Which AFlow Catted Downpipe for B46 or B48 do I need?

Match the option to the engine code on your Supra 2.0. Active Autowerke builds the AFlow Catted Downpipe for B46 and B48 engines as two versions, each supplied with its own turbo gasket. A Toyota dealer can confirm the engine code from the VIN before you order, which avoids a return.

Does the Supra 2.0 need a tune after fitting it?

No. Active Autowerke sells the downpipe as a no-tune part and states that its AFlow converter will not set a catalyst efficiency code on factory software. A tune can make more of the 3.5 inch pipe, and the 300 to 500 horsepower converter rating leaves room for one.

Will it fit the 3.0 liter Supra?

No. This downpipe is built for the four-cylinder GR Supra 2.0 sold from 2021. The six-cylinder B58 Supra 3.0 uses a larger Active Autowerke downpipe, 4.5 inches at the turbo with a 4.5 inch converter, offered in AFlow and GESI versions.

How does the downpipe install?

It bolts on with no cutting or welding. A cast stainless V-band secures it at the turbo with the gasket already seated in the flange, and a stainless flex joint leads to the factory exhaust through its ball flare or slip-in connection. A lift makes the job much easier.

What is the converter made from?

The Active AFlow converter is 304 stainless throughout, including the 400 cell substrate, which is furnace brazed to the mantle. It is EPA registered and OBD2 compliant, withstands exhaust temperatures up to 1500F and reaches operating efficiency within 9 seconds of startup.

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Description

Active Autowerke AFlow Catted Downpipe for B46 / B48 Toyota GR Supra 2.0

Active Autowerke’s AFlow Catted Downpipe for B46 / B48 Toyota GR Supra 2.0 brings the company’s BMW four-cylinder downpipe to the Supra that arrived for 2021 with the same single turbo engine family BMW uses in the 330i. Its 3.5 inch 304 stainless pipe carries a 4 inch Active AFlow converter rated for 300 to 500 horsepower, and a stainless flex joint leads to the factory ball flare or slip-in connection, with the turbo gasket already seated in the flange. Both catalyst choices for this car share that rating, so the AFlow is the better value; the GESI Catted Downpipe for B46 / B48 suits owners who specifically want a GESI catalyst.

Features

Active AFlow high flow converter with a stainless substrate furnace brazed to the mantle
EPA registered and OBD2 compliant converter
Active Autowerke states it will not set a catalyst efficiency check engine light
Cast stainless upper V-band at the turbo
Turbo gasket pre-installed in the downpipe flange
No performance tune needed
TIG welded 304 stainless steel, made in Miami, Florida

Specifications

Piping diameter: 3.5 in
Wall thickness: 1.5mm
Converter diameter: 4 in
Catalyst cell density: 400 cpsi
Rated output: 300 to 500 hp
Heat tolerance: Up to 1500F
Light-off time: Within 9 seconds of startup

Applications

Toyota GR Supra 2.0: 2021-2024 | 2.0L B46 / B48

Notes

Select the B46 or B48 option of the AFlow Catted Downpipe for B46 / B48 to match the engine code on your Supra 2.0
The six-cylinder Supra takes the AFlow Catted Downpipe for A90 GR Supra 3.0
Warranty is 5 years or 50,000 miles on the shell and tube ends and 2 years or 25,000 miles on the catalytic core, to the original purchaser, and excessive burble beyond stock voids it

Frequently Asked Questions

Which AFlow Catted Downpipe for B46 or B48 do I need? Match the option to the engine code on your Supra 2.0. Active Autowerke builds the AFlow Catted Downpipe for B46 and B48 engines as two versions, each supplied with its own turbo gasket. A Toyota dealer can confirm the engine code from the VIN before you order, which avoids a return.
Does the Supra 2.0 need a tune after fitting it? No. Active Autowerke sells the downpipe as a no-tune part and states that its AFlow converter will not set a catalyst efficiency code on factory software. A tune can make more of the 3.5 inch pipe, and the 300 to 500 horsepower converter rating leaves room for one.
Will it fit the 3.0 liter Supra? No. This downpipe is built for the four-cylinder GR Supra 2.0 sold from 2021. The six-cylinder B58 Supra 3.0 uses a larger Active Autowerke downpipe, 4.5 inches at the turbo with a 4.5 inch converter, offered in AFlow and GESI versions.
How does the downpipe install? It bolts on with no cutting or welding. A cast stainless V-band secures it at the turbo with the gasket already seated in the flange, and a stainless flex joint leads to the factory exhaust through its ball flare or slip-in connection. A lift makes the job much easier.
What is the converter made from? The Active AFlow converter is 304 stainless throughout, including the 400 cell substrate, which is furnace brazed to the mantle. It is EPA registered and OBD2 compliant, withstands exhaust temperatures up to 1500F and reaches operating efficiency within 9 seconds of startup.

About Active Autowerke

Active Autowerke was founded in Miami, Florida in 1981 by brothers Mike and Karl Hugh as a BMW service shop, and turned to performance in late 1995 when Karl, a University of Miami engineering graduate, led its first M3 and 325i turbo kits. Supercharger kits for the E36, E46 and E9X followed, and its Signature Equal Length mid-pipe is protected by US Patent 11248511 and European and UK Patent 3882441.

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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Active Autowerke AFlow Catted Downpipe for B46 / B48 Toyota GR Supra 2.0

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Active Autowerke AFlow Catted Downpipe for B46 / B48 Toyota GR Supra 2.0

Features

Specifications

Applications

Notes

Frequently Asked Questions

About Active Autowerke

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