Your engine choice would depend on the amount of performance and mileage gains you are seeking, and also on your local environmental laws.
A '98 Honda Civic was originally equipped with a D16Y8, not a B16A, but the D16Y8 would be an upgrade in power from all stock CRX engines.
The engine with the most power potential is going to probably be a B18C5, and the engine with the best mileage is probably going to be a D15Z1. Though not common, taking an engine from a '96-00 Civic HX would be an upgrade in power (albeit slight) and economy.
Yes, they make performance chips for a F150. They will add performance and increase you gas mileage to get the most out of your engine.
Decreased performance and fuel mileage.
You can optimize your vehicle's performance and achieve better gas mileage by using a performance chip. These chips can adjust the engine's settings to improve fuel efficiency and overall performance.
Try Gunk High Mileage Motor Flush to clean engine and Bars 2 Part Engine Fix to restore engine performance.
Engine makes noise, performance drops, fuel mileage drops,
around 1249 mileage you unlock engine swap and the level 9 engine, the rest of the parts are unlocked when you beat certain bosses or level up.
A belt that has jumped a tooth will cause the engine to be out of time. This will adversely effect performance and mileage. A broken belt will cause engine damage as this is an interference engine. Replace the belt every 80,000 miles at a minimum.
Poor performance, poor fuel mileage and may trip the check engine light.
Performance, horse power and fuel mileage will suffer.
The engine will almost never stay at the correct operation temp. Performance and mileage will suffer.
Fluid leaks,Noises,Smoke out the tail pipe,Poor performance,Poor fuel mileage,It stops running.
Restrict air flow, and inhibit performance. If it is plugged bad enough the engine will not start. A restricted muffler will cause an engine to loose power and run poorly, with bad fuel mileage.