Welcome to the North American Subaru Impreza Owners Club Friday October 20, 2017
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Water/Methanol Injection, Nitrous & Intercooler Cooling

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 01-11-2015, 09:11 AM   #1
Overland04
Scooby Specialist
 
Member#: 293311
Join Date: Sep 2011
Chapter/Region: NESIC
Location: Coast of Maine
Vehicle:
2013 FXT 6-Speed
Obsidian Black Pearl

Default Perrin Front Mount Intercooler Install | 08-14 WRX/STi

Hi all,

This DIY install is for mounting of the Perrin front mount on to a 08-14 Subaru Impreza WRX / STi. I will be installing the intercooler on a 2011 WRX but a lot of the images will help assist in other models as well. This kit is their standard kit with a silver core, black boost tubes and black couplers.

No special tool are needed for the install, just basic hand tools.

Sockets/wrenches

10mm, 12mm, 7/16, flat head, channel locks, scissors, utility knife, dremmel or hacksaw, and pick up some copper high-temp gasket maker.

Here is the completed images:






Start your install by removing the bumper. There a few write-ups on how to do this so I'll keep this write up focused on the install.

Once removed you'll be looking at this:



Remove bumper beam by taking out the 8 12mm bolts (save bolts)



There are tabs that need to be removed on the lower radiator support. I used a cut-off wheel on my dremmel but a hacksaw will work too. Once cut, I used an undercoating spray to protect the raw metal. After the paint dried, I added the rubber gasket material that they supplied. There was some trimming involved to make the gasket sit flush.





Now you can loosely mount the intercooler core using the OEM 12mm bolts form the bumper beam.



Now it's time to remove the stock top mount intercooler. Remover the 2 10mm bolts that hold on the BPV and use channel locks to pop off the recirculation hose. Then remove the 12mm bolts holding on the core. The hose clamps are the most tricky but a flat blade scredriver or 5/16" socket will get them out. Removing the 10mm bolts that hold on the BPV hose to the intake manifold will give you better access to the throttle body clamp and coupler. After the IC is removed, take out the OEM coolant reservoir by un-clipping the plastic tab and slide it forward.





Now that everything is removed, it's time to add the intercooler piping.
Start by adding high-temp gasket maker to the Perrin turbo adapter and mount it to the stock turbo using the 2-12mm bolts that you removed from the stock TMIC.

* Registered users of the site do not see these ads.

Last edited by Overland04; 01-11-2015 at 11:48 AM.
Overland04 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 01-11-2015, 09:12 AM   #2
Overland04
Scooby Specialist
 
Member#: 293311
Join Date: Sep 2011
Chapter/Region: NESIC
Location: Coast of Maine
Vehicle:
2013 FXT 6-Speed
Obsidian Black Pearl

Default

There is some minor trimming that needs to be done on the driver side fender liner / underbelly cover to fit the piping through it. I used a dremmel with a drill bit. You can use scissors or shears if you don't have a dremmel.



From there, I didn't have to do any other trimming to get the Intercooler piping to fit. Use the image below to guide you through the routing of the pipes. The kit comes with all the t-bolt clamps needed. Perrin has custom brackets for the horn and headlight resistor. I don't have those on my car (removed previously) so I didn't need to move them.
The stock air box will have to be removed in order to run the piping through the passenger side fender well. Perrin also recommends using their intake, but I was able to use my COBB intake with a little trimming and bending of the holding bracket. I think most cold-air aftermarket intakes will work, (perrin, AEM, KS-Tech, etc)

I left all the t-bolt clamps slightly loose until all the piping was fitted to my liking.





The coolant overflow came with it's own instructions so there may or may not be a separate write up for that, but I basically did exactly what the directions said and it took about 5 minutes to install.
The OEM ram air setup still worked well but needed a slight trimming to fit.

The bumper trimming was simple. Because the core is so big, you can trim of the large unpainted strip on top and only have to trim a straight cut along the bottom.
I cut the top black section off from behind using a new, sharp utility knife/blade.

For the bottom cut, I used a 1-3/4" straight edge/ruler and held it against the intercooler. It basically makes a straight cut that is the width of the ruler. Mark with a sharpie.





Then I used the same width tape to continue the line up the sides of the bumper (not shown)

Once the lines were made, I used a new, sharp utility blade and very lightly cut on the line around the bumper.
Then cut again on the line, then cut again on the line, then cut again on the line until it cuts through. Don't force the cut, don't pull like a mad man. Take your time and cut small layers at a time.

Finished cuts:





Lastly you'll need to cut the drivers side fog light around the piping. There are two 10mm bolts that hold light into the bumper. I cut one of the two off which gives you enough space but still holds the light solid.



Here are the finished images again. I'm very happy with the quality and fitment of the intercooler. If you have any questions, please ask them in the thread. All PM questions will be ignored.





Thanks!!
Overland04 is offline   Reply With Quote
Old 01-11-2015, 09:29 AM   #3
Tubtub
Scooby Newbie
 
Member#: 386135
Join Date: Mar 2014
Chapter/Region: South East
Location: Florida
Vehicle:
2014 Impreza WRX
ISM

Default

clean install
Tubtub is offline   Reply With Quote
Old 01-12-2015, 01:15 PM   #4
no694terry
Scooby Specialist
 
Member#: 220816
Join Date: Aug 2009
Location: Pittsburgh PA
Vehicle:
98 Forester S/t
all the mods!

Default

Nice! I always wondered about the FMIC type's that had the inlet and outlet's up top, are you worried about oil or condensation building up in the bottom until one day pressure just pushes some of it into the intake?
no694terry is offline   Reply With Quote
Old 01-18-2015, 07:32 AM   #5
Overland04
Scooby Specialist
 
Member#: 293311
Join Date: Sep 2011
Chapter/Region: NESIC
Location: Coast of Maine
Vehicle:
2013 FXT 6-Speed
Obsidian Black Pearl

Default

Here is a close up of the COBB intake with the OEM ram air shroud taken off. It shows the how far I cut the COBB hose back, the coolant reservoir, and hot side piping going through the passenger fender well.

Overland04 is offline   Reply With Quote
Old 01-18-2015, 07:36 AM   #6
Overland04
Scooby Specialist
 
Member#: 293311
Join Date: Sep 2011
Chapter/Region: NESIC
Location: Coast of Maine
Vehicle:
2013 FXT 6-Speed
Obsidian Black Pearl

Default

Quote:
Originally Posted by Tubtub View Post
clean install
Thank you!

Quote:
Originally Posted by no694terry View Post
Nice! I always wondered about the FMIC type's that had the inlet and outlet's up top, are you worried about oil or condensation building up in the bottom until one day pressure just pushes some of it into the intake?
I had blow by in my top mount and never really hurt anything in over two years of operation. If I did have the same blow by issue with the front mount, It would take a long time before it came to be a problem.

I slightly overfill my oil so I always get slight blow by in the intake run.
Overland04 is offline   Reply With Quote
Old 01-19-2015, 06:44 PM   #7
bmxhotsauce
Scooby Specialist
 
Member#: 127099
Join Date: Sep 2006
Chapter/Region: BAIC
Vehicle:
02 IMPERZA WRX
BLACK

Default

install looks good. perrin does make really nice quality product. i like you kept the COBB INTAKE. might have to do that to my GFs 08 wrx when she goes to a FMIC.
bmxhotsauce is offline   Reply With Quote
Old 01-23-2015, 08:33 AM   #8
1wrxtra
Scooby Specialist
 
Member#: 316364
Join Date: Apr 2012
Chapter/Region: MAIC
Vehicle:
2012 WRX

Default

Have you thought about getting new piping that runs counter-clockwise? The design of going clockwise and having the cold-side piping sit right above the turbo seems to significantly increase the amount of piping you need and reduces the benefit of having such a large cored IC. I imagine in stop and go traffic the pre-throttle body piping gets pretty hot...

It looks like you still have the heatshield, do you also have a turbo blanket? Or can you please comment on how hot that pipe gets if the car idles for a little while?

You've been around a while and contributed quite a bit to the forum, just curious on what your thoughts are; not trying to demean your IC choice... There's a lot of great information here.
1wrxtra is offline   Reply With Quote
Old 01-23-2015, 12:00 PM   #9
bmxhotsauce
Scooby Specialist
 
Member#: 127099
Join Date: Sep 2006
Chapter/Region: BAIC
Vehicle:
02 IMPERZA WRX
BLACK

Default

Quote:
Originally Posted by 1wrxtra View Post
Have you thought about getting new piping that runs counter-clockwise? The design of going clockwise and having the cold-side piping sit right above the turbo seems to significantly increase the amount of piping you need and reduces the benefit of having such a large cored IC. I imagine in stop and go traffic the pre-throttle body piping gets pretty hot...

It looks like you still have the heatshield, do you also have a turbo blanket? Or can you please comment on how hot that pipe gets if the car idles for a little while?

You've been around a while and contributed quite a bit to the forum, just curious on what your thoughts are; not trying to demean your IC choice... There's a lot of great information here.

most manufactures have them this way. seems to not be an issue since majority of the industry manufacture them this way for the piping.
bmxhotsauce is offline   Reply With Quote
Old 01-23-2015, 12:05 PM   #10
bmxhotsauce
Scooby Specialist
 
Member#: 127099
Join Date: Sep 2006
Chapter/Region: BAIC
Vehicle:
02 IMPERZA WRX
BLACK

Default

bmxhotsauce is offline   Reply With Quote
Old 01-23-2015, 01:28 PM   #11
no694terry
Scooby Specialist
 
Member#: 220816
Join Date: Aug 2009
Location: Pittsburgh PA
Vehicle:
98 Forester S/t
all the mods!

Default

Quote:
Originally Posted by 1wrxtra View Post
Have you thought about getting new piping that runs counter-clockwise? The design of going clockwise and having the cold-side piping sit right above the turbo seems to significantly increase the amount of piping you need and reduces the benefit of having such a large cored IC. I imagine in stop and go traffic the pre-throttle body piping gets pretty hot...

It looks like you still have the heatshield, do you also have a turbo blanket? Or can you please comment on how hot that pipe gets if the car idles for a little while?

You've been around a while and contributed quite a bit to the forum, just curious on what your thoughts are; not trying to demean your IC choice... There's a lot of great information here.
mine are counter clockwise, logged 11*C (about the same as outside temp that day) intake temps at idle about 18" from throttle body. I could log some more if interested.
no694terry is offline   Reply With Quote
Old 01-24-2015, 12:42 PM   #12
point78
Scooby Specialist
 
Member#: 344329
Join Date: Jan 2013
Location: Summit County
Vehicle:
2008 Wrx, 6mt

Default

I switched my Perrin front mount back to a pw top mount.

The big intercooler blocked to much of the radiator, I'd overheat driving uphill in the mountains, even when it was near zero deg outside.

Summer, down in denver, I'd overheat just driving up the interstate towards golden. (Small incline)

I have a 2 row radiator too.
point78 is offline   Reply With Quote
Old 01-31-2015, 02:58 PM   #13
bmxhotsauce
Scooby Specialist
 
Member#: 127099
Join Date: Sep 2006
Chapter/Region: BAIC
Vehicle:
02 IMPERZA WRX
BLACK

Default

That's odd I have the same set up and in CA where summer is over 110 I never over heat even at auto x or road racing in summer. Sounds like air in the system or a leak

Sent from my SM-N910T using NASIOC mobile app
bmxhotsauce is offline   Reply With Quote
Old 01-31-2015, 07:28 PM   #14
Sp2Pilot
Scooby Newbie
 
Member#: 267212
Join Date: Dec 2010
Chapter/Region: RMIC
Location: SL,UT
Vehicle:
2015 FXT

Default

I really really like all of your DIY install articles, Overland04.
Good directions, with quality pics.
Hopefully all of your threads are still available (with pics) by the time I get the funds to do all this stuff. Great work.
Sp2Pilot is offline   Reply With Quote
Old 01-31-2015, 07:30 PM   #15
Overland04
Scooby Specialist
 
Member#: 293311
Join Date: Sep 2011
Chapter/Region: NESIC
Location: Coast of Maine
Vehicle:
2013 FXT 6-Speed
Obsidian Black Pearl

Default

Quote:
Originally Posted by Sp2Pilot View Post
I really really like all of your DIY install articles, Overland04.
Good directions, with quality pics.
Hopefully all of your threads are still available (with pics) by the time I get the funds to do all this stuff. Great work.
Thanks man!
I hope they stick around too, I've really enjoyed doing them.

Cheers,

- Jason
Overland04 is offline   Reply With Quote
Old 02-03-2015, 10:52 AM   #16
tomkun
Scooby Newbie
 
Member#: 244028
Join Date: Apr 2010
Chapter/Region: South East
Location: Valsota, GA
Vehicle:
2011 base WRX
SWP

Default

How do you like it compared to the tmic, can you even tell the throttle lag from switching?
tomkun is offline   Reply With Quote
Old 04-15-2015, 10:07 AM   #17
JMonkey
Scooby Newbie
 
Member#: 367137
Join Date: Sep 2013
Chapter/Region: NESIC
Location: Quincy, MA
Vehicle:
2014 WRX
Satin White Pearl

Default

Could you post a closer pic on how you adjusted the bracket that holds the cobb intake?

Thanks
-Jeff
JMonkey is offline   Reply With Quote
Old 09-10-2015, 12:08 PM   #18
Oceans05
Scooby Newbie
 
Member#: 263977
Join Date: Nov 2010
Chapter/Region: South East
Location: Ft Lauderdale, FL
Vehicle:
2011 WRX
WRB

Default

Quote:
Originally Posted by tomkun View Post
How do you like it compared to the tmic,?
what made you want to switch?

Trying to decide between the two, great write up!
Oceans05 is offline   Reply With Quote
Old 11-16-2015, 05:19 PM   #19
tfoles18
Scooby Newbie
 
Member#: 427752
Join Date: Aug 2015
Chapter/Region: NESIC
Location: tewksbury, ma
Vehicle:
2014 WRX hatch lmtd
SWP

Default

Did you replace the recirc hose with a bigger hose? My tuner recommended it for my front mount but I'm looking for other opinions. Thanks
tfoles18 is offline   Reply With Quote
Old 11-18-2015, 10:58 AM   #20
Overland04
Scooby Specialist
 
Member#: 293311
Join Date: Sep 2011
Chapter/Region: NESIC
Location: Coast of Maine
Vehicle:
2013 FXT 6-Speed
Obsidian Black Pearl

Default

Quote:
Originally Posted by tfoles18 View Post
Did you replace the recirc hose with a bigger hose? My tuner recommended it for my front mount but I'm looking for other opinions. Thanks

Nope, kept it all stock.

Intercooler is up for sale though. Car is being parted out.
Overland04 is offline   Reply With Quote
Old 11-18-2015, 07:27 PM   #21
krisk
Scooby Newbie
 
Member#: 333048
Join Date: Sep 2012
Chapter/Region: NWIC
Location: Seattle
Vehicle:
2013 WRX
VF52+E85+TP Road Tune

Default

Quote:
Originally Posted by Overland04 View Post
Car is being parted out.
Your fuel pump write up was very helpful!
This post would have helped as well, but I installed my FMIC before you

Hope all is good - is another Subie in your future?
krisk is offline   Reply With Quote
Old 12-09-2015, 07:35 PM   #22
garth5058
Scooby Newbie
 
Member#: 364419
Join Date: Aug 2013
Default

looks great!
garth5058 is offline   Reply With Quote
Old 05-08-2016, 01:12 AM   #23
UrdnotWrexSTi
Scooby Newbie
 
Member#: 411357
Join Date: Jan 2015
Location: Colorado
Vehicle:
2008 STi
Aspen White

Default

Great write up. Approximately how many inches did you cut from the bottom of the bumper to fit it with the bottom of the core?
UrdnotWrexSTi is offline   Reply With Quote
Old 05-08-2016, 08:21 AM   #24
Overland04
Scooby Specialist
 
Member#: 293311
Join Date: Sep 2011
Chapter/Region: NESIC
Location: Coast of Maine
Vehicle:
2013 FXT 6-Speed
Obsidian Black Pearl

Default

Quote:
Originally Posted by UrdnotWrexSTi View Post
Great write up. Approximately how many inches did you cut from the bottom of the bumper to fit it with the bottom of the core?
Thanks man!

This image shows the approximate cut. The max width at the end was roughly 1.75"

Overland04 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 09:21 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2017 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.