Jenvey Honda K20 EP3 Curved - SF50 ITB Kit

The Jenvey Honda K20 EP3 Curved - SF50 ITB Kit (CKHA11) replaces the standard induction with four tapered SF throttle bodies with 50mm butterflies on a short 7-degree inlet manifold, giving K20 EP3 owners a sharper, stronger engine for road or track.

Designed and manufactured by Jenvey Dynamics in the UK, Jenvey's individual throttle body systems are prized for crisp throttle response, strong torque and the unmistakable induction sound. An aftermarket ECU is required.

Key Features:

• Built & Balanced: Supplied assembled and balanced by Jenvey, ready to fit.
• Improved Fuel Mixing: Injectors sit further upstream, in the part-throttle turbulence of the butterfly, for better atomisation, torque and power.
• Maximum Flow: Profiled spindles minimise cross-sectional area at full throttle.
• Fine Low-Speed Control: A shallow 8° shut angle gives finer control at small throttle openings.
• Proven Durability: Major components are rig tested to over 1 million cycles.
• UK Made: Cast in Jenvey's own foundry and machined in the same UK factory; castings are lighter than fully CNC-machined parts.
• Modular System: Bespoke throttle sizes and system lengths can be built to order.
• Build It Your Way: Choose your throttle actuation and throttle position sensor above. The price updates as you choose.

Features

• Short inlet manifold with a 7-degree curve
• Tapered SF throttle bodies, 51mm tapering to a 50mm butterfly
• Tapered 90mm air horns

Technical Specifications:

What's In The Box?

• 1 x Short 7-degree inlet manifold
• 4 x SF tapered throttle bodies (51mm to 50mm, 50mm butterfly)
• 1 x Set of throttle levers
• 1 x Fuel rail
• 4 x Tapered 90mm air horns
• Plus any throttle actuation and throttle position sensor options you select above

Complete Your Kit:

These Jenvey parts are sold separately and can be added to your basket from the links below.

• TPS2 loom socket for TP1/TP8/TP11 sensors (£14.40)
• TPS3 DTM loom socket for the Contactless sensor (£21.60)
• 3.0 bar fuel pressure regulator (£110.40, fits the housing below)
• Remote regulator housing with -6 JIC fittings (£74.40)
• Idle control valve (£106.80, for ECU idle control on road cars)

FURTHER OPTIONS AVAILABLE ON REQUEST:

(Please contact us to add any of the following)

• Ti Automotive Fuel Pump (+£159.60 inc VAT)
• Filter kit: 90mm filter with 50mm carbon backplate (+£393.60 inc VAT)

Please note:

• This kit does not fit with the standard alternator or belt tensioner unit.
• Standard Honda injectors will not fit; Siemens 440cc short Minitimer injectors are recommended and available on request.
• A panel filter requires the ABF-KIT-MH11 50mm carbon backplate.

Frequently Asked Questions (FAQs):

Q: What does this kit fit?
A: Honda K20 EP3 engines, as originally fitted to the Civic Type R EP3, Integra, Accord and Acura models. Please contact us if you'd like us to confirm fitment for your engine.

Q: Do I need an aftermarket ECU?
A: Yes. Individual throttle bodies need an aftermarket ECU that is mapped to suit the kit.

Q: Which throttle actuation should I choose?
A: Most customers choose a cable linkage: single for one throttle cable, double for a twin-cable setup. The electronic actuator is for drive-by-wire systems with a suitable ECU.

Q: Which throttle position sensor should I choose?
A: The Colvern CP17 is the standard sensor. The Contactless L&R sensor has no wearing parts, so it's ideal for motorsport. Remember to add the matching loom socket.

Q: Are injectors and a fuel pump included?
A: No, unless listed in What's In The Box. Add them from the Complete Your Kit list above.

Q: Is this kit made to order?
A: Yes. Jenvey builds kits to order, so please allow time for manufacture. Please contact us for current lead times.

Q: Can I get a different bore size or specification?
A: Yes. Jenvey systems are modular and bespoke builds are possible. Please contact us and we'll confirm fitment and price.