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Old 10-07-2010, 12:11 AM   #1
choleaoum
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Default Wastegate Solenoid Delete?

Hey how's it going, it seems that the previous owner deleted the hoses that connected to the wastegate solenoid, what are the symptoms or problems or even REASON why he would do that?
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Old 10-07-2010, 01:04 AM   #2
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It would just cause the turbo to run at wastegate spring pressure. What type of turbo is it? EWG or internal? If it is an external gate, it is pretty common to just get a like 25psi wastegate spring and run no solenoid or boost controller in general. I tend to see evo owners do that a lot with 30/35r turbos.
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Old 10-07-2010, 01:53 AM   #3
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Originally Posted by Corinator View Post
It would just cause the turbo to run at wastegate spring pressure. What type of turbo is it? EWG or internal? If it is an external gate, it is pretty common to just get a like 25psi wastegate spring and run no solenoid or boost controller in general. I tend to see evo owners do that a lot with 30/35r turbos.
Great what a relief, I'm honestly not sure at all but I bought the car like this.. it's the stock TD04 turbo what looks like the stock wastegate as well.
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Old 10-07-2010, 02:37 AM   #4
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Chances are good that he wasn't actually running it that way. For example he may have been running it with an MBC or aftermarket BCS that he kept when he sold the car.

Is the compressor nipple just hooked up up to the actuator? That's actually a pretty safe setup. It leaves you with low boost, so it costs you power, but it's not going to cause any damage.
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Old 10-07-2010, 02:51 AM   #5
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Chances are good that he wasn't actually running it that way. For example he may have been running it with an MBC or aftermarket BCS that he kept when he sold the car.

Is the compressor nipple just hooked up up to the actuator? That's actually a pretty safe setup. It leaves you with low boost, so it costs you power, but it's not going to cause any damage.
Yeah it is, sick I'm not to skimpy about power right now just want my car running great. This is my first subaru so I don't know where the hell anything goes but I know how everything works lol.
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Old 10-07-2010, 04:47 AM   #6
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Originally Posted by choleaoum View Post
Great what a relief, I'm honestly not sure at all but I bought the car like this.. it's the stock TD04 turbo what looks like the stock wastegate as well.
Well with the stock TD04 the wastegate spring should be 7psi iirc and I believe a stock wrx runs 11psi on the factory tune. So you are getting robbed of some power, but like NSFW said, it won't hurt anything. In the future if you get an exhaust, it would be smart to get a grimmspeed boost control solenoid and get it tuned to stage 2. That way you would get more boost (like 17psi, tune dependent) and the boost control solenoid would make your car spool the turbo faster too. So it is basically a win win situation.
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Old 10-07-2010, 12:09 PM   #7
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Originally Posted by Corinator View Post
Well with the stock TD04 the wastegate spring should be 7psi iirc and I believe a stock wrx runs 11psi on the factory tune. So you are getting robbed of some power, but like NSFW said, it won't hurt anything. In the future if you get an exhaust, it would be smart to get a grimmspeed boost control solenoid and get it tuned to stage 2. That way you would get more boost (like 17psi, tune dependent) and the boost control solenoid would make your car spool the turbo faster too. So it is basically a win win situation.
I have a straight pipe exhaust lol and a short ram intake. I should buy that grimspeed boost control solenoid huh, I've heard real good things about there products.
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Old 10-07-2010, 01:45 PM   #8
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Originally Posted by choleaoum View Post
I have a straight pipe exhaust lol and a short ram intake. I should buy that grimspeed boost control solenoid huh, I've heard real good things about there products.
Yeah I personally run one and it made a pretty huge difference in spool. Turbo hits a lot harder with it.
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Old 10-07-2010, 02:36 PM   #9
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Yeah I personally run one and it made a pretty huge difference in spool. Turbo hits a lot harder with it.
Thanks for the help bro appreciate it. I'm going to pick one up soon as soon as I get this car running flawlessly. I just need seats now lol.
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Old 10-07-2010, 06:40 PM   #10
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Quote:
Originally Posted by choleaoum View Post
I have a straight pipe exhaust lol and a short ram intake. I should buy that grimspeed boost control solenoid huh, I've heard real good things about there products.
Quote:
Originally Posted by Corinator View Post
Yeah I personally run one and it made a pretty huge difference in spool. Turbo hits a lot harder with it.
Thats great to hear, awesome!

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Originally Posted by choleaoum View Post
Thanks for the help bro appreciate it. I'm going to pick one up soon as soon as I get this car running flawlessly. I just need seats now lol.
Hey well let us know if you have any questions at all, we are here to help! Feel free to call us too if you want to order that way, otherwise you can check out one of our many dealers that carry these! Importimageracing.com, rallysportdirect, jscspeed, etc... you might even get a sweet deal through them!!

I promise you will not be dissapointed, and install is a breeze

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Old 10-07-2010, 09:56 PM   #11
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Originally Posted by choleaoum View Post
Thanks for the help bro appreciate it. I'm going to pick one up soon as soon as I get this car running flawlessly. I just need seats now lol.
MAKE SURE YOU GET A TUNE for the new boost solenoid. The EBCS (like the Grimmspeed) typically need at least 1/3 less wastegate duty cycle compared to the stocker.

If you don't get a tune, you'll be overboosting pretty badly and could be risking your motor.
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Old 10-08-2010, 12:55 AM   #12
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Originally Posted by phlegmon View Post
MAKE SURE YOU GET A TUNE for the new boost solenoid. The EBCS (like the Grimmspeed) typically need at least 1/3 less wastegate duty cycle compared to the stocker.

If you don't get a tune, you'll be overboosting pretty badly and could be risking your motor.
I would also like to add that you need a real personalized tune, not just an off the shelf stage 2 map like the Cobb AP2. Get an e-tune, dyno tune, or personalized map of some sort.
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Old 10-08-2010, 02:51 PM   #13
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um, with no line running to the wastegate you're going to OVERboost to whatever it takes for the exhaust to force the wastegate open. To run at wastegate pressure you need to run a vacuum line directly from the compressor port to the wastegate.
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Old 10-09-2010, 04:32 AM   #14
Corinator
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Originally Posted by Harman Motive, Inc. View Post
um, with no line running to the wastegate you're going to OVERboost to whatever it takes for the exhaust to force the wastegate open. To run at wastegate pressure you need to run a vacuum line directly from the compressor port to the wastegate.
I just assumed it was hooked up. I figured it wouldn't be left just completely disconnected. I figured what he meant by solenoid delete was that the solenoid was removed but the line was kept.
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Old 10-09-2010, 01:42 PM   #15
choleaoum
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I just assumed it was hooked up. I figured it wouldn't be left just completely disconnected. I figured what he meant by solenoid delete was that the solenoid was removed but the line was kept.
It's wired correctly, the compressor to the wastegate or w.e lol. There's no more T in between the line.
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