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Old 02-23-2013, 08:18 PM   #1
sti_luv_06
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Default will changing my turbo get rid of boost creep!

will changing to a godspeed td05 get rid of my boost creep i have because my stock turbos wasre gate port is to small?
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Old 02-23-2013, 08:21 PM   #2
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Quote:
Originally Posted by sti_luv_06 View Post
will changing to a godspeed td05 get rid of my boost creep i have because my stock turbos wasre gate port is to small?
Impossible to answer. You need to post a boost log with wastegate parameters logged.

A tune alone may fix it.

Also you need more than just a turbo swap to swap a turbo.
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Old 02-23-2013, 08:25 PM   #3
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Originally Posted by ProfessWRX View Post
Impossible to answer. You need to post a boost log with wastegate parameters logged.

A tune alone may fix it.

Also you need more than just a turbo swap to swap a turbo.
even if the turbo is a direct bolt on to factory?
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Old 02-23-2013, 08:31 PM   #4
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Quote:
Originally Posted by sti_luv_06 View Post

even if the turbo is a direct bolt on to factory?
Yes. Before you go looking to modify your car you should really do more research. This should be basic knowledge to anybody planning on swapping any turbo. A tune is the absolute minimum. But there are more things that are suggested. Depends on the turbo.
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Old 02-23-2013, 09:16 PM   #5
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Quote:
Originally Posted by ProfessWRX View Post
Impossible to answer. You need to post a boost log with wastegate parameters logged.

A tune alone may fix it.

Also you need more than just a turbo swap to swap a turbo.
you cannot fix boost creep with a tune.
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Old 02-23-2013, 09:20 PM   #6
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Originally Posted by sc00by4life View Post
you cannot fix boost creep with a tune.
That is true, except most of the time when people experience overboosting, they call it "boost creep" when it really isn't. In those cases, a tune can fix it, since it's really the tune that's the problem in the first place. From what I've seen, true "boost creep" on our cars is pretty rare.
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Old 02-23-2013, 09:39 PM   #7
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Get an ewg, problem solved
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Old 02-23-2013, 09:57 PM   #8
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Getting a godspeed turbo isn't going to fix anything for long.
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Old 02-23-2013, 10:05 PM   #9
the suicidal eggroll
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Getting a godspeed turbo isn't going to fix anything for long.
Sure it would. When that POS ebay turbo explodes and the car ceases to run, he will no longer have any overboosting issues. Problem solved.
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Old 02-23-2013, 10:22 PM   #10
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Originally Posted by the suicidal eggroll View Post
Sure it would. When that POS ebay turbo explodes and the car ceases to run, he will no longer have any overboosting issues. Problem solved.
That is true guess I misstated the facts.
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Old 02-23-2013, 10:31 PM   #11
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Would it not be the catless downpipe causing the boost creep?..freeing up the exhaust gases. Unabomber mentions this in one of his FAQ's i believe.

Is the car tuned for the catless dp?
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Old 02-23-2013, 11:45 PM   #12
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Originally Posted by Wreckingball Man View Post
Would it not be the catless downpipe causing the boost creep?..freeing up the exhaust gases. Unabomber mentions this in one of his FAQ's i believe.

Is the car tuned for the catless dp?
The small wastegate port is what causes real boost creep not the downpipe.
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Old 02-23-2013, 11:54 PM   #13
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Quote:
Originally Posted by sc00by4life View Post

you cannot fix boost creep with a tune.
I was actually alluding to the idea that it is overboosting not creep. So this is moot.
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Old 02-24-2013, 01:40 AM   #14
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YOu can't fix boost creep with a tune, but you CAN let the ECU know how to handle the additional PSI.


Boost creep means your wastegate isn't venting enough, a physical problem, .... but if you tune for the additional boost, you'll be fine.


Engine only go boom if you overboost many many psi.



edit: port your wastegate.
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Old 02-24-2013, 09:19 AM   #15
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Quote:
Originally Posted by Slimsti View Post
Get an ewg, problem solved
^^^This would be the easiest and cheapest way to do it. Buying a new turbo would really be overkill if your goal is to reduce boost.

Like others said. You would have to be at 0% WDC and still getting overboosting for this to be an actual boost creep problem and not a tuning problem. If the tune is off then there is nothing parts can do to fix it.
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Old 02-24-2013, 09:41 AM   #16
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the car is stage 2 but im getting boost creep. it is tuned so i know its not over boosting.
i was going to go with a bigger turbo anyway and have it tuned again. i jut figured either way ill have to take the turbo off. if i just port the waste gate or get a new turbo. but thanks for the answers guys. im still learning
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Old 02-24-2013, 09:45 AM   #17
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the car has ap stage2 map. with the catless dp.
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Old 02-24-2013, 10:36 AM   #18
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Quote:
Originally Posted by sti_luv_06 View Post
the car has ap stage2 map.
Whenever we say to get a tune, we mean a real tune, not an OTS tune that specifically states it is to be used with a catted downpipe. I highly doubt it's boost creep, you just need to get your tune adjusted for having a catless downpipe instead of catted. Or you can try using the LWG version of the Cobb map, that's what it's there for.

Last edited by the suicidal eggroll; 02-24-2013 at 11:07 AM.
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Old 02-24-2013, 10:53 AM   #19
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See my post in the boost creep thread where he pretty much posted the same thing as this thread is asking.
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Old 02-24-2013, 11:17 AM   #20
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Quote:
Originally Posted by sti_luv_06 View Post
the car has ap stage2 map. with the catless dp.
You don't have real boost creep.
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Old 02-24-2013, 05:05 PM   #21
Slimsti
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Get a custom tune. The ots is 1 map for Everyone.
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Old 02-24-2013, 05:58 PM   #22
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I dont think its possible to get boost creap on a td04 on the 2.5 liter.
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Old 02-24-2013, 06:20 PM   #23
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You're running the OTS Map? Download racetuner, increase your wastegate duty correction levels and if you have an aftermarket intake put the stock one back on. That should get rid of the boost creep / overboost. If you have certain years COBB has OTS maps designd for higher flowing intakes and higher wastegate duty cycles. Those should hold you over until you can get a real tune. A 3 port BCS can also help control boost levels better, but you NEED to tune your car for it when you install it.
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Old 02-24-2013, 10:11 PM   #24
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Originally Posted by roadtrip1098 View Post
Download racetuner, increase your wastegate duty correction levels
You mean the turbo dynamics corrections? Absolutely not, unless the OP likes boost oscillation. You don't change the turbo dynamics corrections unless you change the wastegate or boost control solenoid.

Quote:
Originally Posted by roadtrip1098 View Post
If you have certain years COBB has OTS maps designd for higher flowing intakes and higher wastegate duty cycles. Those should hold you over until you can get a real tune.
You know a higher WGDC will make him run MORE boost, right?
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Old 02-25-2013, 12:22 AM   #25
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Quote:
Originally Posted by tunertype View Post

Like others said. You would have to be at 0% WDC and still getting overboosting for this to be an actual boost creep problem and not a tuning problem.
This post sums up 99% of stage 2 over boost threads. A turbo wants to run a certain psi range, and a wastegate can only bypass a certain amount of air. The fuel you are using can only handle so much cylinder pressure (timing, boost, heat, etc combined). Without extra equipment to bypass more air, equipment to control boost more effectively, or higher octane fuel you can only run so much boost.

What most people need is a tune that sets boost (and other variables, obviously) higher than an OTS (Cobb) tune whole keeping it within the waste gates ability to control over boost and boost spikes.

As mentioned, it is only boost creep if the waste gate solenoid is maxed and cannot control boost anymore.
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