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Genesis G70 3.3TStage 1 to Stage 4 tuning guide

The G70 3.3T has the Kia Stinger GT's 3.3 twin-turbo V6, and nearly every engine part and tune fits both; this guide covers the 3.3T only, not the 2.0T or 2.5T. The G70's own catch is the model year: most tuners support 2018–2023 cars, and 2024-on engine and gearbox computers are still largely unsupported. Genesis Israel doesn't currently list the G70, so many cars here are personal imports.

Years: 2019– in the US (facelift 2022)
Engine: 3.3 T-GDi twin-turbo V6 (Lambda II)
Gearbox: 8-speed automatic, RWD or AWD
Stock power (US): 365 hp / 376 lb-ft

Power by stage

Stock is Genesis's engine figure. Stage 1 to 4 are the tuners' own figures at the wheels (whp), mostly on US 91–93 octane, which is about 95–98 RON in Israel. The top of Stage 2 to 4 needs methanol injection or ethanol.

Stock365 hp

Stage 1380–480 whp Stage 2430–530 whp Stage 3450–650 whp Stage 4650–900+ whp

Names with an arrow go straight to that part's product page for this car. Names in a dashed outline are other brands that make the part; exact links for them are being added.

1

Software, with new plugs

380–480 whp

A flash tune takes the G70 3.3T from about 310–330 whp to 380–480 whp, depending on fuel (LAP3's figures on a Dynojet). Check the model year first: SleepyTuned lists 2024-on cars as "not supported", Burger says "We do not offer any 2024+ maps", and LAP3 lists support up to 2026 with a spare or reflashed computer. The JB4 piggyback also works on a locked computer.

Typical cost: JB4 $599–$799; flash tunes $495–$1,500 (SleepyTuned, Tork, LAP3); DTE module $349–$799; gearbox tune $150–$1,250 (Burger, Tork, LAP3).List prices, Sept 2026, before shipping, import tax and fitting.

Stage 1 tunes compared

Tune	Fuel	Claimed power	Claimed torque	Notes
LAP3 Stage 1.0 / 1.5	91+ / 93+ US	380–460 / 410–480 whp	—	HKS plugs required; 2019–2026 cars
SleepyTuned custom tune	91 / 93 US	about 420 / 440 whp	—	Its own estimates; 2018–2023 only
Burger JB4	91 US minimum; 91 / 93 / E85 maps	up to +100 whp	up to +100 wtq	Piggyback; works on a locked computer
Tork Stage 0 / Stage 1	91 / 93 US	up to +70 / +100 whp	up to +70 / +100 wtq	Engine computer sent in; Stage 1 needs intakes and HKS plugs
DTE PowerControl X	—	+50 hp	+83 lb-ft	Plug-in module

Recommended with Stage 1

New or colder spark plugs required HKSNGK
Burger calls spark blow-out a known issue on this engine even at stock boost.
Gearbox (TCU) tune recommended LAP3 TCU tune Tork 8-speed TCU tune Burger TCU map
More line pressure and higher torque limits; LAP3's covers 2019-on G70s with the E-Shift selector.
Gearbox oil cooler hot climates BMS transmission cooler CSF Concept 3 cooler
Burger "strongly suggests" one for higher power or hot climates.

Before you buyUS 91 octane is about 95 RON and 93 about 98 RON. Genesis's warranty excludes damage from "Modifications, alterations, tampering" and from devices it didn't supply.

2

Downpipes, intake and cooling

430–530 whp

Stage 2 adds downpipes, intakes and a bigger intercooler with a Stage 2 file. LAP3 claims 430–500 whp on 95+ octane, and 460–530 whp with the methanol injection it requires for that file. Most of the parts are shared with the Stinger; the downpipe kits below are G70-specific.

Typical cost: downpipes $599.99–$819.99 (Circuit Werks) or $695.75 (ARK); intake $379–$629.99 (BMS, aFe, K&N); intercooler $779 (BMS) or $1,499.95 (Mishimoto); Burger 450 whp package $1,299–$1,399.List prices, Sept 2026, before shipping, import tax and fitting.

Stage 2 packages compared

Package	Fuel	Claimed power	Claimed torque	Required hardware
LAP3 Stage 2.0 / 2.5	95+ / 98+ or with meth	430–500 / 460–530 whp	—	Bolt-ons; methanol injection required for 2.5
Burger 450 whp package	—	over 450 hp	—	JB4PRO, intake, catch can and plugs; fits 2018+ G70 3.3

Parts list

Downpipes required Circuit Werks G70 downpipe and midpipe kit Circuit Werks G70 downpipes ARK Performance downpipes
The V6 has primary and secondary downpipes; ARK's secondary pipes fit 2019–26 G70s.
Intake required aFe Takeda intake K&N Typhoon intake BMS dual intake
aFe claims +22 hp; K&N measured +9 hp at the wheels.
Intercooler recommended Mishimoto intercooler kit BMS intercooler
Mishimoto lists 2019–25 G70s and measured +8 whp on a stock tune.
Fuel for the top of Stage 2 BMS fuel pump upgrade BMS charge-pipe injection BMS charge pipe
Burger calls the factory high-pressure pump the limit.

Before you buyCatless downpipes won't pass inspection and can make the engine smoke or burn oil. We found no G70 cat-back exhaust with a verified claim; the Stinger's don't fit. Methanol and ethanol aren't sold at Israeli filling stations.

3

Hybrid turbos and head studs

450–650 whp

Stage 3 upgrades both turbos, and all the kits below list the G70. LAP3's hybrid files claim 450–550 whp on 93 octane and 500–650 whp with methanol, and TurboKits measured 615 whp on E30 and methanol with its TK700 turbos. SleepyTuned recommends head studs above about 480 whp, because the stock head bolts are shared with the non-turbo 3.3.

Typical cost: hybrid turbos $1,649.99 with core exchange (Pro Xe), $3,495 (TurboKits TK700) or €2,539.09–€3,108.20 (Muchboost); head studs $695.50 (Tork); port injection $1,999 (BMS).List prices, Sept 2026, before shipping, import tax and fitting.

Hybrid turbos compared

Turbos	Fuel	Claimed power	Claimed torque	Notes
TurboKits TK700	E30 + meth	615 whp	594 wtq	Head studs needed above 22 psi
Muchboost 570 / 600 / 650	—	about 570 / 600 / 650 hp	—	Engine figures
Pro Xe LAMDA-680	—	supports 680 bhp	—	A hardware rating
LAP3 Stage 3.0 / 3.5 files	93+ / with meth	450–550 / 500–650 whp	—	For upgraded turbos

Parts list

Hybrid turbos required TurboKits TK700 Muchboost hybrids Pro Xe LAMDA-680
Each needs a tune written for the new turbos.
Head studs required Tork head stud kitARP
LAP3 wants studs and block thread reinforcement from about 500 whp.
Port injection for ethanol BMS port injection kit
Six extra injectors and a pump; Burger claims up to 900 whp on E85.
Gearbox upgrade recommended Lambda Raceworks 8-speed build
A rebuilt automatic; no torque rating is published.

Before you buyTork recommends a 7,200 rpm limit because the valve springs float above 7,400. The biggest figures need E30 or methanol, which aren't sold at Israeli filling stations.

4

Big turbo kits and built engines

650–900+ whp

Stage 4 replaces the turbos and manifolds with a big-turbo kit, and at the top builds the engine. IMR claims more than 900 whp from its twin-turbo kit for the Stinger, G70 and G80, and SleepyTuned says builds beyond 650 whp need forged internals and an upgraded drivetrain.

Parts list

Big twin-turbo kit required IMR twin-turbo kit LAP3 twin XT26 kit
Manifolds, turbos, wastegates and downpipes.
Built engine required Lambda Raceworks "Bulletproof" 3.3 Lambda Raceworks 4.1 race engine
Studs and block inserts, or a 4.1 with forged pistons and a 12-month warranty.

Before you buyStage 4 is an engine build, not a bolt-on. Choose one shop to build, tune and stand behind the engine and gearbox together.

Watch: real builds

From tuners', shops' and motoring journalists' own YouTube channels. Nothing loads from YouTube until you press play.

Stage 2LAP3's tune takes a G70 3.3T to 490 whpLAP3 USA on YouTube

Stage 28020 Automotive: a 500 whp G70 for under $2,000 in parts8020 Automotive on YouTube

Stage 4Burger Motorsports puts a 700 whp G70 on the dynoBurger Motorsports on YouTube

All build videos, by car

Questions to ask the shop

Is my model year and calibration flashable, or does a 2024-on car need a spare computer or a piggyback only?
Is the file written for 95 or 98 RON without ethanol, and what boost does it run at peak and at 6,000 rpm?
Which plugs do you require, and from what power do you insist on head studs?
Will you tune the gearbox too, and do I need a transmission cooler for summer heat?
Which downpipes keep their catalysts so the car passes the annual inspection, and can it go back to stock?
Do you log and revise the file afterwards, and what happens to my warranty?