Parts graph
F20C
The F20C is the 11.0:1, 9,000rpm NA benchmark four: bolt-ons (header, catback, standalone tune) top out at an honest 235-240whp, so the real power path is forced induction — supercharger kits around 330whp or turbo kits at 380-450whp, gated by injectors, fuel pump, standalone engine management, and past ~8psi on pump gas, a lowered-compression built block. Chassis-side, the AP1 rewards a bushing refresh and rear toe-in before premium dampers, with 17x9/17x10.5 staggered track fitments, big brakes, and serious water/oil cooling rounding out a track build; parts fit both AP1 and AP2 unless noted.
Compatibility intel 18 edges
The rules that make combinations work — or not. This is the knowledge that used to live in dead forum threads.
- Inline Pro S2000 Turbo KitrequiresElite 1500 with S2000 Plug'n'Play AdapterThe stock ECU has no boost or fuel-scaling provision; a speed-density standalone must go in before the first boosted mile.
- Inline Pro S2000 Turbo KitrequiresID1050-X Injector SetStock ~290cc injectors run out of duty cycle around 250whp; 1000cc-class hardware covers 450whp with E85 headroom.
- Inline Pro S2000 Turbo KitrequiresDW300c 340lph In-Tank Fuel PumpOEM pump volume collapses past ~300whp and base pressure sags under boost; the 340lph drop-in fixes both.
- Inline Pro S2000 Turbo KitrequiresACT HD Pressure Plate & Performance Disc KitThe stock clutch was rated for 153lb-ft NA; it glazes within weeks behind a turbo — do it while the driveline is already apart.
- Inline Pro S2000 Turbo KitrecommendsFull-Race Front Mount Intercooler UpgradeCharge temperature, not airflow, is what pushes an 11.0:1 boosted F20C into knock; the larger bar-and-plate core is cheap detonation insurance.
- Inline Pro S2000 Turbo KitconflictsF20CAbove ~8psi on 93 octane the stock 11.0:1 pistons detonate — big boost on an unopened F20C is a pump-gas conflict, not a tuning problem.
- Built Shortblock Package (9.0:1 CP Pistons, H-Beam Rods)unlocksInline Pro S2000 Turbo KitWith 9.0:1 forged pistons the same kit turns up from ~8psi/380whp to 15+psi, making 450whp a durability question instead of a gamble.
- Built Shortblock Package (9.0:1 CP Pistons, H-Beam Rods)recommendsSupertech Dual Valve Spring & Titanium Retainer KitThe rebuild is the moment: fresh springs and Ti retainers preserve 9,000rpm float margin once boost raises cylinder pressure.
- HKS GT2 Supercharger Pro KitrequiresSeries 2 EMS 30-6052 Plug & PlayThe blower's ~330whp is only safe with full standalone fuel and timing authority on the 11.0:1 motor — the classic AEM-managed S/C combo.
- HKS GT2 Supercharger Pro KitrequiresID1050-X Injector SetEven at ~6psi the stock injectors are past safe duty cycle by 300whp; upsized injectors are part of every serious S/C install.
- HKS GT2 Supercharger Pro KitrecommendsDW300c 340lph In-Tank Fuel PumpA supercharger's constant load exposes a tired 20-year-old fuel pump faster than NA driving ever did.
- HKS GT2 Supercharger Pro KitrecommendsKoyorad Hyper V-Core Aluminum RadiatorA Roots blower dumps heat into an engine bay the marginal single-core AP1 radiator already struggles to cool on track.
- HKS GT2 Supercharger Pro KitconflictsInline Pro S2000 Turbo KitPick one power adder — the kits occupy the same plumbing and the same fuel-system headroom.
- Toda Racing 4-2-1 Exhaust ManifoldunlocksF20CThe F20C earns its keep from 6,000-9,000rpm; a proper 4-2-1 header adds 10-12whp exactly where VTEC lives.
- Toda Racing 4-2-1 Exhaust ManifoldrecommendsBerk Technology 70mm Catback ExhaustHeader gains only fully show with a free-flowing catback behind the collector; the stock exhaust chokes them.
- Toda Racing 4-2-1 Exhaust ManifoldrecommendsSeries 2 EMS 30-6052 Plug & PlayBolt-ons strand power on the stock map — a proper NA tune on the PnP standalone is what gets an AP1 to an honest 235-240whp.
- Ohlins Road & Track DFV CoiloversrecommendsHardrace Complete Hardened Bushing KitPremium dampers on 20-year-old collapsed bushings chase their own tail; refresh compliance before paying for alignment.
- Koyorad Hyper V-Core Aluminum RadiatorrecommendsSetrab Thermostatic Oil Cooler KitOn the F20C, sustained track laps push oil temps past water temps — treat water and oil cooling as a pair.
Manufacturer application charts 6 records
Fitment straight from the manufacturers’ current application pages — chart-level ground truth for this platform.
- S14S15BNR32BCNR33BNR34AP1
Extracted only requested-engine applications from the current Hipermax S list.
- AP1
Product database application lists AP1/F20C.
- AP1AP2
Application page lists AP1 and AP2.
- DC2DB8EK9AP1AP2FD3SSE3P
Requested-engine chassis extracted from the current July 2026 LSD application chart; the chart is chassis/drivetrain based and does not assert engine fitment.
- S15AP1FD3SCN9ACP9A
Requested chassis extracted from the official application PDF; engine codes are not asserted in that chart.
- AP1AP2
Application list includes AP1-100 through AP1-200 and AP2-100/-110.
Turbo & power
HKS GT2 Supercharger Pro Kit
HKS
Roots-type blower at ~6psi on the stock 11.0:1 motor for a linear ~330whp that preserves NA throttle feel; same kit covers the AP2 F22C.
Inline Pro S2000 Turbo Kit
Inline Pro
The classic S2000 turbo path: ~380whp at conservative boost on a careful stock motor, 450+ once the block is built and compression drops.
Engine internals
Built Shortblock Package (9.0:1 CP Pistons, H-Beam Rods)
CP-Carrillo
Machined and assembled shortblock that drops static compression from 11.0:1 to 9.0:1 — the ticket to real boost on pump gas.
Supertech Dual Valve Spring & Titanium Retainer Kit
Supertech
Guards against float at sustained 9k; F-series screw-and-locknut lash still wants checking every 30k miles — S2000 valve-adjustment culture is maintenance, not folklore.
Injectors
ID1050-X Injector Set
Injector Dynamics
Drop-in 1065cc set, E85-compatible, with published dead-time data every S2000 tuner already has loaded.
Fuel system
DW300c 340lph In-Tank Fuel Pump
DeatschWerks
Direct-fit 340lph drop-in; the 20-plus-year-old OEM pump is a silent lean-out risk even on NA cars.
Engine management
Elite 1500 with S2000 Plug'n'Play Adapter
Haltech
Full speed-density standalone with boost control, flex fuel, and knock strategy; the modern default for FI S2000 builds.
Series 2 EMS 30-6052 Plug & Play
AEM
The long-time S2000 PnP standard; discontinued but still the tuner-shop lingua franca with proven base maps for every classic FI combo.
Intercooler
Full-Race Front Mount Intercooler Upgrade
Full-Race
Bar-and-plate core sized for 500whp; charge temperature is the entire margin of safety on an 11.0:1 boosted motor.
Cooling
Koyorad Hyper V-Core Aluminum Radiator
Koyorad
36mm all-aluminum core; the factory radiator is marginal for track duty and two decades old besides.
Setrab Thermostatic Oil Cooler Kit
Setrab
Sandwich-plate thermostatic kit; F20C oil temps outrun water temps in sustained track use at 9,000rpm.
Exhaust
Toda Racing 4-2-1 Exhaust Manifold
Toda Racing
Stainless 4-2-1 tuned for the 6,000-9,000rpm band; the single best NA bolt-on an F20C can wear.
Berk Technology 70mm Catback Exhaust
Berk Technology
Free-flowing single-exit 70mm system without the highway drone that plagues cheaper S2000 exhausts.
Clutch
ACT HD Pressure Plate & Performance Disc Kit
ACT
Holds ~400whp with a streetable pedal; pair with a lighter flywheel to keep the F20C's rev-happy character.
Drivetrain
OS Giken Super Lock 1.5-Way LSD
OS Giken
The stock Torsen is good until inside-wheel lift or drift use unloads it; the clutch-type keeps drive under kerb-hopping and big power.
Suspension
Ohlins Road & Track DFV Coilovers
Ohlins
The benchmark dual-duty S2000 damper: compliant on street, composed at nine-tenths on track.
Tein Flex Z Coilovers
Tein
Budget street coilover with EDFC option; fine for lowered street cars, outclassed once lap times matter.
Hardrace Complete Hardened Bushing Kit
Hardrace
Full compliance refresh; on an AP1, follow it with ~3mm total rear toe-in — the chassis's famous corner-exit snap is mostly geometry plus dead bushings.
Brakes
StopTech ST-40 328mm Front Big Brake Kit
StopTech
Fixed 4-piston fronts; the stock sliding calipers taper pads and fade on track once real tires go on. Verify 17-inch wheel barrel clearance.
Wheels
Volk TE37 Saga S-plus 17x9 / 17x10.5 Set
Rays Volk Racing
The standard S2000 track stagger for 255/275 rubber; AP1 rear fenders usually need rolling for the 10.5.
Prices are typical 2026 USD street prices. Fitment data is community-sourced tuning knowledge, not a guarantee — verify with your tuner before ordering. Marketplace links (Yahoo Japan, UpGarage, Nengun, RHDJapan, eBay) land here next.