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Old 11-23-2012, 03:42 PM   #1
OxCitywrx09
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Default 2013 TMIC to TB Coupler Issues

Last night I was driving WOT up a grade to pass someone then all of a sudden my turbo spool got really loud with a loss of some power. After some research I found that the coupler has gotten loose on the TB. So today I took off the tmic but I can't get the coupler back on. I was wondering if any of you knew an easier way or a trick to get the coupler to slide on easier. I was thinking it needed some kind of lube but I didn't want to do that as it is right next to the TB.

Thanks in advanced for your help

-James

EDIT: issue fixed on pg. 2
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Last edited by OxCitywrx09; 12-01-2012 at 05:01 PM.
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Old 11-23-2012, 03:48 PM   #2
drewvdw
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Take the sleeve off of the coupler, it's on the throttle body side of the coupler. It shouldn't be too difficult to do.
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Old 11-23-2012, 03:56 PM   #3
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Thanks, I did just that now the coupler sits on the TB great. Should I take off the sleeve for the tmic too?
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Old 11-23-2012, 04:48 PM   #4
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Yes.

Use hairspray as a lubricant to get the hose on. When it dries it acts as an adhesive.
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Old 11-23-2012, 05:07 PM   #5
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Mine didn't have a sleeve to the TMIC...If it has one, go for it.
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Old 11-24-2012, 08:47 PM   #6
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Thanks for all of the tips. I thought removing and reinstalling the tmic was going to be easy. I thought wrong. hahahaha.
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Old 11-24-2012, 10:14 PM   #7
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^hey man im from ventura county, we have a subie meet every sat night around 9ish in camarillo del taco of las posas. Come stop by.
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Old 11-25-2012, 02:51 AM   #8
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Quote:
Originally Posted by 2011dubrx View Post
^hey man im from ventura county, we have a subie meet every sat night around 9ish in camarillo del taco of las posas. Come stop by.
That sounds great. I might be free next week so I will try to come and swing by!

I went out tonight to do some test pulls and I don't think I am hitting max boost now. Under WOT, I hit 15psi, then it tapers and stays at 13psi. From what I remember it should be at 14psi. I don't know if that is just me being paranoid, or is one psi a big deal? I will have to check it out tonight and make sure everything is seated properly. I didn't want to over torque some things so something might be loose. Is it normal to be at 13psi ?!
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Old 11-25-2012, 09:23 AM   #9
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I've noticed the same thing on my 2013 wrx as well except that it seems to sit around 10-11 psi and then usually I'm going to fast on roads i shouldn't be so i don't look at it again.

I've asked around and it seems to be normal just due to the nature of the waste-gate on these cars and what not, but i could be wrong feel free any one to correct me.
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Old 11-25-2012, 10:44 AM   #10
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This is a very common problem. If you don't plan to upgrade the tmic I'd suggest replacing that hose with an aftermarket one like the AVO.
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Old 11-25-2012, 01:15 PM   #11
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So am I at a good boost pressure or do I need to replace that hose to be back at 14psi ?
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Old 11-25-2012, 02:31 PM   #12
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If you remove the caps from both ends of that hose, you should not have to replace it. I run 27psi with the stock hose.

The stock turbo normally tapers at higher rpm. Unless you do a full 2k-redline pull and datalog it you won't know for sure if you're hitting your targets.
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Old 11-25-2012, 03:07 PM   #13
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Quote:
Originally Posted by xluben View Post
If you remove the caps from both ends of that hose, you should not have to replace it. I run 27psi with the stock hose.

The stock turbo normally tapers at higher rpm. Unless you do a full 2k-redline pull and datalog it you won't know for sure if you're hitting your targets.
Thanks for the input Ben. I think I will be good for now as I have no means of data-logging, and the car feels great. The coupler seems to be holding on after going wot a few times. Ill probably go for a few more pulls later today to see if it will still hold up. If not I will have to try the hairspray trick.

The hairspray won't effect anything with the motor? I am just a little concerned because this is the coupler that attaches directly to the TB and I would think that you would want to keep any kind of chemical away from it for the sake of the motor.
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Old 11-25-2012, 03:11 PM   #14
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Quote:
Originally Posted by OxCitywrx09 View Post
Thanks for the input Ben. I think I will be good for now as I have no means of data-logging, and the car feels great. The coupler seems to be holding on after going wot a few times. Ill probably go for a few more pulls later today to see if it will still hold up. If not I will have to try the hairspray trick.

The hairspray won't effect anything with the motor? I am just a little concerned because this is the coupler that attaches directly to the TB and I would think that you would want to keep any kind of chemical away from it for the sake of the motor.
i hairsprayed mine. its been good since.those endcaps are terrible from the factory.
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Old 11-25-2012, 03:22 PM   #15
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Sounds great. I agree.. My coupler came right off when I removed the TMIC. It sure was a pain trying to get that thing back on tho lol.
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Old 11-25-2012, 07:20 PM   #16
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I went out for some 1-3rd gear pulls and noticed a few things. From first to second I heard a squeak or chirp sound. And it seemed to be fine from second to third. When I got home I popped the hood and found the coupler to become slightly unseated. I think I am going to buy the avo coupler and some t bar clamps just for extra assurance.

I am planning on going stage 2 as soon as cobb releases the 2013 software so I think it would be a good thing to do.
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Old 11-25-2012, 07:49 PM   #17
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Not necessary, but certainly not a bad idea. Just like a Forge (or other quality) BPV on an 08+ WRX after upping boost pressure.
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Old 11-25-2012, 10:36 PM   #18
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This is kind of a long shot, but do any of you guys have a picture of the coupler with t bolts installed? I am curious to see how to position it since it will be a tight fit in there. I remember seeing it on a post a few days ago, however I can't seem to find it anywhere. I put in my order for 2 2.75" T bolts today and they should be here sometime this week and I couldn't find anything on how to position them.
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Old 11-25-2012, 10:40 PM   #19
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Quote:
Originally Posted by Mike 01Hawk View Post
No point in wiping the oil away, it'll just come back

As for those 'socks', I think it has to do with an engine safety feature. They are meant to blow @ like 18psi or something low like that so you don't over-boost your engine. Go figure.

As for T-Bolt clamps, they were a SOAB to get them lined up, but after a lot of fiddling here's how I have mine situated.

Good luck





Found it! haha...
Here is the link to the thread to where I found the information.
http://forums.nasioc.com/forums/show...6#post38169596

It is amazing to see how many people have this issue straight from the factory.

Last edited by OxCitywrx09; 11-25-2012 at 10:42 PM. Reason: Added some information.
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Old 11-25-2012, 10:55 PM   #20
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I haven't swapped over to T bolt clamps, but I have gotten stronger worm clamps when mine failed. Damn auto parts stores around here don't carry T bolt clamps.
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Old 11-25-2012, 11:03 PM   #21
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I didn't even bother to go to autozone or o'reilly's store around here. I just picked up the clamps from rallysport direct. I like their customer service, and buying out of state saves me from tax, so I can justify buying more parts haha :P.

http://www.rallysportdirect.com/ATP-...t-Clamp-2-75in
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Old 11-26-2012, 03:33 AM   #22
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I had some downtime today so I decided to give it another try. It looked like I had the coupler on backwards. Put everything back together and now there is a loud whistle and even lower boost. FML... I will just have to wait for my parts to come in the mail now
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Old 11-26-2012, 07:02 AM   #23
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go to the dealer.
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Old 11-26-2012, 09:58 AM   #24
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Did you remove the rubber caps from both ends? If you do that, and install it properly, you should not have any issues. The AVO is actually a hair shorter than stock, so it can make the problem worse. I would just use the OEM hose with T-bolt clamps and no rubber end caps.
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Old 11-26-2012, 02:47 PM   #25
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That is really good to know. I would've thought the avo would be the same length. I did remove the end caps and the alignment of the tmic gets tricky since the coupler loses about a 1/4 inch in length without those rubber ends. I need to look everything over again tonight. Hopefully everything goes well. Hopefully i can put this behind me soon ! Thanks for the info.
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