What are the differences between a turbo car and a non-turbo car?

For 1Gs, there are several differences between T and NT cars of the same year, aside from (duh) the turbo (or lack thereof).

Generally, turbo cars can be identified by:

• The lettering 'TSi' on the rear of the car. Non-turbos are "ES", "ESi", or "DL".
• The presence of a boost gauge in the instrument cluster, inset into the tachometer. (Pictures (2G) here and (1G) here (Adobe Acrobat required). This gauge does not exist on NT cars.
• The words "Premium unleaded fuel only" on the fuel gauge. See (2G) here (Acrobat required).
• For AWD cars only, the words "All Wheel Drive" on the side of the car.

On 1G cars, there are two non-turbo engines: the SOHC 1.8L and the DOHC 2.0L. The 2.0L is based on the same 4G63 engine as the turbo models. It has higher compression pistons (9:1 vs 7.8:1) and no turbocharger or intercooler. The 1.8L is based on the 4G37 engine and also has 9:1 compression.

On 2G cars, there also also two non-turbo engines: the 2.0L and the 2.4L. The 2.0L is not based on the Mitsubishi 4G63 engine; rather it is based on the Chrysler 420A engine, which is why 2G NT owners share some parts, upgrades and procedures with other Chrysler products such as the Are Sebrings and Avengers DSMs?. The SOHC 2.4L is the Mitsubishi 4G64 engine, which is "sort-of" similar to the 4G63 engine used in the turbo models. The 4G64 was only offered in the Spyder convertible models.