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Old 12-02-2011, 01:30 PM   #1
Frozt
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Default Help Needed - '09 WRX TB to IC hose issues

Running cobb stage 1 93-MT with minor mods, when hitting target boost around 16-17 I am routinely having issues with the hose between the throttle body and IC tearing or blowing off (was found torn the first time, now it sounds/feels as though it's come off again recently).

I'm looking for recommendations on an aftermarket TB to IC hose (or hose kit) that would work on an 09 (08-11) WRX. I've been searching around and haven't been able to find anything.

Hoping to swap the hose to something more durable, as well as move from standard screw clamps to T-clamps.

Thanks for any recommendations!
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Old 12-02-2011, 01:42 PM   #2
jay25RS
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did you remove the rubber 'end caps' from the hose? I was running stg 2 on my 2010 WRX and I removed those and NEVER had a problem.
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Old 12-02-2011, 01:44 PM   #3
Frozt
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Originally Posted by jay25RS View Post
did you remove the rubber 'end caps' from the hose? I was running stg 2 on my 2010 WRX and I removed those and NEVER had a problem.
I didn't. I'll have to try that this evening and see if that fixes things. The car sounds like a clown car right now when I hit peak boost and air is escaping nearest the TB. Kind of pathetic sounding
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Old 12-02-2011, 01:58 PM   #4
BTomp6754
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I have the same damn problem with my 09... It first occured while still under warranty so it was fixed and the dealer has a parts warranty on all their stuff so i just keep bringing it back to the dealer to get fixed for free. I def need a long term solution as well though. The last time i went in they looked around and ended up taking off my BPV and claiming that the gasket was missing causing the issue... i have personally never removed or had it removed so i highly doubt that to be true but o well. Even after the gasket under the BPV was replaced i still notice a leak but havent had a chance to bring my car back to the dealership again.
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Old 12-02-2011, 02:03 PM   #5
xluben
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Quote:
Originally Posted by jay25RS View Post
did you remove the rubber 'end caps' from the hose? I was running stg 2 on my 2010 WRX and I removed those and NEVER had a problem.
Yep, do this, and then clamp it back down nice and tight and you shouldn't ever have problems with that hose ever again. Will hold 25+psi with the end caps removed. If you want even more security, reinstall with T-bolt clamps instead of the OEM worm clamps.
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Old 12-02-2011, 02:03 PM   #6
Frozt
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Quote:
Originally Posted by BTomp6754 View Post
I have the same damn problem with my 09... It first occured while still under warranty so it was fixed and the dealer has a parts warranty on all their stuff so i just keep bringing it back to the dealer to get fixed for free. I def need a long term solution as well though. The last time i went in they looked around and ended up taking off my BPV and claiming that the gasket was missing causing the issue... i have personally never removed or had it removed so i highly doubt that to be true but o well. Even after the gasket under the BPV was replaced i still notice a leak but havent had a chance to bring my car back to the dealership again.
Yeah, I took it to the dealership the first time out of laziness. I almost never let dealerships or elsewhere work on my rides, but I admit I was a slacker and didn't want to jack with taking of the IC, etc.

Anyways, I took it to them telling them exactly where the problem was. After two times of them saying they fixed it and me taking them on test drives, they fixed it. The first two times they made it worse.

Two weeks after that it happened again, and I've basically been fighting it since. Between that and the driver's side blinker going crazy and them constantly 'fixing' it only to have it go rapid blink again, I've had it with the techs at the local Subaru.

A long term aftermarket solution would be great. I may just upgrade the IC in the mid-term as a solution, but don't really want to right now around the holidays.
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Old 12-02-2011, 02:04 PM   #7
Frozt
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Quote:
Originally Posted by xluben View Post
Yep, do this, and then clamp it back down nice and tight and you shouldn't ever have problems with that hose ever again. Will hold 25+psi with the end caps removed. If you want even more security, reinstall with T-bolt clamps instead of the OEM worm clamps.
What size t-bolt clamps are used on this hose? 3in or 4in ID? I couldn't tell when I was working in the small confines of the engine bay last time I looked at it.

Thanks for the tip on the boost capabilities on it. Definitely reassuring.
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Old 12-02-2011, 02:08 PM   #8
Power6
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Stock intercooler? Everything fit great for me with the stock TMIC, it was going aftermarket, both Perrin and AVO make the whole thing harder to fit. It is so bad with the AVO stretching the stock hose, I just ordered the AVO hose becuase it is a bit longer to fit their TMIC better.

You should be alright if you take out the rubber donuts, gives you more room to work the Intercooler around and the Legacy guys have been tossing them aside since 2005.
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Old 12-03-2011, 08:38 PM   #9
sizemic1
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Picked up one of these recently. Works perfectly.
http://shop.edoperformance.com/tomio...r-p-27907.html

PM Edo Performance for the Nasioc good guy discount.
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Old 12-03-2011, 09:12 PM   #10
jay25RS
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If you just remove the rubber 'donuts' it will NOT fall off anymore. You do not need an expensive aftermarket hose or anything else.

If anyone feels like wasting money, don't listen to my advice.
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Old 12-03-2011, 10:22 PM   #11
Frozt
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I'm not planning on wasting any money on an aftermarket now that I know this. I didn't know about the donuts option / 'issue'.

Anyone know what size clamps these pieces take off hand? I think I have some 3" ID t-clamps sitting around in the garage, but if it's another size I'll need to pick-up/order-some. I definitely want to get away from stock screw-clamps as they're prone to failure regardless of the situation from prior history.

thx
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Old 12-04-2011, 02:11 PM   #12
Tripintaz
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option #1 - remove donut ends, purchase t-bolt clamps, install and never worry again.

option #2 - Buy an aftermarket hose such as the AVO and get t-bolt clamps. Smoother and better flow capabilities. However it is unlikely it will produce any gains over option #1. Bt I chose to do this and have had no issues boosting up to 21 psi.
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