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Old 09-03-2003, 11:25 AM   #451
drdray
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I posted on here that I had my ECM reflashed and I heard some dets after I got it from the dealer. Dets weren't as loud and ECM was still fresh from reflash. So I thought I'd give it a run for a week and see.

Well, car been on the road for 4th day and I haven't even used up a tank of gas yet, but I think dets are no longer there. Last night and today I been trying to get it to ping and so far all I got is a may be once. I'll give it a more go today and I hope I won’t hear anything. I was surprised I didn't hear any last eve. It was around 110 and I was on my way from work. All I got was a may be that needs confirmation and it wasn't as clear or loud as before. I just hope that ECM needed a lil bit of learning to get that ping out.

I'm in CA and running 91 and no I didn't feel any power loss what so ever! In fact the car feels smoother after the reflash and still can harass a riced out vigor under 4k rpms love that 6sp!
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Old 09-03-2003, 12:49 PM   #452
strangerq
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110 (!)

Death Valley or what?
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Old 09-03-2003, 02:26 PM   #453
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Do you use the IC spray at 110?

Yes, it seems to take a few days for the reflash to dial itself in.
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Old 09-03-2003, 04:15 PM   #454
drdray
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No actually I'm in Ca, Sacramento.

No I don't use it, unless stuck in traffic. I'm not sure how much of a diff it would make, to me it's just a silly toy for most of the time. You'd have to let the engine idle for while before spay would make a diff, unless you hit it several times in a row and I mean several times not once a minute, but 5-6 times in a minute. I had my WRX since they came out and been in this kind of weather with same temperatures before, never heard a knock or any heat increase. So, I’d guess if you are running the car for few hours none stop in hot weather and using lots of power hitting that spray here and there a few times would help, but I wouldn’t expect it to add any horse power all of a sudden just because. May be is you put the water container in the icebox or something.

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Old 09-03-2003, 04:22 PM   #455
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excellent "How It Works" IC Sprayer article: http://www.autospeed.com/cms/article.html?&A=0527
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Old 09-03-2003, 08:00 PM   #456
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Hey Glenn,

I live in Eastern Washington, and have a few quick questions since we both have access to the same gas, and have both had the reflash:

1) After your reflash, how long did it take for the ECM to figure out the best map to eliminate the dets altoghter?

2) Did you drive the car aggressively, allowing the engine to ping until the ECM sorted things out, or did normal driving do the trick?

Thanks for your help.
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Old 09-03-2003, 11:07 PM   #457
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Quote:
1) After your reflash, how long did it take for the ECM to figure out the best map to eliminate the dets altoghter?
I had no det at all after the reflash but it took a day (40 miles) to get "full" performance. The car seemed a little sluggish during that time. Now it flies, and no pinging since the reflash.

Quote:
2) Did you drive the car aggressively, allowing the engine to ping until the ECM sorted things out, or did normal driving do the trick?
Since the reflash I've driven the car normally (i.e. aggressively).

Glenn
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Old 09-03-2003, 11:22 PM   #458
subislider
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Glenn,

Thanks for your input. One last question--what brand of gas do you use, and what's the octane?

--Dave
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Old 09-04-2003, 12:25 AM   #459
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Texaco, 76 or Shell, 92.
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Old 09-04-2003, 12:46 AM   #460
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Glenn, I'm guessing that the ~40 miles of decresed performance is just the standard "re-learn" period on the STi, correct? I had mine in for the alarm system install today, and when I got it back it was noticeably more sluggish. Then I remembered that the battery had to be disconnected for a while....

It seems like different cars have different re-learn periods - my 2.5RS usually only takes 20 miles, on the nose.

ZenBoy
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Old 09-04-2003, 02:16 AM   #461
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Oddly my WRX was usually faster after a reset.

Also, with Shiv's hypothesis for the STi ECM problem that they fixed, it may be that trying to get an original ECM to a "good state" is problematic. (see forced induction forum thread from shiv).

I actually agree with his theory (having watched techs look at the knock correction number on the select monitor while driving my WRX).... which would mean that getting the reflashed ECU is better than the original one because the original one just does the wrong thing (a bug).

Glenn
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Old 09-04-2003, 12:24 PM   #462
AWD4Shizzle
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Hows the reflash vs. pinginging ECU dyno charts coming along? A lot of people are saying the reflash feels like it pulls throughout the rev band, and that "contrversial" reflashed chart does show it vs. the pinging chart.

Anything? Glenn? Porter?
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Old 09-04-2003, 03:27 PM   #463
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I don't have any time to devote to A|B testing it. My butt dyno is happy, I'm happy.
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Old 09-04-2003, 03:54 PM   #464
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Quote:
Originally posted by Glenn Wallace
I don't have any time to devote to A|B testing it. My butt dyno is happy, I'm happy.
1/4 mile that sucka! that'd show more than the dyno anyway.

Just saw this on usatoday site.....
http://www.usatoday.com/money/autos/...rbuyback_x.htm
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Old 09-04-2003, 04:41 PM   #465
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Quote:
Originally posted by strangerq


Just saw this on usatoday site.....
http://www.usatoday.com/money/autos/...rbuyback_x.htm
Wow.
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Old 09-04-2003, 05:16 PM   #466
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Whaddya mean. I'm sure the RX-8 manual said all you gotta do is run 93 octane ......hehehe
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Old 09-05-2003, 09:30 AM   #467
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Picking my car up today after the reflash. I will drive around for a bit and give everyone my thoughts!
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Old 09-05-2003, 05:45 PM   #468
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Ok, got my car back. Don't know what to say. I still hear something but i'm not so sure anymore if it's pinging or not after reading about the wastegate noise flutter at partial throttle because that noise still seems to be there. At WOT throttle the noise dies down. Now i'm confused as to which is ping and which is that. What i thought was pinging is still there but not as bad. As of now, i just really don't give a flying sheeit anymore. I went in for the reflash service and if my engine blows up in the next 5 years, so be it. I have the ping documented now. It sure as hell won't be my fault and i didn't buy this car to drive it like it was made of china.
Car still pulls just as hard and seems to be learning quickly. I will drive it some more and see how it reacts with more time and what noises i hear. I think i need to go to Adam at Z1 performance again....

Tom
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Old 09-05-2003, 10:20 PM   #469
subislider
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Tom,

I think your car is still pinging. Mine did the same thing. After the reflash, it didn't ping at all for about 20 miles, then it came back. Like you said, not as bad, but you could hear it. I just mixed my 92 octane with a few gallons of 101 octane today, and now it's completely gone. I talked to Subaru before I went down to mix the gas, and they said it's possible that Subaru will release another flash for the states that have lower octane fuel. He suggested that anyone that has this problem let their dealer know so that they can report it to Subaru. The more comments they receive, the better the odds they'll release another flash.

You may as well have some fun with your car either way. Like the service advisor said, worst case scenario you lunch your engine, and get a new one.

Dave
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Old 09-05-2003, 10:27 PM   #470
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I am in SoCal with the crappy 91 octane gas, but after my reflash I have no pings. But, not sure what is going on, but it feels like the power goes flat after 5000 RPM till redline. Also, my factory boost gauge never seems to hit 1 bar! Most of the time its at .5 or goes only as high as 2 ticks below 1 bar. Or is that normal? Cuz I heard others get theirs to go to 1 bar or above.
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Old 09-05-2003, 11:58 PM   #471
drdray
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Well I hate to say this but my pings too. Not as often and loud but it's there. I can't take this crap any more, I'm going to drive as I drove my WRX because the car is begging for it and so is a lil dood inside of me. Added vote to the pole. Still pinging on reflashed ECM using 91. Going to make a call to my dealer and ask them to report to SOA.
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Old 09-06-2003, 02:04 PM   #472
wrxratedII
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I currently have only one subaru dealership within 100 miles of me, so i am limited.
But for all you sti owners that are paranoid about letting a dealer rep or mechanic test drive your car? Hard to test for detonation!
Here is some food for thought. At the local dealership i took my 02 wrx in for a clutch replacement at 40k miles on the car.
This was not a warranty job, the car was pretty modified, aka much faster than my 04 sti is stock.
After the dealer installed the clutch they decided to test drive it, ( i had the subaru performance clutch installed) The tech and the reginal service rep exploded the trany in my car! I mean dents in the firewall exploded, so this is the kinda respect that dealerships and reginal reps have for customers cars!
I know what some of you are thinking, how do i know that it was the rep and the tech! Well a personal friend of mine is a tech for mitsubishi and they are next door to subaru, my friend at Mits was on a test drive saw my car being pushed out of the road by two guys that he didnt recognize, so he stopped to question it and saw the subaru severvice shirt on one, asked them if they needed help. He picked up his cell phone and gave me a call, i rushed down there to see it and the only thing i found was a giant puddle of oil and tracks as to were they pushed it out of the road. It was pretty apparent that they stopped the car in the road and tried to launch it.
Subaru paid for these two guys to abuse my car because its on my warranty record with subaru.
So as to you guys being over pertective of your rides, I personally think your not!
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Old 09-07-2003, 02:34 AM   #473
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Quote:
Originally posted by drdray
No actually I'm in Ca, Sacramento.
Hey, drdray, what dealer did you do your reflash? I am in sac, and planning to do mine too....
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Old 09-07-2003, 03:10 AM   #474
gills
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Quote:
Originally posted by subislider
Tom,

I think your car is still pinging. Mine did the same thing. After the reflash, it didn't ping at all for about 20 miles, then it came back. Like you said, not as bad, but you could hear it. I just mixed my 92 octane with a few gallons of 101 octane today, and now it's completely gone. I talked to Subaru before I went down to mix the gas, and they said it's possible that Subaru will release another flash for the states that have lower octane fuel. He suggested that anyone that has this problem let their dealer know so that they can report it to Subaru. The more comments they receive, the better the odds they'll release another flash.

You may as well have some fun with your car either way. Like the service advisor said, worst case scenario you lunch your engine, and get a new one.

Dave
Well, the situation with my car is a little different now. The more i'm driving it, the less it's doing it. It seems to be going away as i drive. I will keep everyone posted regardless.
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Old 09-08-2003, 06:11 PM   #475
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Quote:
Originally posted by z3coupe
I am in SoCal with the crappy 91 octane gas, but after my reflash I have no pings. But, not sure what is going on, but it feels like the power goes flat after 5000 RPM till redline. Also, my factory boost gauge never seems to hit 1 bar! Most of the time its at .5 or goes only as high as 2 ticks below 1 bar. Or is that normal? Cuz I heard others get theirs to go to 1 bar or above.
I got my car back after reflash last Friday. My buttdyno and right foot told me there're some power loss at the bottom of powerband, it's pretty much the same as rpm climbs. Mine stays at 1 bar or slightly more, definitely linear/smoother with no ping.
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