It’s missing and half the time when I come to a complete stop at a light or sign it hesitates and I have to go full throttle till it clears up I’ve got the engine light checked and it called for misfire in bank 1 the first time and bank 2 the second time and I’m having people tell me to just straight pipe it

 

Welcome to the forum

What YEAR Ranger 3.0l 2WD?

2004-2006 had a TSB about misfires

There is no "misfire code" bank 1 or bank 2

What were the EXACT CODES

Codes seen here: https://www.therangerstation.com/tec...II_codes.shtml

Misfires can be a few things, dirty injectors, failing spark plugs or coil pack, low compression in effected cylinder
So without more info its just a guessing game

But not sure why or how a "straight pipe" would fix specific misfires???
Maybe those people could elaborate?

 

Since you stated the year in a duplicate post and its a 2005 Ranger then you will need to do a Compression test on all 6 cylinders FIRST

TSB Here: https://www.therangerstation.com/for...n-tsb-05-26-3/

If compression on ALL 6 cylinders comes in at 160-170psi then you can look at other possible issues, if a few are under 140psi then TSB is your problem
But a waste of time and money to look at spark, fuel or "exhaust" before a compression test

Clogged exhaust, i.e. bad Cat converter or muffler, will first cause a lack of power at highway speeds, then lack of power at lower speeds as it gets worse
At no time would it cause misfires, well until it was fully clogged and at that point you couldn't drive the vehicle at any speed

 

If where you live still has emission standards inspections, omitting anything from the vehicle for emissions would be a 'no go' and a headache at the BMV / DMV. Unless of course, there is a vehicle age limit for exemption. Always check the regulations/ laws for you local area as well as Federal requirements.

 

So it brought up two misfire codes P0300 and a catalyst system efficiency below threshold (bank1) under code P0420 the second time I tested the check engine it brought up catalyst system efficiency below threshold two time under code P0420

 

P0300 Random/Multiple Cylinder Misfire Detected
P0420 Catalyst System Efficiency Below Threshold (Bank 1)

Can you drive at highway speeds, i.e. above 60MPH and hold that speed?
If so replace rear O2 sensor, especially if its original, they only last 12 years max.

If engine struggles to maintain highway speeds then you could indeed have a clogged exhaust system
You can test for that with vacuum gauge

If engine can maintain highways speeds then do a compression test, all 6 cylinders, write down results

Rear O2 sensor measures Oxygen content in exhaust AFTER Cat converter burns up pollutants
The burning up of these pollutants uses up most of the oxygen in the exhaust so rear O2 shows 0.7-0.8volts, low oxygen levels
When O2s get older the chemicals they use to detect oxygen are used up so voltage drops to under 0.5v and you get P0420

When a cylinder in the engine misfires, no oxygen was used up in burning the gasoline(no fire), and that oxygen is dumped into the exhaust system, but you should also see LEAN codes from front O2 sensors when that happens, which you don't mention
So I would suspect rear O2 sensor just being old, assuming you CAN maintain highway speeds

 

Yes I can maintain highway speed it’s just when I come to a complete stop and get ready to go it acts up and hesitates that’s when I have to go full throttle until about 3-4,000 rpms and it like give a blow back and goes

 

Then not an exhaust issue, for sure

Compression test time