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Old 11-21-2012, 11:11 AM   #76
xluben
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When reinstalling you should remove the rubber end cap from the throttle body to intercooler coupler. Remove it from both sides if possible. These pop off and cause leaks eventually. The sooner you can remove them the better. It also makes install much easier.
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Old 11-21-2012, 03:50 PM   #77
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Quote:
Originally Posted by xluben View Post
When reinstalling you should remove the rubber end cap from the throttle body to intercooler coupler. Remove it from both sides if possible. These pop off and cause leaks eventually. The sooner you can remove them the better. It also makes install much easier.
wait...I'm unclear on what you're saying here...

"these pop off and cause leaks"

but you're saying we should remove them first? So what's the difference between us removing them or them popping off on their own...they're gone either way, right??

Can you clarify for me, and whomever else here is not as experienced with these cars as you are? Thanks!
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Old 11-21-2012, 07:00 PM   #78
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Its the rubber end pieces around the ends of the throttle body to tmic hose. Its the one closest to the driver side fender. It is prone to causing a boost leak. If you have a bad enough boost leak it will sound similar to an intake on your car. Pressurized air leaks out and lowers the psi levels going to your engine.

Last edited by HeroCrank; 11-21-2012 at 07:15 PM.
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Old 11-21-2012, 07:55 PM   #79
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No, it isn't prone to causing boost leak, it's prone to causing the entire coupler to blow off the throttle body. I suppose that could be considered a massive boost leak, but you get my point.
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Old 11-21-2012, 08:13 PM   #80
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im not sure what they are talking about^^ (dont understand)... but i used just a little touch of silicon grease and the tmic slips on and off no issues.
i figure if it pops one of the hoses off... ill just clean it off and put it back on.
no issues so far and it flop on and off with ease.
(and yes, dont use oil on silicon)
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Old 11-24-2012, 08:48 PM   #81
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Quote:
Originally Posted by hutch959 View Post
im not sure what they are talking about^^ (dont understand)... but i used just a little touch of silicon grease and the tmic slips on and off no issues.
i figure if it pops one of the hoses off... ill just clean it off and put it back on.
no issues so far and it flop on and off with ease.
(and yes, dont use oil on silicon)
keep an eye on your TMIC, and really glad that you solved your issue. How much boost are you running?
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Old 11-24-2012, 09:43 PM   #82
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about 19. and i hand tighten the clamps just using an extension ... no ratchet.
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Old 11-25-2012, 10:41 PM   #83
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Quote:
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about 19. and i hand tighten the clamps just using an extension ... no ratchet.
I hadnt had any troubles with mine until I ran 19 psi as well.
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Old 11-26-2012, 10:01 AM   #84
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Quote:
Originally Posted by hutch959 View Post
im not sure what they are talking about^^ (dont understand)... but i used just a little touch of silicon grease and the tmic slips on and off no issues.
i figure if it pops one of the hoses off... ill just clean it off and put it back on.
no issues so far and it flop on and off with ease.
(and yes, dont use oil on silicon)
This is probably one of the worst things you could do. It will just make it slide off more easily. Some people get lucky and it stays on for a long time, but it will probably fail eventually. And sometime it can pop off enough that the car is undriveable and you're stuck on the side of the road. Taking off the rubber caps is easy security against this failure. The caps are there for alignment. If you take the caps off and then properly install the hose without them, it should never come off (I run mine at 27psi).
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Old 11-26-2012, 12:26 PM   #85
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sorry does anyone have a picture of this hose that pops off? I'm looking around the engine bay and i'm not sure what i'm looking for.
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Old 11-27-2012, 10:02 PM   #86
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sorry does anyone have a picture of this hose that pops off? I'm looking around the engine bay and i'm not sure what i'm looking for.
Its hooked to the tmic drivers side. Black in color. You can find it.
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Old 11-28-2012, 05:40 AM   #87
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HeroCrank I would like to see some thermal images of a properly shielded TMIC vs a FMIC.
I have a hunch that the FMIC might get more heat soaked due to its proximity to the radiator. I need data though and you are the man with the nice camera.
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Old 11-28-2012, 09:23 AM   #88
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HeroCrank I would like to see some thermal images of a properly shielded TMIC vs a FMIC.
I have a hunch that the FMIC might get more heat soaked due to its proximity to the radiator. I need data though and you are the man with the nice camera.
Its very hard for me to get people to let me infrared their cars without paying them or giving them something. Hell I can't seem to find anyone to let me infrared their OEM heat shield set up for comparison up here. But all things aside, I am totally game for that, just arrange something with someone with a fmic. A manufacturer that is willing to participate in a heat soak study, that will donate the product maybe?? I personally do not know anyone in the state with a fmic that will be willing to help out.

Last edited by HeroCrank; 11-28-2012 at 09:40 AM.
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Old 11-28-2012, 09:34 PM   #89
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Quote:
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This is probably one of the worst things you could do. It will just make it slide off more easily. Some people get lucky and it stays on for a long time, but it will probably fail eventually. And sometime it can pop off enough that the car is undriveable and you're stuck on the side of the road. Taking off the rubber caps is easy security against this failure. The caps are there for alignment. If you take the caps off and then properly install the hose without them, it should never come off (I run mine at 27psi).
yea... yea... i know.
but it aint popped off yet... and i can slide my intecooler on and off with massive ease.
and i keep my socket and extention in the car in case it comes off and ill just put it back on.

and you know what? if it does pop off.. ill clean off the houses and put it all back together.
no biggie either way.
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Old 12-01-2012, 06:43 AM   #90
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I have a question that may or may not have been answered before. Bought PTP turbo blanket & Wrap for DP. My DP is catted Invidia. Is it OK/good to wrap the catalytic converter? Seems it would help it to function more efficiently. Does it?
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Old 12-01-2012, 07:41 AM   #91
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I have a question that may or may not have been answered before. Bought PTP turbo blanket & Wrap for DP. My DP is catted Invidia. Is it OK/good to wrap the catalytic converter? Seems it would help it to function more efficiently. Does it?
This could cause lots of problems... CELs, damaged sensors, fires, etc. Just wrap ahead of the cat.
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Old 12-01-2012, 12:23 PM   #92
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This could cause lots of problems... CELs, damaged sensors, fires, etc. Just wrap ahead of the cat.
ceramic coat it.
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Old 12-01-2012, 02:27 PM   #93
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This could cause lots of problems... CELs, damaged sensors, fires, etc. Just wrap ahead of the cat.
Ahead of cat is only about 8". Doesn't seem like it would help very much.

I'm not wrapping sensors. The cat in the Invidia DP is a high-flowing 'racing' type, not the stock ones.

Ebranch, do you have experience with this or someone you know?

Thanks.
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Old 12-01-2012, 09:31 PM   #94
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Quote:
Originally Posted by Ebranch View Post
This could cause lots of problems... CELs, damaged sensors, fires, etc. Just wrap ahead of the cat.
can you elaborate in more detail of the issues that can stem from wrapping the cat please?
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Old 12-02-2012, 12:43 AM   #95
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No first hand experience... I've only wrapped headers before, but I worked for Bosch for 5 years. The cat is meant to dissipate heat; wrapping will retain this heat and elevate inside temps which would push your o2 sensor out of its operating range. This wouldn't happen in, say, a 10 minute commute, but hot summer days or tracking would pose a threat to your sensor. In EXTREME situations, this could cause a fire although unlikely.

I don't see any benefit to be gained from wrapping the catalytic converter.... Just my opinion.
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Old 12-02-2012, 01:10 AM   #96
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Sounds logical. Thanks for the detailed answer.
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Old 12-02-2012, 03:12 PM   #97
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No first hand experience... I've only wrapped headers before, but I worked for Bosch for 5 years. The cat is meant to dissipate heat; wrapping will retain this heat and elevate inside temps which would push your o2 sensor out of its operating range. This wouldn't happen in, say, a 10 minute commute, but hot summer days or tracking would pose a threat to your sensor. In EXTREME situations, this could cause a fire although unlikely.

I don't see any benefit to be gained from wrapping the catalytic converter.... Just my opinion.
Catalytic converters are not meant to dissipate heat at all... Manufacturers go to great lengths to keep heat in the cat, because it must be a certain temperature to operate properly. It is possible to overheat them though and I have no experience wrapping around then.
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Old 12-02-2012, 06:16 PM   #98
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Thanks for your responses.

As I understand it, automotive manufacturers, in the interest of lowering emissions, want the catalytic converter to reach operating temperature as quickly as possible. Also, I believe they operate at something like 1400F. It seems to me that with it wrapped with the lava wrap (not treated fiberglass), the cat would light off faster, but I just can't imagine that it could retain enough heat to melt the catalyst itself. Do you really think wrapping will push the HO2S past its operating range?

Can we see infrared images of a wrapped vs unwrapped aftermarket (like Invidia) Catted DP, please? If I were close, I'd volunteer my cr for these tests.

Thanks
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Old 12-02-2012, 07:32 PM   #99
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Quote:
Originally Posted by '08WRXRider View Post
Thanks for your responses.

As I understand it, automotive manufacturers, in the interest of lowering emissions, want the catalytic converter to reach operating temperature as quickly as possible. Also, I believe they operate at something like 1400F. It seems to me that with it wrapped with the lava wrap (not treated fiberglass), the cat would light off faster, but I just can't imagine that it could retain enough heat to melt the catalyst itself. Do you really think wrapping will push the HO2S past its operating range?

Can we see infrared images of a wrapped vs unwrapped aftermarket (like Invidia) Catted DP, please? If I were close, I'd volunteer my cr for these tests.

Thanks
Infrared testing volume 2 shows the differences between a wrapped and unwrapped downpipe. However the cat is not wrapped and is at the end of the dp. (Cobb)
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Old 12-03-2012, 02:23 AM   #100
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Thanks, HeroCrank, for your suggestion & for all these informative photos/threads. I'll definitely check out #2.


However, I was referring to testing the cat portion being wrapped vs not.
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