Diamond Star Motors

Eagle talons, Mitsubishi eclipses, and Plymouth lasers, are all known as “DSM’s” because they were all equipped with the same parts and engines from Diamond Star Motors. Only slight changes were made between each year from 1990 to 1994 and there are only slight variations in bumpers, and other body parts from each company that claimed their “DSM”. Diamond-Star Motors was officially dissolved in 1993 after the design and production tooling for the 1994 and 1995 cars wad complete. Mitsubishi Motors continues to operate the plant formerly responsible for DSM cars under sole ownership. Below is a table that shows the different models available from 1990-1994 as well as their engine type and horsepower rating. For pictures and more specific information about Talons, Eclipse, and Lasers please visit the links on my web site.

Table 1: 1990-1994 Talon/Eclipse/Laser

Specification	Base model	Mid model	Upper model (FWD)	Upper model (AWD)
Eclipse model names	GS	GS	GS/GST	GSX
Talon model names	DL	ES/ESi	TSi	TSi AWD
Laser model names	none/RS	RS	RS Turbo	RS Turbo AWD
Engine	1.8L	2.0L	2.0L turbo	2.0L turbo
Horsepower	92	135	190 / 195 (M/T) 180 (A/T)	190 / 195 (M/T) 180 (A/T)
Valves	8v	16v	16v	16v
Cam type	SOHC	DOHC	DOHC	DOHC

There are many differences, both major and minor, between various model years. To date, no comprehensive list exists which details all of the changes; to list them all is beyond the scope of this FAQ. A few of the high points are:

1990

Inagural model year of the DSM.
Pop-up headlights.
Some high-end models had wheel covers.
All ECUs had EPROMs. [Updated: see bottom of this answer!]
Front brakes change during the model year.
1.8L models have the 4G37 engine, all others have the 4G63 engine.

1991

ECU changes mean that 1991+ ECUs don't operate the 1990 tachometer correctly.
Most ECUs had EPROMs.
First model year with ABS available. ABS not available with limited-slip differential (LSD).
All high-end models had alloy or mesh wheels.
First year of the Galant VR-4 - 2000 sold in the American market.

1992

Non-popup headlights introduced on all models.
The first AWD Lasers were introduced.
Few (or no) ECUs have EPROMs.
ABS now available with LSD.
The engine changes from the 6-bolt version to the 7-bolt version in April.
Second and final year of the Galant VR-4 - 1000 sold in the American market.
The last year of the Dodge 2000GTX.

1993

"Big brake" 2-piston front calipers become standard on turbo models.
7-bolt engines are now standard.
No ECUs have EPROMs.
Diamond-Star Motors ceases to exist.

1994

All cars built to California emissions standards - there are no "Federal" cars.
The last year of the 1G car and the 1.8L NT models.
The last year of the Plymouth Laser.

Note: the information above has been taken from vfaq.com and i take no credit for creating the following table or year time line.