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-   -   Perrin TMIC Install walkthrough with pics (

westy66 09-30-2008 04:39 PM

Perrin TMIC Install walkthrough with pics
i just finished my install a couple hours ago. after reading all the horrors prior to the install i wanted to post my impressions and method.

-Remove 4 pop-screws from engine cover

-Throw cover aside

-Remove two bolts on turbo side

-LOOSEN two front bolts on green TMIC support bracket on manifold
-Remove one back support bracket bolt from TMIC
-Nudge support bracket out of the way and remove two recirc valve bolts
-Loosen large clamp on throttle body

-nudge the recirc valve and green bracket out of the way and wiggle the stock TMIC out

-WOW :eek: either the stock TMIC is small or the Perrin is BIG

-heres where you might want to put zip ties on the "Blue T" hoses to prevent possible blow off.

-coat your finger with a little assembly lube, oil, whatever and lube up the inside surface of the throttle body hose (large black one)

-install the provided o-ring into your new TMIC on the turbo side. shove the Perrin all the way into the throttle body hose and SLIGHTLY snug up the hose clamp.

-reinstall the recirc valve with its two bolts.

-so now the only two things connected to the new TMIC are flexible (this is important)

-wiggle the TMIC until you can get the turbo side bolts lined up and start them. BE CAREFUL, your threading into alluminum!! tighten about half way.

-hand tighten the back bolt on the green bracket to TMIC.

-start on the turbo side and tighten those two bolts about 2/3rds. tighten the green bracket bolts a little. alternate side to side now. you might have to push the TMIC over from the passenger side to get it to sit on the turbo. this is the side you want to mate first.

Youre done! only took you 30-45 minutes!

autotech 10-18-2008 08:23 PM

do you need supporting mods or a tune for a top mount. i have a chance to pick one up (perrin) for 350 or so. but i dont have a tune or a downpipe or anything like that.

VTGT 10-19-2008 01:02 AM

Damn where are you picking up a Perrin TMIC for 350. I am jealous

LGT-NY 10-19-2008 01:18 AM

You'd need a tune.

Originally Posted by autotech (Post 2114396)
do you need supporting mods or a tune for a top mount. i have a chance to pick one up (perrin) for 350 or so. but i dont have a tune or a downpipe or anything like that.

LGT-NY 10-19-2008 01:19 AM

Nice walkthrough westy. :) Here's mine:

LGT-NY 10-19-2008 01:21 AM

I also found it helps if you removed the plastic hose bracket between the manifold and the TMIC, it gives you a little more space to work with and allows you to align the IC more squarley.

SBT 10-19-2008 01:27 AM

Thanks Westy - Nicely done!

So the engine cover will not fit with the Perrin TMIC installed? I'd heard/seen this on the earlier versions (3-4 years ago), but haven't been watching recent improvements.

LGT-NY 10-19-2008 01:29 AM

You would have to trim the engine cover quite a bit to get it to fit. It's been done.

SBT 10-19-2008 01:37 AM


Originally Posted by LGT-NY (Post 2114606)
You would have to trim the engine cover quite a bit to get it to fit. It's been done.

Any issues with hood scoop sealing or consistent airflow across the whole surface of that monster?

fishbone 10-20-2008 09:34 AM

If you don't put the engine cover on, there is about a 2-finger gap all around, depending on wether you have lady fingers or chubby fingers. Eitherway, I'd say the air isn't forced in the TMIC with the lack of an engine cover but I can't say my boost or intake temps have been adversely affected noticeably. There's a debate wether or not to put the engine cover back on, some do, some don't. I haven't modded mine yet but I plan on putting it back on.

TSi+WRX 10-22-2008 11:36 AM

Dangit, westy, that's so cool! :) I'm jealous!

westy66 10-28-2008 02:26 PM

UPDATE: the Perrin was rubbing sporadically on my clutch cylinder :mad: clearance to the cap is about 1/8" - 3/16" - but i can still get the cap off.

i remounted the TMIC ABOVE the green support bracket on the Left side. no more rubbing. the clearance didnt change, but since mounting the IC over the bracket the twisting motion of the engine under load doesnt push it into the cylinder :confused: NICE!!

i can get my hand into the scoop and can feel about an inch gap between the TMIC and the boot on the underside of the hood.

i cant see how this could possibly effect cooling at any speeds over 20 mph as the boot is so focused on the intercooler. the only downside i can think of is now rain, snow, salt, crap can more easilly blow over the back of the IC.

ripsweetness 11-02-2008 02:25 PM

Perrin is now selling there TMIC for $499. Im thinking of buying one and simply keeping it in the box incase my stock ic goes.

TPLGT 11-02-2008 02:32 PM

Without the engine cover properly installed, you will lose major WHP. Also, dpn't fprget not to get soap in the intercooler when washing.

SBT 11-02-2008 05:17 PM

oh noes - not the dreaded soap issue...:lol:

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