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As I have to buy parts and bits for this build, I'll add it's cost here. My goal is to keep the cost below, or as close to $1K as possible. I know, a lofty goal at best. But that's what I'm aiming for.

Engine Management Costs

I broke these bits out from the main build cost, because not everybody will need it.

Cost Date Description
$420.00 2009/2/11 Complete Greddy EManage Ultimate (Used) $420 shipped from EBay
$30.00 2009/2/26 Used GM 2-BAR MAP sensor and pigtail from EBay.
$140.00 2009/3/9 Brand new Innovate LC-1 Wideband kit with o2 sensor ($132 + shipping on EBay)
$590.00 on going Total

Current Build Cost

Cost Date Description
$275.00 2008/02/10 Used Mercedes C230 M62 Compressor from EBay ($247.50 + $27.50 shipping)
$40.00 2008/02/22 Used 2004 Forester XT TMIC from subaruforester.org ($40 shipped)
$30.00 2008/03/05 Used Forge Porsche/Audi BPV from EBay ($20 + $10 shipping)
$15.00 2008/03/24 Sold OEM FXT BPV to a local WRX owner (-$15)
$12.00 2008/10/25 Steel (3/16"x1.5"x4' angle) from Lowes (1/4"x2"x4' angle)
$12.00 2008/10/25 Some E6011 welding rods and Aluminum Brazing Rods from Harbor Freight
$8.00 2008/10/25 Steel (1/4"x1.5"x4' flat)
$10.00 2009/1/3 1/4"x12"x6" plate steel
$26.00 2009/1/3 Gates T41232 Idler Pulley from O'Reilly Auto Parts
$19.00 2009/1/3 Dayco 5050580/5PK1475 $19@PepBoys
$40.00   Various nuts, washers and bolts picked up through out fabrication process
$21.00 2009/1/19 3" Aluminum 45o Elbow from EBay ($10.50 + $8 shipping + tax)
$46.00 2009/1/19 Aluminum flat plate and tubing for intake from SpeedyMetals ($28 + Shipping + Tax)
- 2 x 3/8"x5"x12" flat aluminum
- 2x2"x12" Intake Tube
- 1x1"x12" Intake Tube
$63.00 2009/1/19 Silicon Elbows from siliconeintakes ($54.00 + shipping + Tax)
- 3"->2" 45o + 2" 45o + 1" 90o
$19.00 2009/1/25 Spectre Flexible 3" Intake Tube from PepBoys
$35.00 2009/1/26 Used Perrin Intercooler Y-Pipe from subaruforester.org ($35 shipped)
$20.00 2009/1/30 2 x 4oz bottles of GM Supercharger Oil from ZZPerformance on EBay ($6.99 ea + $6 shipping)
$35.00 2009/1/30 Handfull of hose-clamps, vacuum line clamps and a tube of Mobile-1 Synthetic Grease for the BPV. All from PepBoys.
$11.50 2009/2/10 NGK BKR7E-11 - One step colder plugs gapped to (.030) ($10 + tax)
$17.00 2009/2/10 1/8"-thick 3"x2"x18" piece of Aluminum Rectangular Tubing ($11 + $5 for the cut + tax)
$32.00 2009/3/2 K&N RB-0900 Universal Air Filter Amazon ($32 + free shipping)
$90 2009/5/09 Custom 2.75" Pulley made by Randall Allmand. ($90 shipped)
$60.00 2009/4/20 Spline Plate Coupler welded to piece of Stainless Steel.
$20.00 2010/07/2 Used Aluminum Crank Pulley from rs25.com
$140.00 2010/7/22 Reworked Aluminum Crank pulley to 7" OD by Randal
$40.00 2010/7/22 New Serpentine Belt (Napa/Gates 070622)1
$20.00 2010/7/12 Used Vortech Bypass Valve
$1065.00 on going Total

Things I bought and used that are not 100% necessary

Cost Date Description
$50.00 2008/04/10 Used SX Performance Adjustable FPR #15404 from RS25.com ($50 shipped)
$30.00 2008/05/01 Y-Block adapter and Weapon-R FPR adapter EBay ($30 + $10 shipping)
$20.00 2008/05/06 Used 2006 STi Fuel Pump form nasioc.com ($20 shipped)
$100.00 on going Total

Parts and Materials used for Throttle-Body Relocation

Cost Date Description
$20.00 2009/09/10 Used 1999 Throttle Body from RS25.com ($20 shipped)
$22.00 2009/12/17 15" of 1/4"x4" Aluminum Plate & 12" of 2"x3"x1/8" Box Aluminum
$40.00 2009/12/18 1" and 5/8" brass fittings, hoses, clamps, bolts, and misc bits from Lowes
$??.00 2009/12/18 Silicone 90deg reducing Elbow
$82.00 on going Total

Things I bought for the build that wont work or might not need

In other words, wasted money!! :(

Cost Date Description
$80.00 2008/05/05 Used MY99 intake Manifold ($50 + $30 shipping) - Doesn't look like I'll be using this though.
$150.00 2008/04/16 SmoothFlowPulleys.com custom adjustable pulley for C230 M62 SC ($150 shipped) - Unfortunatly, this pulley isn't quite up to snuff. I'm going to have it tweaked locally. It'll increase the cost a little.
$150.00 2009/4/18 The LAST tweak to the SC pulley. Had it re-welded and a few more bolts added.
$200.00 2009/2/16 Had to have the pulley hub remade by a local machine shop - I had to eat the cost of programming the CNC machine!! D'OH! There goes my $1000 goal!! Hopefully if anybody needs one of these made it'll cost much less now.
$580.00 on going Total