Why Choose the DNA Motoring TM-B-S-38?

Because your B-series deserves better than cast iron from 1993 — and cheap manifolds that crack the second you hit boost.

This manifold gives you:

• Stainless steel durability

• High-flow turbo runners

• 38mm wastegate port for clean boost control

• T3/T4 turbo compatibility

• Smooth, even exhaust pulses for fast spool

• A proper B-series fit (no weird angles, no hitting the firewall)

You’re building boost — this is the right foundation.

The heart of any Turbo system is the Manifold and the Turbocharger. These form the basis where the rest of the turbo system is built around. Turbo manifolds have only one, but the most critical purpose in turbo systems, and that purpose is to expel exhaust gas into the turbine of a turbocharger as efficiently as possible.

Key Features

🔥 Stainless Steel Construction

Heat-resistant, warp-resistant, and designed for repeated high-boost cycles.

🔥 T3/T4 Turbo Flange

Supports popular turbos:

• Garrett

• Precision

• BorgWarner

• VS Racing

• On3

• eBay “fun bombs” (no judgment)

There is no match for power and performance for tubular stainless steel manifolds. Tubular manifolds are made up of runners coming from each cylinder, meeting up at a collector. Tubular manifolds yield a higher efficiency rate, as each runner is generally the same circumference.

🔥 38mm External Wastegate Port

Compatible with:

• Tial 38mm

• Turbosmart 38mm

• VS Racing 38mm

• Most generic 38mm gates

Stable boost = happy engine.

🔥 High-Flow Mandrel Runners

Better spool, better response, better power — everywhere.

🔥 Bolt-On Fit for B-Series Heads

No grinding, no hammering, no praying required.

This tubular manifold furthers the even exhaust flow using “equal length” runners. Equal length tubular manifolds are the most efficient design, which ensures equivalent air flow rate smoothly from each cylinder.

Vehicle-Specific Fitment

This turbo manifold fits all Honda/Acura models running a B-series DOHC engine:

Honda Civic

• Civic EG (1992–1995)

• Civic EK (1996–2000)

• Civic EF (1990–1991) with B-swap

Acura Integra

• Integra DA/DB (1990–1993)

• Integra DC2/DC4 (1994–2001)

Engine Compatibility

• B16A / B16A2 / B16B

• B17A1

• B18B1 (LS)

• B18C1 (GSR)

• B18C5 (Type R)

If it’s a DOHC B-series, this manifold bolts up beautifully.

This allows for a much smoother flow of exhaust gas to the turbo. Tubular stainless steel manifolds are chosen over cast manifolds for big power applications. Tubular stainless manifolds feature better and more consistent flow of exhaust gases.

Perfect For Build Types

• Street turbo Civics

• Integra boost builds

• LS-VTEC turbo monsters

• Drag/hill climb setups

• Budget DIY turbo projects

• Sleeper Hondas that embarrass Mustangs

Most of the tubular Stainless manifolds also feature the placement of the waste gate flange towards the middle of the collector to allow accurate readings and precise control. Replace for 90-01 Acura Integra 99-00 Honda Civic Si 94-97 Honda Del Sol VTEC 88-91 Honda Prelude 97-01 Honda CR-V Fit ALL Models Above with B-Series DOHC l4 Engines ONLY

What You’ll Notice After Installing

• Faster turbo spool

• Stronger midrange grunt

• Real top-end pull

• VTEC + BOOST = happiness

• Lots more smiles per gallon

• Possibly lots more broken traction

This is how you turn a B-series from “fun” to “chaotic fun.”

Made of High Quality T-304 Polished Stainless Steel Alloy Material for Strength and Durability
Tubular Design with Equal Runners to Ensure Equivalent Exhaust Flow Rate from each Cylinder
TIG Welded CNC Machined Flange for Resistance against Cracking and Wearing
Increase Engine Exhaust Output and Efficiency
38mm/ 35mm External Waste gate Port and Flange Included; Standard T3/ T4 Configuration Outlet