How is the ETS MaxFlow LW Header for GD different from the standard header?

The ETS MaxFlow LW Header for GD uses thinner .083 inch wall tubing, which saves weight and enlarges the inside diameter of each runner for a little more flow. Welds are back-purged. Fitment, runner sizes and flange options match the standard header.

Is the LW header suitable for a street car?

It will fit and work on a street car, but ETS built it for racers chasing every tenth. The standard header uses heavier wall tubing that is more forgiving of years of heat cycles, so it is usually the better choice for a daily driven STI.

What does back-purged welding mean?

Back purging floods the inside of the tube with inert gas while it is welded, so the inner side of the weld forms cleanly instead of oxidising. That gives a stronger, smoother joint, which matters more on thin-wall tubing like this.

Which up-pipe flange do I need?

Choose 2-bolt or 3-bolt to match your up-pipe, or V-band to suit the ETS rotated V-band turbo kit. The year range option must also match the car, from the 2004 GD STI through the 2021 VA STI. BA can confirm both.

Will it clear an oversized oil pan?

Yes. ETS states the LW header is compatible with XL oil pans including those from IAG and Killer B, and its low-profile design keeps clearance to the chassis and other components on every STI it fits. Ask BA about others.

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Description

ETS V2 MaxFlow LW Header for GD, GR / GV and VA Subaru WRX STI

ETS’s V2 MaxFlow LW Header for GD, GR / GV and VA Subaru WRX STI is the race version of the MaxFlow design, built from .083-inch wall USA-made tubing to cut weight and open up the internal diameter of each runner. The welds are back-purged for durability, and the 1 7/8-inch primaries still meet in a low-angle 4-into-1 collector before a 2.5-inch secondary. It is aimed at racers chasing every tenth; for a street car the standard-wall MaxFlow is the more forgiving choice.

Same Fit, Less Weight

The LW keeps the standard header’s direct-replacement fitment, low profile and clearance for IAG and Killer B oversized oil pans. Up-pipe flanges are offered in 2-bolt, 3-bolt or V-band for the ETS rotated V-band kit.

Features

.083-inch wall tubing for less weight
Larger internal runner diameter
Back-purged welds
Low-angle 4-into-1 merge collector
Clears IAG and Killer B oversized oil pans
Built in-house in the USA

Specifications

Primary runners: 1 7/8 in, CNC mandrel bent
Secondary: 2.5 in
Tubing wall: .083 in, USA made
Material: 304 stainless
Up-pipe flange: 2-bolt, 3-bolt or V-band

Applications

Subaru WRX STI: GD | 2004-2007 | 2.5L EJ257
Subaru WRX STI: GR / GV | 2008-2014 | 2.5L EJ257
Subaru WRX STI: VA | 2015-2021 | 2.5L EJ257

Notes

The standard-wall version is the ETS V2 MaxFlow Header
Choose the year range and up-pipe flange that match your car when ordering
This part cannot be shipped to California addresses

Frequently Asked Questions

How is the ETS MaxFlow LW Header for GD different from the standard header? The ETS MaxFlow LW Header for GD uses thinner .083 inch wall tubing, which saves weight and enlarges the inside diameter of each runner for a little more flow. Welds are back-purged. Fitment, runner sizes and flange options match the standard header.
Is the LW header suitable for a street car? It will fit and work on a street car, but ETS built it for racers chasing every tenth. The standard header uses heavier wall tubing that is more forgiving of years of heat cycles, so it is usually the better choice for a daily driven STI.
What does back-purged welding mean? Back purging floods the inside of the tube with inert gas while it is welded, so the inner side of the weld forms cleanly instead of oxidising. That gives a stronger, smoother joint, which matters more on thin-wall tubing like this.
Which up-pipe flange do I need? Choose 2-bolt or 3-bolt to match your up-pipe, or V-band to suit the ETS rotated V-band turbo kit. The year range option must also match the car, from the 2004 GD STI through the 2021 VA STI. BA can confirm both.
Will it clear an oversized oil pan? Yes. ETS states the LW header is compatible with XL oil pans including those from IAG and Killer B, and its low-profile design keeps clearance to the chassis and other components on every STI it fits. Ask BA about others.

About Extreme Turbo Systems

Extreme Turbo Systems designs and builds turbo kits, intercoolers, charge piping and exhaust systems at its facility in Ridgefield, Washington, and proves the hardware on its own drag cars. The ETS-G R35 GT-R set the GT-R drag record of 6.54 seconds in 2019 and held it for two years. The ETS Pro Mod GT-R, driven by owner JR Perrott, has run 5.94 seconds at 244 mph on twin Precision turbochargers, and the ETS C8 Corvette has run 8.64 seconds at 170 mph in the quarter mile and made 1,383 whp on the dyno with an ETS PT6870 turbo kit. ETS builds for the Subaru, Mitsubishi, Nissan GT-R, Toyota Supra, Ford, BMW, Corvette and Lamborghini platforms.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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ETS V2 MaxFlow LW Header for GD, GR / GV and VA Subaru WRX STI

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ETS V2 MaxFlow LW Header for GD, GR / GV and VA Subaru WRX STI

Same Fit, Less Weight

Features

Specifications

Applications

Notes

Frequently Asked Questions

About Extreme Turbo Systems

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