Questions and answers

What size is stock Miata exhaust?

What size is stock Miata exhaust?

As I recall, the stock size for the 1.8 engine exhaust is about 1.75 inches in diameter, and about 6 inches around the outside of the pipe. Most aftermarket “free-flow” exhausts begin at 2.25 inches (naturally aspirated) and stretch from 60 mm (2.37 inches), to 2.5 inches (turbo cars), and up.

How much does it cost to straight pipe a Miata?

Mazda Miata Exhaust Pipe Replacement Cost Estimate. Labor costs are estimated between $70 and $89 while parts are priced between $627 and $629.

What engine is in a 91 Miata?

Used 1991 Mazda MX-5 Miata Specs & Features

Engine
Base engine size 1.6 l
Base engine type Gas
Cylinders Inline 4
Horsepower 116 hp @ 6500 rpm

How do I choose exhaust diameter?

The quick and easy way to choose what diameter pipe you will need from the headers to the mufflers is to go back to the old rule of thumb, that for every 100 horsepower, 1 inch of total pipe diameter is needed across the system.

Is 1991 Miata RWD?

The Mazda MX-5 is a lightweight two-passenger roadster sports car manufactured and marketed by Mazda with a front mid-engine, rear-wheel-drive layout.

What does Miata NB mean?

Everything You Need to Know Before Buying a Second-Gen Mazda Miata. The second-generation Miata, or NB, is the sweet spot for the Japanese sports car. The third generation car is the heaviest and most powerful, but these are not the kind of descriptors you want your Miata to have.

Is 4 inch exhaust too big?

The general rule of thumb for exhaust systems is, as we said 3-3.5in for 250-350whp, above that 4″ exhaust is the right size, but that’s about as big as you want to go, even at the 400whp-500whp level.

Do you need a larger exhaust in a Miata?

A larger diameter exhaust won’t necessarily hurt performance (unless you go for 2.5″ or more in diameter), but you won’t see a boost in horsepower or torque with anything larger. Basically, your MX5 will be louder, but it won’t go any faster. Adding a supercharger to your Miata does not always mean you need a larger diameter exhaust.

What is the NB to Na Miata compatibility guide?

This compatibility guide is meant to be a reference point for 1990-1997 (NA) Miata owners looking to upgrade or replace certain parts with items from the second generation 1999-2005 (NB) Miata. Parts that are a direct bolt-on fit will simply be marked “direct fit”, while parts that require other components or modifications will have more detail.

What kind of parts do I need for a 1990 Miata?

Comprehensive guide showing which parts from a 1999-2005 Miata fit your 1990-1997 Miata. This compatibility guide is meant to be a reference point for 1990-1997 (NA) Miata owners looking to upgrade or replace certain parts with items from the second generation 1999-2005 (NB) Miata.

Do you need a supercharger in a Miata?

Adding a supercharger to your Miata does not always mean you need a larger diameter exhaust. On the other hand, adding a turbo probably does. Turbos are powered by exhaust gas pressure and increases your engine’s compression ratio by sending more air into the cylinders.