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#166
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Forgive me for being picky, but as I read it, the mix looks richer than stock below 5500 rpm. A lower AFR means less air more fuel.
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Subaru ECU and TCU Website 1992 Alcyone SVX Version L 1992 Alcyone SVX Version L 1994 Alcyone SVX S40-II 2004 Subaru Legacy 2.5 SE Sports Tourer 1996 Subaru Legacy 2.2 GX Wagon 1988 Subaru Justy J12 SL-II |
#167
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Apologies, gaffe corrected. Joe
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Black Betty [Bam a Lam!] '93 UK spec, still languishing Betty Jersey Girl Silver '92 UK [Channel Isles] 40K Jersey Girl @ Mersea Candy Purple Honda Blackbird Plum Dangerous White X2 RVR Mitsubishi 1800GDI. Vantastic 40,000 miles Jersey Girl |
#168
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What we need here is 2 ecu's, one with the stage one after it has learned, and one stock. Dynoed on the same day.
-Patrick
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Patrick 1995 Ebony Pearl. S.N. 0001 "Araby" JDM Power Mode Switch, Integrated GPS/Video Player 6Xk Miles. 1992 Teal - Sold to Mysvxrocks [SIGPIC][/SIGPIC] |
#169
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However since we can pretty much rule out weather as a factor at the moment (atleast till it's summer in Wilmington, NC), Then my stock ECU runs should be a good basic place to start... The reason we did 4 pulls is because the car kept making power, slightly more each time... I will say that I think the chip effects fuel economy alittle (in the performance map)... I just got back from an Autocross in Wilmington a few hours ago and only managed 21 mpg down there and halfway back... That's a few less than what I would normally get... However, I don't know if that was a great test since I spent most of the time driving down to wilmington behind a Corvette Z06 and another car that were doing 90-95 the whole way down... We made record time, but I could have sworn that every time I looked down at my fuel gauge, it was slowly creeping down towards the big "E"... I am heading to Charlotte to see my grandparents next weekend and that trip will be done at a much more conservative pace (70-ish mph)... Normally with a full tank and driving at about 70mph I can get about 25mpg... Just filled up on my way back to Raleigh tonight so the only miles on this tank so far are highway miles... If I missed anything just let me know ~ Chris
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2020 Subaru Outback Touring - Wife's first Subaru 2005 Volvo V70R - 5-cylinder love! :Heart: ** SOLD **1998 Subaru Legacy 2.5GT Wagon - MOST RELIABLE car I've ever owned ** SOLD **2006Subaru WRXSTi (Former "Boxer4Racing.com / Continential Tire" STi) - Built EJ22t block / EJ207 JDM STi "big port heads" - 9,000rpm MONEY PIT!!! ** SOLD ** 1995 "Tree-Hugger Green" SVX L AWD(5 MT) --- "Gumby" 130K miles #399 in MY95, my original love... |
#170
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You should be back to stock consumption at 2500 rpm, back to normal. Joe
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Black Betty [Bam a Lam!] '93 UK spec, still languishing Betty Jersey Girl Silver '92 UK [Channel Isles] 40K Jersey Girl @ Mersea Candy Purple Honda Blackbird Plum Dangerous White X2 RVR Mitsubishi 1800GDI. Vantastic 40,000 miles Jersey Girl |
#171
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There is a reason you should have disconnected the battery before the stock runs... this would have cleared the "learned" data and allowed you to do a stock map to modified map comparison.
Tom |
#172
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Learning mode function on ECU
On the "learning mode" function of the ECU, what effect does the power light "mod" (connecting a switch to ground a pin on the ecu to engage the power map) have on the "learning" process?
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Cheers! Gordon 1997 Ebony #308 113k "The Black Diva"SOLD 1992 Black over Liquid Silver 152k SOLD 1992 Ebony 251k 444 SOLD 1999 Silver SLK230 134k SOLD 1997 Green Outback 137k SOLD 2013 Honda Accord I4 SOLD 2015 Subaru Crosstrek 30k 2018 Tesla M3 30k |
#173
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None, power mode merely changes the shift patterns for the transmission, it has no effect on the ECU
Tom |
#174
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The "learning" mode should probably be thought of as an automatic adjustment mode from the fuelling system. The software analyses data from the input sensors, and based on load and detonation and O2 information etc it adjusts to an optimal fuel mix based on the information it "sees". So if you have been using low grade fuel, and the ECU has adjusted to using that, and you then fill up with high octane fuel, the ECU has to "learn" as you drive that it is now safer to load the engine more without risking detonation. Such an adjustment function will cause the timing to be changed in this instance. These adjustments will continue to be assessed and reacted to, regardless of whether the gearbox is in normal mode or in power mode. My guess would be that the ECU would learn to retard the ignition less while the car was running full-time power mode as the gearbox would tend to rev the engine higher in each gear, which is a lower load situation in regards to detonation. Basically it would be doing the same job in either mode, just compensating for the different circumstances. Joe
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Black Betty [Bam a Lam!] '93 UK spec, still languishing Betty Jersey Girl Silver '92 UK [Channel Isles] 40K Jersey Girl @ Mersea Candy Purple Honda Blackbird Plum Dangerous White X2 RVR Mitsubishi 1800GDI. Vantastic 40,000 miles Jersey Girl |
#175
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So, we've established that GreenMarine's results, comparing a learned stock ECU with an virgin stage1, show that the stage1 offers a slight improvement.
Does anybody have any idea how much effect the learning could have? Are we talking 1-2hp or 10-20? The power mode will not make a difference to the ECU learning, but the california mode might.
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Subaru ECU and TCU Website 1992 Alcyone SVX Version L 1992 Alcyone SVX Version L 1994 Alcyone SVX S40-II 2004 Subaru Legacy 2.5 SE Sports Tourer 1996 Subaru Legacy 2.2 GX Wagon 1988 Subaru Justy J12 SL-II Last edited by b3lha; 03-31-2008 at 10:20 AM. |
#176
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I'm going to go on record as supporting ~5 hp after "learning" -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 |
#177
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~ Chris
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2020 Subaru Outback Touring - Wife's first Subaru 2005 Volvo V70R - 5-cylinder love! :Heart: ** SOLD **1998 Subaru Legacy 2.5GT Wagon - MOST RELIABLE car I've ever owned ** SOLD **2006Subaru WRXSTi (Former "Boxer4Racing.com / Continential Tire" STi) - Built EJ22t block / EJ207 JDM STi "big port heads" - 9,000rpm MONEY PIT!!! ** SOLD ** 1995 "Tree-Hugger Green" SVX L AWD(5 MT) --- "Gumby" 130K miles #399 in MY95, my original love... |
#178
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My estimate is you will only realise one or two hp at the most. However you will benefit from a good torque improvement of 5-8 lbs from 4k to 5k. I'm basing this on the fact that the principal fuelling change has been to richen up 3k to 5k. You are in fact getting the change/improvement where it is most useful on the road, punch for overtaking. Joe
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Black Betty [Bam a Lam!] '93 UK spec, still languishing Betty Jersey Girl Silver '92 UK [Channel Isles] 40K Jersey Girl @ Mersea Candy Purple Honda Blackbird Plum Dangerous White X2 RVR Mitsubishi 1800GDI. Vantastic 40,000 miles Jersey Girl |
#179
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~ Chris
__________________
2020 Subaru Outback Touring - Wife's first Subaru 2005 Volvo V70R - 5-cylinder love! :Heart: ** SOLD **1998 Subaru Legacy 2.5GT Wagon - MOST RELIABLE car I've ever owned ** SOLD **2006Subaru WRXSTi (Former "Boxer4Racing.com / Continential Tire" STi) - Built EJ22t block / EJ207 JDM STi "big port heads" - 9,000rpm MONEY PIT!!! ** SOLD ** 1995 "Tree-Hugger Green" SVX L AWD(5 MT) --- "Gumby" 130K miles #399 in MY95, my original love... |
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