» Tech Guide: 2G 420A Upgrades
Non-turbo DSMs that were built from 1995-99 have a 2.0 liter, 140hp DOHC Chrysler 420A motor.
These motors are completely different from the Mitsubishi 2.0 liter motors and their parts
are not interchangable. To get more performance out of these cars, we've outlined a few
possiblities below. Of course, some mods may not adhere to
various vehicle emissions laws, so perform at your own risk.
- Air Intake
Replace your stock air box with a solid pipe and high-flow cone filter.
- Cat-back Exhaust
Replace your stock cat-back exhaust with a higher flowing model.
- High Flow Cat
Replace your stock catalytic converter with a higher flowing model.
- Exhaust Header
Replace your factory exhaust manifold with a tubular steel header.
- Bored-out Throttle Body
Increase the opening on your throttle body to increase air intake.
- Ported Intake Manifold
Further increases air intake.
- Camshafts and Cam Gears
Agressive camshafts and cam gears allow for more power through timing adjustment.
- Underdrive Pulleys
Underdrive pulleys can be added at the same time to reduce weight, which means the
engine will work less to drive the accessory belts.
- Cylinder Head Porting
Greatly increase air flow through the cylinder head. You may need to compensate
with more fuel, which means you'll need an aftermarket Air/Fuel Controller.
- Air/Fuel Controller
Allows tune-ability of the air/fuel mixture to avoid detonation and major engine damage.
- Ignition Timing Controller
Allows you to control the timing.
Forced Induction Options
- Turbo Kit
Bolt on a turbo kit for a huge power increase. Many of the All-Motor
upgrades can and should be used along with a turbo kit for maximum power output. To
learn the basics on how a turbo system works,
The fastest and easiest way to bolt on big power. It's also the fastest and
easiest way to destroy your engine if you don't know what you're doing. Read up on
before considering one.
- Turbo Engine Swap
This project is extremely time consuming, complex and expensive due to the amount of parts needed
to perform the task. The parts alone can range upwards of $5000. The basic parts needed are: Engine,
transmission, ECU, intercooler (and piping), fuel pump, complete exhaust system, and possibly a few
more things not mentioned. The two options above are definitely better choices for the less experienced.
Consider the cost of simply buying a factory turbocharged DSM before attempting this swap.