The RB26 has six throttle bodies under one plenum. On a bigger build you can keep them under a new plenum, go to a single throttle, or fit a carbon manifold with drive-by-wire throttles.
The short answer
Keep six throttles for the factory layout, or go single for one throttle body. Artec's carbon manifold keeps six throttles with drive-by-wire.
Keep the six throttles: Plazmaman ITB plenum
Plazmaman's ITB plenum bolts on in place of the factory plenum and keeps the factory six-throttle system. Plazmaman says the factory fuel and water rails are reused.
Go single: Plazmaman single-throttle plenum
The six throttle internals are removed and the plenum bolts to the primary (lower) half of the factory manifold. Plazmaman builds it for one of its billet throttles or a Bosch Motorsport drive-by-wire unit, and the factory fuel rail stays because it sits on that half. Superforma makes adapters for a Bosch drive-by-wire throttle.
Plazmaman single-throttle plenum | Superforma drive-by-wire adapters
Six throttles with drive-by-wire: Artec carbon manifold
Artec's dry carbon RB26 manifold has long runners, a 90 mm inlet against the factory 80 mm, and a billet head flange with O-ring seals. Artec rates it to 40 psi. It's designed around the Dahtone Racing drive-by-wire throttle system, which we don't list, and Artec says an air temperature sensor must go in the intercooler pipe. We list it in four finishes.
3K gloss | 3K matte | Chopped carbon gloss | Chopped carbon matte
What else changes
- Throttle control: drive-by-wire needs an ECU your tuner can set up for it.
- Gaskets: Tomei makes an RB26DETT intake manifold gasket and a six-piece throttle gasket set.
- Pipework: check the intercooler pipe route.
Tomei intake manifold gasket | Tomei throttle gasket set
Ordering
Tell us your build by email or the contact form, and we'll confirm fitment before you pay. Plazmaman parts are made to order in Australia; ask us for the lead time.
Related guides
RB26 intercooler upgrade | Haltech vs Link ECU | RB26 injector upgrade
FAQ
What's the difference between an ITB plenum and a single-throttle plenum?
An ITB plenum replaces the factory plenum and keeps the six throttle bodies. A single-throttle plenum removes them and uses one throttle body at the plenum inlet.
Can I run drive-by-wire on an RB26?
Yes, with the right parts and an ECU your tuner can set up. Plazmaman's single-throttle plenum can take a Bosch Motorsport drive-by-wire unit, and Artec's carbon manifold uses Dahtone Racing drive-by-wire throttles.
Do I need new gaskets?
Fit new ones whenever the manifold or throttles come off. Tomei makes RB26DETT intake manifold and throttle gaskets.