It depends on numerous factors, such as the cars, car's weight, configuration of engines (Boss 302, 350 LT1, etc), whether they're carbureted or fuel-injected, etc...
Depends on whether its fuel injected or carbureted, you didn't specify a year. If its fuel injected then you won't want to lean it anymore than factory because its already pretty high. If you need to alter your A/F mixture on a fuel injected bike you will need to purchase a programmer or fuel controller. If it is carbureted you will need to purchase a jet kit and be ready to spend a lot of time with an A/F gauge and have time to disassemble the carbs every time you want to make a change.
If you mean carbureted systems , that statement is FALSE Fuel Injection system pressures are a lot higher than the old carbureted systems
The carburetor should be easily visible on most cars. It will most likely be located somewhere between the air filter and the intake manifold on the engine. Most carburetors are bolted to the top of the intake manifold on top of the engine. Fuel injected cars will have no such device. Cars older than 80's models will likely be carbureted, while almost all cars 90's and later are fuel injected. also, all diesel engines are fuel injected. It should be noted that carburetors do not actually distribute fuel, but mix fuel and air in the correct ratios for combustion.
Modern fuel injected cars, no.
smoking
Most fuel pumps for fuel injected vehicles will cost more than $100.00, U.S.
The idle adjustment for a 2007 Honda Rancher 420 Fuel Injected engine is typically not adjustable like in carbureted engines. Instead, the idle speed is controlled by the engine's ECU (engine control unit) based on various sensor inputs. If you are experiencing idle issues, it is advisable to check for error codes or other mechanical issues rather than attempting to adjust the idle manually.
all fuel injected engines .any vehicle newer than a 1996 . have the fuel pump in the fuel tank
If memory serves me right, the 85 hp model for 1996, was carbureted, while the 90 hp was fuel injected. Other than that, 5 hp. Actually that's not right. The 90 also has carbs. The 85 doesn't have oil injection. The 85 has different porting which is the difference in HP.
See attached link. Carbureted models put out about 86 hp at the flywheel, Fuel Injected models put out about 91 hp at the flywheel. The B2200 engine has a very long stroke for a 4 cylinder and puts out much more torque than most 4 cylinder cars. Kyrasis6 Mazdatruckin.com
It makes your car go faster than average fuel :)