Effects of reflash? - Subaru Forester Owners Forum
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post #1 of 16 (permalink) Old 11-24-2009, 01:21 PM Thread Starter
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Effects of reflash?

I had the reflash campaign carried out yesterday, as well as an inspection to some under-bonnet wiring. The reflash makes quite a noticeable difference to the engine, here are my observations.

Much more powerful and refined from a cold start. The engine is less noisy and doesn't feel as sluggish when just started.

The fuelling at idle has been revised. Much more torque available; second gear throttle-less starts are easy now whereas it previously would stall in first if the clutch wasn't feathered carefully.

Engine seems even quieter than previous in the 1.5-2k region whilst in gentle cruise.

Revs held-up a little longer on gearchanges, or perhaps the throttle pedal map is more aggressive, dunno. Either way smoother gearchanges seem the result.

Finally, I'm pretty sure there have been emissions-related changes too. I happened to observe a regen cycle today and whereas before the TPS *always* reads 5% during regen at idle, it was reading 4% today.

Anyone else observed similar?
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post #2 of 16 (permalink) Old 11-24-2009, 01:38 PM
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Same recall?

Recall Notice: ECM Reprogramming Service Program WVM-23 (merged thread)

2009 Forester X Premium 4EAT

Respect The Wagon!
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post #3 of 16 (permalink) Old 11-24-2009, 11:04 PM Thread Starter
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no, this is diesel-specific.
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post #4 of 16 (permalink) Old 12-10-2009, 08:31 AM
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Thumbs up

Mine is now done (Mon7Dec), smoother & quieter when cold, better throttle response/flexibility, pulls in 4th@1300rpm without any chug. Plus 4th gear overtaking appears to be improved and there's a bit more go in 6th@1500rpm. And now I can pull away in 2nd

Definitely worth it , since it was free

The recall has been brought on primarily to overcome premature failure of the Closed Loop DPF/Cat. Dealers have already experienced this with high mileage customer Foresters, and at £2000 for the replacement it's just as well they are still covered under the warranty !
Me-thinks steel under trays are going to be a necessity for anything other than the Supermarket run.

Another aspect is that for anyone who has had a performance re-map done, then it's going to be over-written. My dealer had the courtesy to phone me before they started the recall re-flash, but since I'm using a tuning box that was not a problem.

As far as I can establish, the recall for the ECU re-flash is for all SH09 Diesels (the SH10 does not appear to be affected).

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post #5 of 16 (permalink) Old 12-10-2009, 10:20 PM
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hm so the MY10 is not affected? Too bad :) could have done with some engine tlc. Is the reason for MY10 being excluded that it already got the new mapping or that it is not affected by that cat problem you mentioned?

I dont feel that much difference between MY09 and MY10.

Maybe it is something I can pay for to get done on the MY10

d

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post #6 of 16 (permalink) Old 12-10-2009, 11:07 PM Thread Starter
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I'd guess it's already applied to the '10s. Dealer can likely check by VIN.

It's made quite the difference to mine, I gotta say.

Interesting tho, Mike, that it's re. the DPF. No doubt the closed DPF is more sensitive to buildup, but I don't detect any increase in regen duration or regularity. Infact, I've spotted a *barely* visible dusting of soot in the headlights of following vehicles since the flash, whereas there was NEVER any previously. Perhaps the combustion has been tweaked to decrease particle size?
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post #7 of 16 (permalink) Old 12-10-2009, 11:45 PM
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post #8 of 16 (permalink) Old 12-11-2009, 04:55 AM
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For the UK, it appears that the SH-MY2010 is the SureTrak. But everyone will still need to check with their own dealers to see if their SH is classed as an 09 or 10.

I've not done any night driving, but will watch out for any trace of smoke.

My dealer made no mention of a different DPF/Cat as a solution, just the re-flash.

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post #9 of 16 (permalink) Old 12-16-2009, 12:47 PM
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Originally Posted by dpm View Post
no, this is diesel-specific.
Did it today, seems better.

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post #10 of 16 (permalink) Old 01-21-2010, 08:55 AM
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fsonic:- Mike, thanks for your reply and yes, I 'd been through the reflashing topic. Yesterday went to Subaru dealer and asked about ECU upgrade. He answered that since there was no signal from the Subaru Headquarters in Greece, my forester does not need reflashing. He also stated that Subaru calls in for reflashing only the Forester Diesel owners (cars belonging to certain batches from the factory) who face possible threats (he did not say what but DPF problem is a damn good explanation). You believe all the above are accurate?

I don't have the exact details of when the ECU re-flash was applied, but I did get the feel that it was from the middle of 09 onwards. I see you got yours in Jan09, when did the Diesel become available in Greece ?

Since only three of us have posted about the re-flash improvements, maybe it was only the first couple of shipments that were affected.

There are two simple tests you can try :-
1) Does it stall easily ? --- if YES, probably not done
2) Can you pull away in 2nd from being stationary ? --- if NO, probably not done

Your other option is to contact Subaru Europe and get them to check your VIN.

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post #11 of 16 (permalink) Old 01-22-2010, 09:34 AM
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Mike, I got mine on Jan09, however it does not stall and pulls away in 2nd.

Thanks for valuable info.

Kostas
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post #12 of 16 (permalink) Old 01-25-2010, 01:43 PM
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Originally Posted by R5oss View Post
I don't have the exact details of when the ECU re-flash was applied, but I did get the feel that it was from the middle of 09 onwards. I see you got yours in Jan09, when did the Diesel become available in Greece ?

Since only three of us have posted about the re-flash improvements, maybe it was only the first couple of shipments that were affected.

There are two simple tests you can try :-
1) Does it stall easily ? --- if YES, probably not done
2) Can you pull away in 2nd from being stationary ? --- if NO, probably not done

Your other option is to contact Subaru Europe and get them to check your VIN.

Check, check, and yes it works fine!
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post #13 of 16 (permalink) Old 03-02-2010, 09:05 AM
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Quote:
Originally Posted by R5oss View Post
Mine is now done (Mon7Dec), smoother & quieter when cold, better throttle response/flexibility, pulls in 4th@1300rpm without any chug. Plus 4th gear overtaking appears to be improved and there's a bit more go in 6th@1500rpm. And now I can pull away in 2nd

Definitely worth it , since it was free

The recall has been brought on primarily to overcome premature failure of the Closed Loop DPF/Cat. Dealers have already experienced this with high mileage customer Foresters, and at £2000 for the replacement it's just as well they are still covered under the warranty !
Me-thinks steel under trays are going to be a necessity for anything other than the Supermarket run.

Another aspect is that for anyone who has had a performance re-map done, then it's going to be over-written. My dealer had the courtesy to phone me before they started the recall re-flash, but since I'm using a tuning box that was not a problem.

As far as I can establish, the recall for the ECU re-flash is for all SH09 Diesels (the SH10 does not appear to be affected).
I can just chime in.

When I first got the car, I had a little problems adapting to the engine due to the fact that it didn't really handle 1400-1500 RPM when cruising on the highway. I also had several stalls when I entered roundabouts in 2nd gear and tried to pull out.

On the drive home from the dealer today the engine feels a lot more ready to deliver at lower RPM. I even did a little test where I took off from standing still in 2nd gear. Last week I'd have to keep the clutch partially depressed until I got to 20 km/h. Today I could just pull out as normal without even thinking about stalling. The engine also sounds smoother at low revs.

I will see tomorrow if it had any effect on the toc-toc sound the engine makes while accelerating when the weather is cold. :)

-KJ
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post #14 of 16 (permalink) Old 03-02-2010, 11:06 PM
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Originally Posted by jevel View Post
I can just chime in.

When I first got the car, I had a little problems adapting to the engine due to the fact that it didn't really handle 1400-1500 RPM when cruising on the highway. I also had several stalls when I entered roundabouts in 2nd gear and tried to pull out.

On the drive home from the dealer today the engine feels a lot more ready to deliver at lower RPM. I even did a little test where I took off from standing still in 2nd gear. Last week I'd have to keep the clutch partially depressed until I got to 20 km/h. Today I could just pull out as normal without even thinking about stalling. The engine also sounds smoother at low revs.

I will see tomorrow if it had any effect on the toc-toc sound the engine makes while accelerating when the weather is cold. :)

-KJ
Which model do you have? 09 or 10? I have an early my10 and suffer from all the characteristics mentioned on my09.

I will check next time on service (which will be the first time for this car).

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post #15 of 16 (permalink) Old 03-03-2010, 12:01 AM
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Originally Posted by eccentric View Post
Which model do you have? 09 or 10? I have an early my10 and suffer from all the characteristics mentioned on my09.

I will check next time on service (which will be the first time for this car).
If you want to see if there is a difference between yours and one that has been "fixed", send me a PM on thow to get in touch.
I work in Älvsjö - so I'm sure it should be possible to meet up somewhere around there.

2012 XV Sport 2.0D
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