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Old 12-13-2012, 02:38 PM   #1
my06wrx
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TP Tuned @18psi

Default 06 wrx TBE question

Is it a bad idea to run a TBE on a stock turbo without an external waste gate? Ive heard about over boost, but i never seem to spike much past 16psi, and i have been running the stage 2 AP map. And are there any other areas of concern with a TBE on a completely 06 wrx with only the access port stage 2 map?
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Old 12-13-2012, 02:43 PM   #2
be0tch
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Overboost and boost creep seem to be less of an issue with a low wastegate duty cycle tune and especially with a catted downpipe.

Your experience may vary depending if you drive into a very cold weather environment or if you floor it at low rpms in high gear (which can cause overboost, sometimes).

Having said that, EWG will give you a performance increase as well as do a lot to prevent overboost/creep.
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Old 12-13-2012, 02:45 PM   #3
Loyale93
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Lots of people (read: almost everyone) run TBE's without changing the stock turbo out. It's generally referred to as "Stage 2", as you said.

So long as you have it tuned for it (OTS AP map is fine), you're fine. I ran an '04 STi for 4 years on the Cobb Stage 2 with zero problems.
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Old 12-13-2012, 03:20 PM   #4
snowboarder2587
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Quote:
Originally Posted by Loyale93 View Post
Lots of people (read: almost everyone) run TBE's without changing the stock turbo out. It's generally referred to as "Stage 2", as you said.

So long as you have it tuned for it (OTS AP map is fine), you're fine. I ran an '04 STi for 4 years on the Cobb Stage 2 with zero problems.
He was taking about the waste gate not the turbo.
OP you should be fine especially if your downpipe is catted. I think the 08+ models have had more of an issue with boost creep than the earlier models and that is still mostly due to a catless dp because the port on the waste gate couldn't handle the flow rate of the catless system
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Old 12-13-2012, 03:39 PM   #5
Mr Wrex
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Boost spike is a tune problem, boost creep is a mechanical problem. If you get boost creep, an EWG will help alleviate it. Performance gains aren't much on a stock turbo, but it does free up some power that boost creep was robbing you of.

The stage 2 COBB map (I'll assume that's the one you were referring to) is a generic tune and might give you some boost problems, but that's to be expected. Look at getting a protune if you want a little more power from a tune made specifically for your car and climate.
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Old 12-13-2012, 03:40 PM   #6
BoostinChick
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I have an 07' WRX and have been running a TBE with the stock turbo for almost 2-years now.
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Old 12-13-2012, 04:56 PM   #7
my06wrx
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I probably should have mentioned that i have a "CATLESS" downpipe. If the EWG is the way to go, will i have to fabricate my turbo?
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Old 12-13-2012, 05:05 PM   #8
Leafy
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You're fine. When I first put my DP in I left my tune with the stage 1 boost settings, and yes I was making like 1-2 psi above target in the mid range, not spiking. Now I've got a stage 2 tune I threw together on it, and I'm only hitting 19psi instead of 21 so I need to increase my duty cycle in the mid range. But now I've got too much torque for my stock 100k mile clutch, so I havent worked on dialing it in better. Now if you're making more than 12 psi at redline, that tune is either commanding it and is way to aggressive OR you have boost creep, which is a mechanical problem that would be solved with an ewg.
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Old 12-13-2012, 05:05 PM   #9
mtarr07
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Quote:
Originally Posted by my06wrx View Post
I probably should have mentioned that i have a "CATLESS" downpipe. If the EWG is the way to go, will i have to fabricate my turbo?
Huh?

Some cars creep, some dont. In the 2007 and below models, it isn't as prevalent. You said yourself that you're only hitting 16 psi. If that is what the Cobb stage 2 map says is normal, then you are fine.

With a catless downpipe, you are more likely to creep, but it doesn't mean you WILL.
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Old 12-13-2012, 05:14 PM   #10
my06wrx
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Quote:
Originally Posted by mtarr07 View Post
Huh?

Some cars creep, some dont. In the 2007 and below models, it isn't as prevalent. You said yourself that you're only hitting 16 psi. If that is what the Cobb stage 2 map says is normal, then you are fine.

With a catless downpipe, you are more likely to creep, but it doesn't mean you WILL.

I read something about having to drill a hole in the stock turbo for the EWG, and then something like clamping down the stock waste gate. Im all for the EWG, i just really don't want to fabricate anything unless its vital to the cars health.
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Old 12-13-2012, 05:22 PM   #11
sc00by4life
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you heard wrong. you dont need to do it, stop reading about it. if you don't know what you're reading, you'll scare yourself. you dont need to drill ANYTHING to run an external wastegate, you just buy a bracket that holds the wastegate closed and disconnect the vacuum lines. but you dont need to worry about that.

just stop.

you'll be fine. install it, flash a tune, and have fun.
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Old 12-13-2012, 05:42 PM   #12
HinshawWRX
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Stop...just stop. You're not experiencing anything that shows you have creep. Stop worrying about EWG if you don't have one. If you plan to get one, take it to a shop and have them do because they will know what to do.

You are in over your head big here. Calm down, relax, research.
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Old 12-13-2012, 05:48 PM   #13
my06wrx
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2006 WRX CGM
TP Tuned @18psi

Default

Quote:
Originally Posted by sc00by4life View Post
you heard wrong. you dont need to do it, stop reading about it. if you don't know what you're reading, you'll scare yourself. you dont need to drill ANYTHING to run an external wastegate, you just buy a bracket that holds the wastegate closed and disconnect the vacuum lines. but you dont need to worry about that.

just stop.

you'll be fine. install it, flash a tune, and have fun.

Finally something that made sense.
THANK YOU SCOOBY4LIFE!!!! You have made it very clear for me.
I already have the exhaust and a map flashed.
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