Skunk2 Ultra Race 3.5L Side Feed Intake Manifold for Honda F20C and F22C (S2000) Engines

The Skunk2 Ultra Race intake manifold is made for race engines: a 3.5 litre plenum, short tapered runners and a 90 mm throttle body flange. It favours peak power at high rpm, on Honda F20C and F22C (S2000) engines.

Specifications

Which cars it fits

• 2000-2009 Honda S2000 with F20C or F22C engines

What to check

• Skunk2 lists it for racing only, not for road use.
• Pick the plenum by power: 3.5 litres up to 600 hp, 4.5 litres for 600-1000 hp, 5.5 litres above 1000 hp. 1 and 2 litre spacers are sold separately.
• It has provisions for a second set of injectors underneath.
• The Ultra fuel rail is included; it needs a plumbing kit and a fuel pressure regulator, sold separately.
• It needs AP2 injectors or any injector 48 mm between O-rings, with 14 mm upper and lower O-rings; AP1 injectors do not fit.
• There is no idle air control: it needs the Skunk2 90 mm throttle body or an adapter, and idle is set on the idle screw.
• A throttle cable bracket has to be fabricated for the stock cable.
• Skunk2 recommends it for naturally aspirated engines up to 450 hp and turbo or supercharged engines from 650 hp up.