My Jetta

The current version of my Mk2 Jetta: an ABA 2.0 8-valve running a turbo on MicroSquirt standalone engine management, with water/meth injection.

At a glance

Chassis	Mk2 Jetta
Engine	ABA 2.0 8-valve, turbocharged
Engine management	MicroSquirt V3, MS2/Extra 3.4.4, tuned in TunerStudio
Fuel	92 octane plus water/meth
Peak boost	About 15 to 16 psi
Power	180 whp at 9 psi on the dyno baseline. Target is 250 whp.

Parts breakdown

Engine management

Part	Brand / part number	Notes
ECU	MicroSquirt V3	MS2/Extra 3.4.4 firmware
Crank trigger	60-2 trigger wheel with VR sensor

Ignition

Part	Brand / part number	Notes
Coil	MSD Blaster SS	Single coil with distributor
Spark plugs	BKR6E

Fuel

Part	Brand / part number	Notes
Injectors	Bosch 440cc, 0280155968	Near the limit at about 95% duty cycle
Fuel pump	DeatschWerks DW200
Fuel pressure regulator	SPA Turbo Rising Rate	43.5psi base pressure

Forced induction

Part	Brand / part number	Notes
Turbo	MaxpeedingRods	.63 A/R T04E
Exhaust manifold	CTS Cast	External Gate
Wastegate	On3, external
Intercooler	SpeedFactory front mount	About 1-2PSI pressure drop
Blow-off valve	Amazon Cheapo
Turbo oil drain	HPS FKM-lined hose, FKM-062-BLK	Barbed fitting, replaced a leaking PTFE AN line

Water/meth injection

Part	Brand / part number	Notes
Kit	Snow Performance Stage 2
Float switch	Snow Performance SNO-40035	Wired to the MicroSquirt flex input as a low-fluid failsafe

Cooling and accessory drive

Part	Brand / part number	Notes
Radiator	3-row aluminum
Water pump pulley	VR6
Alternator	Mk4-style
Harmonic balancer	Stock

What changed from the last version

Planned next

• Larger injectors to support the 250 whp target
• AEG wasted-spark coil pack (032 905 106B/E) to replace the single coil and clean up the high-RPM misfire

Back to all versions of my Jetta