IAG - Subaru 02-14 WRX/04-21 STI/04-08 FXT/05-09 LGT - Equal Length Header & 38mm External Waste gate Uppipe

IAG Performance
SKU: IAG-EXT-1060

Quick Overview

IAG's 38mm External Wastegate Header & Uppipe Kit is designed to eliminate the OE internal wastegate, uppipe, and exhaust manifold, allowing for quick turbo spool up and precise boost control. By utilizing this header package peak boost is achieved earlier providing a wider power band and the elimination of boost...
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IAG's 38mm External Wastegate Header & Uppipe Kit is designed to eliminate the OE internal wastegate, uppipe, and exhaust manifold, allowing for quick turbo spool up and precise boost control. By utilizing this header package peak boost is achieved earlier providing a wider power band and the elimination of boost creep. Additionally, the 4-2-1 equal-length tubing design increases performance on the top end over unequal-length designs.

The IAG Performance EWG kit is manufactured from our 3-Bolt Equal Length 304 stainless-steel header and uppipe. Each Uppipe is modified to add V-Band flanges to accept a TiAL / Turbosmart 38mm External Wastegate (Sold Separately). The uppipe features additional bracing to support the weight of the wastegate and prevent cracking. The kit includes a stainless steel dump tube that fits with many popular downpipes.



Kit includes:

  • (x1) Custom TIG welded 304 Stainless Steel Uppipe w/ 38mm V-Band stainless steel flanges
  • (x1) 16 Gauge Stainless Steel Dump Tube
  • (x1) IAG Performance Equal Length Header - Removes the "Boxer" Rumble
  • (x1) Adjustable Wastegate Locking Bracket (Holds OE wastegate shut)
  • (x5) Uppipe studs
  • (x6) Copper Nuts
  • (x1) Multi-layer 3-Bolt Manifold to Uppipe Gasket
  • (x1) Multi-layer Uppipe to Turbo Gasket
  • (x1) Turbo to Downpipe gasket
  • (x2) Manifold to Cylinder-head Gaskets
  • (x3) Zinc Plated Uppipe to Manifold Bolts, Nuts
  • (x1) EGT Plug

 

NOTES: 

  • TiAL / Turbosmart 38mm V-Band Wastegate Required / NOT INCLUDED
  • Will not fit with Nameless Downpipe
  • May not fit with "Fully Divorced" downpipes.
  • Works with COBB and Invidia Downpipes
  • Due to the equal length header design, these headers will alter the exhaust tone from the distinct "boxer rumble" to a smoother exhaust note.
  • 2002-05 WRX Requires 2.5L STI Oil Pan
  • 2006-07 WRX Requires STI Oil Cooler and STI Oil Pan

 

Which wastegate is right for my car?
- It is always best to check with your tuner for their preference before ordering but generally, the industry follows these guidelines:

  • Big Turbo/Low Boost = 44mm Wastegate
  • Big Turbo/High Boost = 38mm Wastegate
  • Small Turbo/High Boost = 38mm Wastegate
  • Small Turbo/Low Boost = 44mm Wastegate

 

FITMENT:

  • Subaru 05-09 Legacy GT
  • Subaru 04-08 Forester XT
  • Subaru 02-14 WRX
  • Subaru 04-21 STI
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