Turbo Kit for Honda Prelude H22 (1993-2001) 2.2L

For Honda Prelude with the 2.2L H22 DOHC VTEC engine. In the US, the H22 came in the 1993–1996 Prelude VTEC (H22A1) and the 1997–2001 Prelude base and Type SH (H22A4). This kit uses a cast H22 turbo manifold, so the engine must be an H22. It is not for the 1992–1996 Prelude S (F22) or Si (H23 non-VTEC).

This is a complete T3/T4 hybrid "Street Demon" stage 3 turbo package. It includes a cast H22 turbo manifold, a hybrid turbocharger, a front-mount intercooler with 2.5" piping, a wastegate, a blow-off valve, the full turbo oiling kit, a fuel pressure regulator and filter, a catch can, and a battery relocation kit. It covers most of the parts you need to put an H22 Prelude on boost.

On a healthy stock H22, the supplier rates the kit at about a ~100 hp gain at 8 PSI. The "495 hp at 25+ PSI" figure is the supplier's hardware ceiling. Reaching it takes a built engine, upgraded fuel, and a proper tune, so it is not a promised dyno result. The kit works with automatic or manual gearboxes, and A/C and power steering can be kept on nearly all setups.

Why this Prelude H22 turbo kit

• Cast H22 turbo manifold with a thick T3 flange and large primaries
• T3/T4 hybrid turbo (.50 A/R compressor / .63 A/R turbine, .57 trim)
• Aluminum front-mount intercooler and 2.5" aluminum piping kit with silicone couplers
• Wastegate kit, blow-off valve kit, and manual boost controller
• Full oil feed/return kit, catch can, adjustable FPR with gauge, and -6AN billet fuel filter
• Battery relocation kit to free up engine-bay room, plus an electronic turbo timer

Package Includes

• 1 × T3/T4 hybrid turbocharger (.50 A/R compressor housing, .63 A/R turbine housing, .57 compressor wheel trim; 3" inlet / 2" outlet; 1/8 NPT oil inlet; wet-float bearings, balanced; oil fitting gaskets and mounting studs)
• 1 × Cast turbo manifold (cast steel, large primaries, extra-thick flanges)
• 1 × Front-mount intercooler (lightweight aluminum, TIG welded)
• 1 × Aluminum intercooler piping kit: 2 × 90° 2.5" bends, 2 × 60° 2.5" bends, 2 × 45° 2.5" bends, 2 × straight 2.5" pipes, 2 × 2.5" 90° silicone couplers, 6 × 2.5" straight silicone couplers, 16 × stainless worm-gear clamps (light modification may be needed)
• 1 × Manual boost controller kit (CNC machined, anodized aluminum, complete install kit)
• 1 × Turbo oiling kit (straight high-strength oil feed line, high-temperature 550 psi oil return line, oil feed fittings, turbo oil drain, gaskets and hardware)
• 1 × Battery relocation kit (aluminum box, relocation cables, straps, hardware)
• 1 × Slimline reversible cooling fan
• 1 × Electronic turbo timer (LED display, auto mode, pigtail wiring)
• 1 × Fuel pressure regulator and filter kit (adjustable FPR, precision gauge, -6AN billet aluminum inline filter, install kit)
• 1 × Wastegate kit (supplier describes it as bolting to the included turbo with a v-band style flange and clamp; base pressure starts at 8 psi)
• 1 × Oil catch can (polished, complete install kit)
• 1 × Blow-off valve kit (flanges installed at your discretion, complete install kit)
• 1 × Coolant sensor bung (38 mm, aluminum, anodized blue)
• 1 × Heat wrap (1" wide, 50 ft roll)
• 1 × Cone air filter (high-flow, washable)

Turbocharger & manifold specs

• Turbo: T3/T4 hybrid · Compressor A/R .50 · Turbine A/R .63 · Trim .57
• Inlet / outlet: 3" / 2" · Oil feed: 1/8 NPT · Wet-float bearings
• Manifold: cast steel, T3 turbo flange, built for the H22 head

Exact Fitment: Honda Prelude H22

• 1993–1996 Honda Prelude VTEC (BB1, 4th gen): 2.2L H22A1
• 1997–2001 Honda Prelude base / Type SH (BB6, 5th gen): 2.2L H22A4

The manifold only fits the H22 head. It does not fit the F22 (Prelude S) or the H23 (Prelude Si non-VTEC). Before ordering, check your engine code and your radiator, core-support, and bumper clearance for the intercooler. The 2.5" piping is a universal kit and may need trimming to fit cleanly in a Prelude.

Not included (plan these separately)

• Downpipe from the turbo to your exhaust (Prelude-specific or custom)
• Larger injectors, a higher-flow fuel pump, and fuel lines beyond the included FPR and filter
• ECU / engine management and a professional tune
• Clutch and transmission upgrades for boost
• Oil-pan drain bung or custom oil-return fabrication
• Exhaust beyond the turbo outlet

Installation notes

• Professional installation is recommended. A tune (fuel, ignition, boost) is required; this is not a "bolt on and drive" kit.
• Expect fabrication work for intercooler pipe routing, BOV flange placement, the wastegate, the downpipe, and the gravity oil return.
• The manifold is a cast street log, not an equal-length tubular race manifold. That makes it strong and affordable, but it spools and makes power differently from a tubular manifold.
• Use the turbo timer, or let the engine idle to cool down, to keep oil from coking in the turbo.
• H22 rods, pistons, and the stock fuel system limit how much boost is safe. Plan injectors, the pump, the clutch, and any engine build around your power target.

FAQs

Will this fit my Honda Prelude?
Yes, if it has an H22: the 1993–1996 Prelude VTEC (H22A1) or the 1997–2001 base or Type SH (H22A4). It will not fit the F22 Prelude S or the H23 Prelude Si.

How much horsepower will it make?
Expect about 100 hp over stock at roughly 8 PSI on a healthy stock H22, with a proper tune. The 495 hp figure is the hardware's ceiling with a built engine and upgraded fuel, not a guaranteed result.

Is a downpipe included?
No. You will need a Prelude-specific or custom downpipe from the turbo to your exhaust.

Do I need a tune?
Yes. Boost requires engine management and a tune for fuel and ignition. Running this kit untuned risks engine damage.

Does it work with automatic and manual Preludes?
Yes, the supplier says it works with both. Plan clutch and transmission limits under boost.