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Old 02-05-2007, 04:44 PM   #1
Vendor Sales Rating: (212)
Member#: 136396
Join Date: Jan 2007
Chapter/Region: MWSOC
Location: Minneapolis, MN
2015 WRX, 2012 WRX,
2013 BRZ, 2006 STI

Default GrimmSpeed HiFlow Exhaust Manifold Crossover


Official List

Ok, here is the official list so far. Please check this post for any future updates to the list.

[5]B1A2NR (PAID)
[9]Chad W(PAID)
[13]teamslow wrx(PAID)
[15]PA04STI (PAID)
[17]Magnum626 (PAID)
[18]DoubleDiamond (PAID)

[1 - backup]Crystal_Imprezav
[2 - backup]PIGGY
[3 - backup]wiznaz
[4 - backup]shift_rex(PAID)
[5 - backup]subieracer18
[6 - backup]methinkadoo
[7 - backup]CSlater21
[8 - backup]UM-WRXer
[9 - backup]qoncept
[10 - backup]StarDogChampion
[11 - backup]jdmbugI
[12 - backup]kjott21
[13 - backup]fullerton

Please paypal to [email protected] and put in the notes, your nasioc screen name and "nasioc crossover group buy". Since we are now at the cheapest price tier your total will be 109.99 shipped to lower US 48.

Due to customer demand we have decided to start our first Nasioc group buy!!

Get rid of that teeny weeny stock exhaust crossover and replace it with our new HiFlow Crossover. Inner diameter is a beastly 45mm compared to the 38mm stocker. This unit is built from mild steel tubing throughout and maximizes exhaust flow from cylinders 1 and 4 to the passenger side manifold collector for faster turbo response. A big problem we face as boxer engine owners is spool up time... one of the reasons being the driverside cylinders are sooo far away from the turbo. Add in a tiny stock xover pipe and it makes it even worse. If you want to stay with the stock setup, one of your only options is to increase the diamater of the crossover pipe allowing the exhaust from those two far away cylinders to get to the turbo sooner. Our enlarged crossover does this for you.

For a kicker....all of these pieces come standard with ceramic coating to keep that exhaust flowing and the heat confined in the pipe.

Pricing Tiers are as follows:

1-9 participants: $114.99
10-15 participants: $109.99
15+ participants: $99.99 <-- oh the insanity!

Want to add double heat protection? As an option we can heat wrap your piece for $45.

Shipping is a flat rate of $10 to the lower 48.

Fits 02-05 Turbo OEM Manifolds

Group buy ends on February 26th (duration of 3 weeks)


Thanks to everyone for your continued support!!

Justin Grimm

Product Pics:

Last edited by GrimmSpeed; 03-02-2007 at 02:21 PM.
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