'08 STi - CODE P0244 - Overboost - Page 2

Qwik06StI · 03-01-2008, 12:24 PM

I am having the same issue on my 06 STI, Mine doesnt do it till about 5.5k close to 6k. I have a catless invidia dp with a hks catback exhaust. I am also untuned I dont know if that plays a part in it.

JD_STI · 03-01-2008, 12:34 PM

Quote:

Originally Posted by parkergc8

The ECU can only output about 18.4 psi in stock trim. The Accessport therefore only goes up that far.

Hopefully you don't need to modify anything. But when getting a catback, it may get worse. You must have a slightly less efficiant wastegate.

What RPM did you start fully accelerating at when this happened?

true. I wonder if you can switch to the economy map to test for creep, similar to what Cobb explained to do for the 07 maps. I remember trying this a year ago when I was still using the cobb maps, and I was creeping up a bit on the econo map. My APS is also catted.

pwn · 03-01-2008, 04:32 PM

Quote:

Originally Posted by Qwik06StI

I am having the same issue on my 06 STI, Mine doesnt do it till about 5.5k close to 6k. I have a catless invidia dp with a hks catback exhaust. I am also untuned I dont know if that plays a part in it.

Post that in the proper forum please...

droideka · 03-01-2008, 09:22 PM

Quote:

Originally Posted by Subw00er

Droideka, When COBB told you to reset the ECU, was it to relearn more quickly rather than just taking it easy for a couple weeks? That is, did he comment on the ecu "learning" aspect and that it may be the cause?

it was just a suggestion to clear the tables in the ECU. it does feel different today than when i picked it up on wednesday. it's stronger and smoother after resetting the ECU, i can tell you that much.

Subw00er · 03-01-2008, 09:34 PM

Quote:

Originally Posted by droideka

it was just a suggestion to clear the tables in the ECU. it does feel different today than when i picked it up on wednesday. it's stronger and smoother after resetting the ECU, i can tell you that much.

Ok, keep us posted!!

Qwik06StI · 03-02-2008, 09:11 AM

Quote:

Originally Posted by pwn

Post that in the proper forum please...

I didnt post the thread to begin with. Im tryin to get feedback also.

**Digitalfiend** · 03-07-2008, 08:27 PM

Boost creep is a mechanical issue and not something that an ECU reset is going to fix. The wastegate simply can't evacuate enough exhaust, so the turbine keeps spinning faster, and faster (i.e. producing more boost.) My understanding is that this can occur due to colder air temps and possibly denser air at lower elevations; for instance, you might be fine during the middle of the summer but come winter the problem presents itself.

Also, just because there is an overboost fuel cut safety feature, doesn't mean you don't have to worry about boost creep. If you're overboosting, you've got to worry about running out of injector and/or knock events. If you are going to continue running your car with the potential for overboosting, I would highly recommend you datalog to see how your car is managing when it happens.

The only real options you have are:

- porting the wastegate, though that is not always the best solution

- changing the restrictor pill / adjusting the tune (Protune) to have the wastegate open sooner, though this won't always solve the problem because you are still mechanically limited to how much air can get out the wastegate.

- go to a divorced wastegate downpipe setup which has a dedicated pipe for the wastegate gases. I had a divorced setup and had no issues with boost creep, even in our cold, cold winters and 1 high-flow cat. I did have boost spikes, but that is a different issue related to the tune (which were solved with a retune.)

One last thing you might want to check is that the wastegate isn't blocked and not able to open fully. Some people have had that problem with aftermarket downpipes though it is very rare.

Just my two cents.

sleepyhead · 03-22-2008, 08:20 PM

Well I just got the P0244 code tonight coming home. I had been running the Perrin Stage 1 93 octane map for about two weeks with no problems. Today I decided I'd give the Cobb Stage 1 93 octane map a shot. I drove it during the day about 30 miles with no issues but on the way home tonight it was about 40 degrees out I was in 4th gear doing about 65 and I was WOT and i got the fuel cut and the CEL. I reflashed back to the Perrin map and drove it for a few minutes and didn't get a CEL but I think i'll be staying with the Perrin map and hoping I don't see the problem again.

It looks like the only people that have got the CEL are running Stage 2, but I guess I'm just as susceptible this problem as they are. I just hope I don't have any serious issues.

Subw00er · 03-22-2008, 09:02 PM

I think there is a small learning curve after you flash. A couple days ago, I uninstalled the AP to bring it in for service and today installed it again and loaded the cobb 93 map. I went wot and got the code - scary! I cleared the code via the AP and reflashed again with the cobb 93 map (not sure why I did this, just wanted to make sure if loaded the map correctly I guess) and took it easy for a bit. I should also note that the new map felt quite slow - almost like stock. After driving a few more miles and not going wot it seems fine now (WOT several times and no CEL). I also noticed that if I drive for a few miles after reflashing, then shut the car off for a few seconds, then start up again, it immediately feels stronger. I loaded the cobb map and couldnt figure out why it didnt feel fast. After running for about 15 miles and turning the car off and on a couple times (with miles in between), it feels strong again (breakign traction in first gear is how I gauge whether or not I'm getting full power). I also want to point out that even when my car felt slow, it was indicating 18psi on the AP, but something was just not...right.

I am running a stock car (stage 1).

Not sure if this helps anyone, but just sharing some nuiances I've noticed.

Quote:

Originally Posted by sleepyhead

Well I just got the P0244 code tonight coming home. I had been running the Perrin Stage 1 93 octane map for about two weeks with no problems. Today I decided I'd give the Cobb Stage 1 93 octane map a shot. I drove it during the day about 30 miles with no issues but on the way home tonight it was about 40 degrees out I was in 4th gear doing about 65 and I was WOT and i got the fuel cut and the CEL. I reflashed back to the Perrin map and drove it for a few minutes and didn't get a CEL but I think i'll be staying with the Perrin map and hoping I don't see the problem again.

It looks like the only people that have got the CEL are running Stage 2, but I guess I'm just as susceptible this problem as they are. I just hope I don't have any serious issues.

**Digitalfiend** · 03-22-2008, 09:47 PM

Quote:

Originally Posted by Subw00er

I also want to point out that even when my car felt slow, it was indicating 18psi on the AP, but something was just not...right.

Boost is just one part of the equation for power. If your ECU detects knock, it will start to pull timing, even though boost stays high.

I would be leary of continually overboosting to fuel cut. I haven't looked at the map notes but what is fuel cut set to for stage 1 and stage 2?

sleepyhead · 03-23-2008, 06:11 AM

I was also wondering if anyone running the Perrin maps have encountered the same problem? I just looked over the Cobb stage 1 notes and there was no mention of what the fuel cut is set at.

Subw00er · 03-23-2008, 07:22 AM

Quote:

Originally Posted by Digitalfiend

Boost is just one part of the equation for power. If your ECU detects knock, it will start to pull timing, even though boost stays high.

I would be leary of continually overboosting to fuel cut. I haven't looked at the map notes but what is fuel cut set to for stage 1 and stage 2?

Yes I am aware of this. I have only encountered the overboost code once, yesterday. I was watching the Dynamic Advance closely after it happened. It was either at 0 or 4, which I knew was a little off because I would typically see 0 or 4.5 or 5. I've never seen a negative DA # in my car.

Quote:

Originally Posted by sleepyhead

I was also wondering if anyone running the Perrin maps have encountered the same problem? I just looked over the Cobb stage 1 notes and there was no mention of what the fuel cut is set at.

In my car, i could never get the Perrin map to feel as good as the COBB. It must be something about the tune, but feels really slow compared to the cobb. I did run a couple versions of the Perrin for a week or so, and never did get a overboost - then again, I would only see 16 or 17 max psi, so I never even reached the boost targets.

sleepyhead · 03-23-2008, 08:01 AM

Quote:

Originally Posted by Subw00er

In my car, i could never get the Perrin map to feel as good as the COBB. It must be something about the tune, but feels really slow compared to the cobb. I did run a couple versions of the Perrin for a week or so, and never did get a overboost - then again, I would only see 16 or 17 max psi, so I never even reached the boost targets.

They felt about the same to me and I did some unofficial testing. Basically I raced my buddies saleen, both times 4th gear from 4k to redline into 5th. The outcome was the same from both the cobb and perrin stage 1s.

Also both the perrin and cobb maps both got into the 18 psi for me. I guess this is why everyone says get a protune because everyones car is alittle different as well as location and how hard they drive.

Subw00er · 03-23-2008, 08:39 AM

Quote:

Originally Posted by sleepyhead

They felt about the same to me and I did some unofficial testing. Basically I raced my buddies saleen, both times 4th gear from 4k to redline into 5th. The outcome was the same from both the cobb and perrin stage 1s.

Also both the perrin and cobb maps both got into the 18 psi for me. I guess this is why everyone says get a protune because everyones car is alittle different as well as location and how hard they drive.

Yah, I agree. After I get the stage 2 parts, I'm going for a protune. Now I just need COBB to release the TBE and air box!

CrashOMatic · 03-29-2008, 09:30 PM

I have ran stage 2 for over a week and tonight I got the P0244 code. It was raining heavy, 72 degrees and 100% humid here in the south. From a low pull in 3rd gear it hit lower in the power band around 4800 than I expected. In owning 04 that had the same issues,it would always pop at higher RPM's I think its time for a free flowing muffler and 3in to the downpipe. Now boost and Air fuel meters needed now, and a good tune
Cheers

03-01-2008, 12:24 PM	#16
Qwik06StI Amateur STI Driver Posts: 15 Join Date: Aug 2007 Trader Rating: (0)	Re: '08 STi - CODE P0244 - Overboost I am having the same issue on my 06 STI, Mine doesnt do it till about 5.5k close to 6k. I have a catless invidia dp with a hks catback exhaust. I am also untuned I dont know if that plays a part in it. This ad is not endorsed by this member. Please register or login to hide this ad.

03-07-2008, 08:27 PM	#22
Digitalfiend Super Moderator Car: 08 DGM STI Fav Mod: My wife :) Location: Brooklin, Ontario Posts: 5,144 Join Date: Oct 2003 Trader Rating: (0)	Re: '08 STi - CODE P0244 - Overboost Boost creep is a mechanical issue and not something that an ECU reset is going to fix. The wastegate simply can't evacuate enough exhaust, so the turbine keeps spinning faster, and faster (i.e. producing more boost.) My understanding is that this can occur due to colder air temps and possibly denser air at lower elevations; for instance, you might be fine during the middle of the summer but come winter the problem presents itself. Also, just because there is an overboost fuel cut safety feature, doesn't mean you don't have to worry about boost creep. If you're overboosting, you've got to worry about running out of injector and/or knock events. If you are going to continue running your car with the potential for overboosting, I would highly recommend you datalog to see how your car is managing when it happens. The only real options you have are: - porting the wastegate, though that is not always the best solution - changing the restrictor pill / adjusting the tune (Protune) to have the wastegate open sooner, though this won't always solve the problem because you are still mechanically limited to how much air can get out the wastegate. - go to a divorced wastegate downpipe setup which has a dedicated pipe for the wastegate gases. I had a divorced setup and had no issues with boost creep, even in our cold, cold winters and 1 high-flow cat. I did have boost spikes, but that is a different issue related to the tune (which were solved with a retune.) One last thing you might want to check is that the wastegate isn't blocked and not able to open fully. Some people have had that problem with aftermarket downpipes though it is very rare. Just my two cents.

03-22-2008, 08:20 PM	#23
sleepyhead Junior STI Driver Car: OBP 08 STI Fav Mod: AccessPort Location: NJ Posts: 57 Join Date: Jan 2008 Trader Rating: (0)	Re: '08 STi - CODE P0244 - Overboost Well I just got the P0244 code tonight coming home. I had been running the Perrin Stage 1 93 octane map for about two weeks with no problems. Today I decided I'd give the Cobb Stage 1 93 octane map a shot. I drove it during the day about 30 miles with no issues but on the way home tonight it was about 40 degrees out I was in 4th gear doing about 65 and I was WOT and i got the fuel cut and the CEL. I reflashed back to the Perrin map and drove it for a few minutes and didn't get a CEL but I think i'll be staying with the Perrin map and hoping I don't see the problem again. It looks like the only people that have got the CEL are running Stage 2, but I guess I'm just as susceptible this problem as they are. I just hope I don't have any serious issues.

03-23-2008, 06:11 AM	#26
sleepyhead Junior STI Driver Car: OBP 08 STI Fav Mod: AccessPort Location: NJ Posts: 57 Join Date: Jan 2008 Trader Rating: (0)	Re: '08 STi - CODE P0244 - Overboost I was also wondering if anyone running the Perrin maps have encountered the same problem? I just looked over the Cobb stage 1 notes and there was no mention of what the fuel cut is set at. Last edited by sleepyhead : 03-23-2008 at 06:17 AM.

03-29-2008, 09:30 PM	#30
CrashOMatic Amateur STI Driver Car: Blue Mica 08 WRX STi Fav Mod: KTM 950 Super Enduro Location: Birmingham AL Posts: 22 Join Date: Mar 2004 Trader Rating: (0)	Re: '08 STi - CODE P0244 - Overboost I have ran stage 2 for over a week and tonight I got the P0244 code. It was raining heavy, 72 degrees and 100% humid here in the south. From a low pull in 3rd gear it hit lower in the power band around 4800 than I expected. In owning 04 that had the same issues,it would always pop at higher RPM's I think its time for a free flowing muffler and 3in to the downpipe. Now boost and Air fuel meters needed now, and a good tune Cheers This ad is not endorsed by this member. Please register or login to hide this ad.