The two cars from the factory
| Car | Years | Engine | Gearbox | Stock power (US) |
|---|---|---|---|---|
| Civic Type R FL5 | 2022– (US 2023 on) | 2.0 turbo K20C1 | 6-speed manual, helical LSD | 315 hp |
| Civic Type R FK8 | 2017–2021 | 2.0 turbo K20C1 | 6-speed manual | 306 hp |
| Elantra N | 2022– | 2.0 T-GDi turbo | 6-speed manual or 8-speed wet DCT | 276 hp (286 with N Grin Shift) |
On the dyno the gap is bigger than on paper: Cobb measured a stock FL5 at 303 whp, while a stock Elantra N makes about 240–270 whp.
Stage by stage
| Car | Stock | Stage 1 | Stage 2 | Stage 3 | Stage 4 |
|---|---|---|---|---|---|
| Civic Type R FL5 | 303 whp | 320–338 whp | 335–361 whp | 500–525 whp | 600–750+ whp |
| Civic Type R FK8 | 306 hp | 340–365 hp | 360–400 whp | 450–550 whp | 600–650+ whp |
| Elantra N | 240–270 whp | 295–350 whp | 305–390 whp | 350–450 whp | 450–500 whp |
"whp" is measured at the wheels, "hp" at the engine; each guide keeps the unit its tuners publish. The FK8's Stage 2 top figure (400 whp) is on an E45 ethanol blend, and the Elantra N's Stage 2 top figure (390 whp) uses methanol injection. LAP3 measured 335 whp on a Stage 2 Elantra N with the stock turbo.
Stage 1: the Elantra N gains more
Software alone takes the Elantra N from about 240–270 whp to 300–350 whp. Flash tunes cost $499.95–$1,350 (Tork, LAP3) or CAD 799.99 (N75), and a JB4 is $599. Hyundai changed the engine computer in 2024 "to deter tuning", so a 2024-on car needs a bench flash or a spare computer.
The FL5 gains less, because its fuel system is already close to its limit: Cobb measured +19 whp on 91 octane and +35 whp on 93, to 323–338 whp. The engine computer has to be mailed to Hondata or Cobb to be unlocked first; the Accessport is $770 and the Hondata FlashPro $795. On the FK8, Hondata claims +33 hp on 91 and +47 hp on 93, for $695 plus a $250 jailbreak.
Stage 2 and 3: the Civic needs fuel, the Elantra N needs clutches
- Civic Type R: Hondata says the factory high-pressure pump is already above 90% duty on the stock turbo, so bigger power needs a fuel system ($2,995 from Hondata). Turbos cost $2,200–$4,800 (27WON, PRL, Full-Race); 27WON's Kuro is sold for up to 500 whp on the stock fuel system, and PLM's full FL5 package claims 525 whp for $11,995.
- Elantra N: hybrid turbos are cheaper, $1,095–$1,975 (Pure Turbos, LAP3, Turbo Parts Canada), and LAP3's hybrid files claim 350–380 whp on 93 octane. The limit is the gearbox: N75 warns the DCT "cannot handle hybrid power levels", so a DCT car needs stronger clutches (SSP's kit is $1,599). Check the fuel-pump recall on 2022–23 cars first.
Stage 4: only the Civic has a clear path
The K20C1 has built engines for sale, such as 1to1 Tuning's, rated for 650 hp and up, and community Civic builds with a built engine reach about 550–750 whp on ethanol. For the Elantra N we found no built short block; the top figures are 450–500 whp on E50 or methanol, with a specialist shop.
Which one should you choose?
- Most power per dollar on pump fuel: the Elantra N. Stage 1 and a hybrid turbo get it close to a tuned Civic for less money, best with the manual gearbox.
- A long build towards 500+ whp: the Civic Type R. Turbos, fuel systems and built engines are shared between the FK8 and the FL5, and the aftermarket goes much further.
- Already own one? Open its guide: it lists every tune, the parts each stage needs and where to buy them.
In Israel only 95 and 98 octane are sold, so plan around the 91 and 93 octane (US) figures; ethanol and methanol aren't sold at filling stations, and downpipes and turbos need approval under Regulation 380.
Keep reading
- Civic Type R FL5 tuning guide
- Civic Type R FK8 tuning guide
- Elantra N tuning guide
- Stage 1 vs Stage 2: how much each step adds
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