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Old 10-10-2008, 02:00 AM   #1
CosmoTheCat
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Green.

Default Teaser: Grimmspeed Downpipe

So I'm one of a select few people chosen to test and review Grimmspeed's new downpipe, and it showed up a bit ago.

This is the part where I would write up a review for it, but instead I get to write saying that I'm still putting the front end of my car back together after smacking a baby deer on the freeway, and I haven't had a chance to install and tune the car yet.

So I've got this gorgeous shiny cast bellmouth downpipe sitting in secured storage waiting for the perfect opportunity to put it to use.

I would post pics, but my camera is in the garage and I'm feeling lazy. I will be updating this thread though. Let me just say that the welds seem to be excellent, the casting is fairly clean, and the flanges are stout.

Will it bolt up? Will it make any power gains? Can I stick my entire arm inside of it? These are questions that will have to wait for another day!

FYI, if you don't know already, it's going into a 5at 2005 Legacy GT Limited wagon.

Stay tuned!
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Old 10-10-2008, 09:25 PM   #2
CosmoTheCat
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Old 10-10-2008, 09:30 PM   #3
All4bSpinnin
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problem Traction?

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nice!!!

put a gasket over the bellmouth and see if its ported... post pics of it too pls!
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Old 10-10-2008, 09:46 PM   #4
dcpatters
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Quote:
Originally Posted by HoratioCaine View Post
Will it bolt up? Will it make any power gains? Can I stick my entire arm inside of it? These are questions that will have to wait for another day!

FYI, if you don't know already, it's going into a 5at 2005 Legacy GT Limited wagon.

Stay tuned!
Tease!!
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Old 10-10-2008, 10:09 PM   #5
jheeno
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looks awesome
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Old 10-11-2008, 02:34 AM   #6
CosmoTheCat
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Quote:
Originally Posted by dcpatters View Post
Tease!!
Dude, it's sitting in MY garage... I can't wait to get it installed and tuned.

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Old 10-11-2008, 03:37 AM   #7
stealth84ct
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looks sweet. is the bellmouth section made out of a different material then the rest of the downpipe? Kinda looks similar to the cobb downpipe
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Old 10-11-2008, 12:00 PM   #8
jheeno
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Quote:
Originally Posted by stealth84ct View Post
looks sweet. is the bellmouth section made out of a different material then the rest of the downpipe? Kinda looks similar to the cobb downpipe
appears to be cast iron
avo and the new turboxs look like this too
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Old 10-13-2008, 03:22 PM   #9
AlxSti
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invidia v2/v3 dp has the cast bellmouth as well.. its retains heat a little better. helps our stock tmics out

grimmspeed dp looks nice.. not sure there needs to be a flex section in the dp though...
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Old 10-13-2008, 03:36 PM   #10
GrimmSpeed
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Quote:
Originally Posted by stealth84ct View Post
looks sweet. is the bellmouth section made out of a different material then the rest of the downpipe? Kinda looks similar to the cobb downpipe
Quote:
Originally Posted by jheeno View Post
appears to be cast iron
avo and the new turboxs look like this too

The bell mouth is constructed out of wax-casted 304 stainless steel. The wax-casting costs a bit more during the manafacture than the typical sand casting, but produces a much more smooth finish. The smoother finish helps keep velocity and flow smoother exiting the turbine housing.

The flex was installed to allow the engine to move without having to twist the entire exhaust system while doing so.

Rich
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Old 10-13-2008, 03:54 PM   #11
IIdiceII
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looks awesome...idea on price?
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Old 10-13-2008, 05:32 PM   #12
mxpunk
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cool. doubt it will net any real gains over any other bellmouth d/p
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Old 10-13-2008, 06:07 PM   #13
CosmoTheCat
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No idea on pricing, and I'm not sure what it'll do power-wise.

Anyone have dyno results from another LGT to compare it to?

My plan at the moment is to take it to WorldOne, unmarry my Accessport, get a baseline dyno, install the pipe, get another baseline dyno, then get it open source tuned.

I guess I could sell my AP now.
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Old 10-13-2008, 08:22 PM   #14
IIdiceII
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im sure it wont have much gains either but im sure it'll fit perfect, less likely to leak and the cast bellmouth is sweet.

my helix fits like ****, hks didnt have a bellmouth, cusco tapered, erz wasnt gasket matched...cobb is too expensive, aps is like 4 peices for the whole downpipe

they all have their flaws.
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Old 10-17-2008, 06:46 PM   #15
GrimmSpeed
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SWP

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We don't have pricing yet, but look for it around $350ish.... but don't quote me.

Rich
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Old 10-18-2008, 02:26 AM   #16
Benhart21
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Any chances of a catted one? Any guesses if it'll fit a Baja, and if you need another one tested, just in case
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