[NC2008STI]

I am running a Cobb AP Stage 2 and got my 1st CEL today. Code P0244 / Turbocharger wastegate solenoid A Range/Performance is what the AP said. Cobb said it may be due to an overboost. Justin told me that I would not have to worry about that with the Cobb DP, and yes I am running the one with the cat. I'm looking for advice, should I put the stock DP back on, don't want to hurt the car. Cobb said do a pull in 4th from 2500 RPM and see if it does it again. It didn't sound so good when it did it the 1st time, I would hate to duplicate it again on purpose. I see that other people have had an issue with boost creep with this setup also.

[WESTI]

i have boost spike. not quite the same but its also a problem. Just do what he said and do the pull in 4th from 2500 rpms. If it spools then falls on its face then its time to either consider ewg setup or porting wastegate. Another posibility is that you could use the LWG map that comes with the accessport. It will lower the boost and hopefully at least help the situation.

[GilMikalian]

So you ONLY have the AP Stage 2 and the Cobb catted DP? No air intake mods? No aftermarket cat-back or any other mod to your exhaust? Any other engine mods?

If you only have the AP Stage 2 and the Cobb catted DP, I have the exact same setup you do although I'm on a different map since I live in Cali. Not to insult your intelligence, but confirm that you're on the right map. I can tell you that I have luckily not thrown any CELs despite doing 3d and 4th gear pulls to redline.

The only other solution would be to get a Pro-tune? You would have the benefit of a safe tune AND unlocking some more power.

As for others having boost creep, I'm not aware of any Stage 2 catted problems...if that indeed is the setup you're referring to. The only issue of boost creep with Stage 2 I've read about was when RallySportDirect ran a catless DP, if my memory serves me correct.

[NC2008STI]

Can you tell me what an ewg setup is? What is the LWG Map?

Thanks for your help.

[NC2008STI]

Oh, and no I have not done any other engine mods just the AP stage 2 and the DP with the high flow cat.

[RallySportDirect]

Try a different pill. Cobb has that info in the map notes.

[NC2008STI]

A different "PILL", what is that?

[droideka]

STFA! I posted this last week. Follow my instructions. No problems since then.

CEL in '08 STi

Originally Posted by NC2008STI

I am running a Cobb AP Stage 2 and got my 1st CEL today. Code P0244 / Turbocharger wastegate solenoid A Range/Performance is what the AP said. Cobb said it may be due to an overboost. Justin told me that I would not have to worry about that with the Cobb DP, and yes I am running the one with the cat. I'm looking for advice, should I put the stock DP back on, don't want to hurt the car. Cobb said do a pull in 4th from 2500 RPM and see if it does it again. It didn't sound so good when it did it the 1st time, I would hate to duplicate it again on purpose. I see that other people have had an issue with boost creep with this setup also.

[NC2008STI]

I reset the ECU and reflashed the ecu with the stage 2 93 octane. I hope this works. I would like to get a boost gage but where to put it is the question? Did you get one? Oh and I still don't know what the "Pill" is...

[chmura]

Originally Posted by droideka

STFA! I posted this last week. Follow my instructions. No problems since then.

CEL in '08 STi

So you just reset your ecu? Did it ever come back?

[Digitalfiend]

I put my thoughts here:
'08 STi - CODE P0244 - Overboost

Originally Posted by Digitalfiend

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.

[PunksSTi]

I experienced this CEL just today but I'm on Cobb Stage 1 mapping and completely stock on the car. This CEL will clear after a couple of re-starts of the engine. The ECU still hold the code though. I did not do a rest of the ECU. Maybe it's trying to learn since I only did this reflash a couple of day ago.

Punk