Future Fab Toyota 1JZGTE VVTi T4 Twin scroll Exhaust Manifold

The Future Fabrication 1JZGTE VVTi T4 twin scroll exhaust manifold is built for 1JZ swaps into the Nissan 240SX and other chassis where a true twin scroll turbo setup is the goal. Made in the USA from thick walled stainless, it is a built to order piece intended for serious turbo builds rather than a budget replacement for a cast log.

Construction

• 1 1/4 inch schedule 40 stainless steel runners
• Fully TIG welded and back purged
• True twin scroll T4 turbine flange
• Twin scroll merge collector
• All flanges and all piping sourced in the USA

Options

• Dual 38mm MV-S or dual 44mm MV-R wastegate flanges
• Silver or black ceramic coating

Why twin scroll

The merge collector creates a turbulence free area so exhaust gases enter the turbine housing in even pulses at high velocity with low pressure drop. Future Fab cites a 7 to 8 percent increase in turbine efficiency from this layout, which shows up as faster spool and quicker response, with fuel efficiency improvements as high as 5 percent.

Fitment

Toyota 1JZGTE VVTi, for 1JZ swaps into the Nissan 240SX. T4 twin scroll turbine flange.

Warranty and lead time

Includes a lifetime warranty to the original buyer. Manifolds are built to order in Arizona; allow 3 to 4 weeks lead time. Confirm your wastegate flange and coating selection when ordering.