Here she is.. has 31x10.5s if anyone is curious
... looking for long tubes preferably I need power gain

 

You have a 2.3l Duratec DOHC engine in a 2002 Ranger, also known as Mazda L engine

Thread here say MSDS make one for your engine: https://www.ranger-forums.com/dohc-2...uratec-146576/

You already have a mid-rpm header, thats what factory engines came with

The MSDS is most likely a lower-RPM header

Since the late 1950'/early 1960's car makers have been using Scavenging exhaust manifolds, AKA headers
These create a lower pressure at the exhaust valves at a specific RPM, so exhaust is PULLED out of a cylinder leaving more power on the crank shaft
The size of the pipe and its length, and the size of the collector(where the smaller pipes meet) is what sets that specific RPM

So headers can be made with low RPM power gain, Mid RPM, or high RPM(racing header), by varying their construction
So when engine is near that specific RPM there is a free power gain by the low pressure created

This is also where the MYTH of an engine needing Back Pressure came from, no 4-stroke engine runs better with back pressure, lol
People would install larger pipes at the head, "free flow" system
Then would go out for a drive...................................."WTF!!!!, I LOST POWER"
Yes, they did, they lost the scavenged free power from the factory headers/manifold

But they, wrongly, assumed the engine must need back pressure, so a myth was created


With 31" tires you should be running at least a 4.10 rear axle

 

yeah I just wanted to avoid spending that near thousand dollars for as long as possible.. I’m topping out at around 75 lmao

 

Hey, "Better in hock than stock"

 

Topping out at 75 MPH?

That 2.3 is TIRED. You need to be running smaller tires.

 

definitely not tired lol has 50k miles.. if I ride out 4th I can hit 90 no problem. Also has a vacuum leak I haven’t fixed yet

 

It shouldnt have a single problem getting into triple digits. It might take a few, but it should be able to do it.

Its too over-loaded.