish the optimal range of fuel/timing/etc maps for the Evo.
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#447
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For cars that are using something like a Greddy Profec-B with a hi and low boost setting what I do is map trace or datalog the load value with the high value, then do the same for the low value. I then make the second to last column the average load value for the low boost setting, and the last column the high boost setting. Now you might think that limits your tuning to just two boost settings, but doing the above is actually pretty slick and here's why: the ecu interpolates between the columns (and rpms) in a linear fashion (probably, Nissans do and I bet the Subbie does too). So what you've really made isn't just a tune for a hi-low boost seting, but boost dependant timing retard and fuel enrichment based on the parameters of your two columns. Neat. |
#448
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I got my USB cable, I downloaded JDash and vwrx. What do I do now?? I've tried to follow this thread and others on the subject. I've read back through, and am now even more confused.
I'm guessing there is someplace that I change settings, but I can't really find where to do that?? I also found someone mentioning Phil editing the VWRX .ini file, but I can't find the details. If you want, I can be IM's at hocrest1 Thanks
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Dave - 03 Baja - 92 SVX - 86 Brat - 08 OB 3.0 |
#449
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Desertrunner: It's binary, not ASCII. 1953 baud rate, 8 data bits, 1 stop bit, even parity.
Hocrest: JDash I don't think is going to help you right now, but VWRX will work. First run the SelectDump program in the VWRX software. It'll give you an ECU ID if your connection is working correctly. Then get Phil's modified SelectMonitor.ini file from here and replace the one that comes with VWRX with it: http://www.alcyone.org.uk/ssm/ecu/SelectMonitor.ini ...find the entry for "1994 UK SVX" and change its ECU ID value to yours. Then save the file, and run the SelectMonitor. It should be fully functional now. |
#450
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I get nothing when I run VWRX, so I guess I have connection issues...
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Dave - 03 Baja - 92 SVX - 86 Brat - 08 OB 3.0 |
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