Unleaded, at least 87 octane, using higher is cool but not necessarily better.
it will fit but you need to convert it to a cable clutch because the 98's are hydraulic
Yes you just need to change the headlights and bumper lights along with the bumper
A supercharger, advance the ignition timing, reset the ECU, use high octane gas.
a vtec head, and a vtec enabled computer
Yes, but you'll need to change the headlights to 1998-2001 models.
The Parts you need for 1991 Acura Inegrahttp://www.autosparepartsusa.com/searchparts.aspx?make=58&made=Integra&year=1991
You can fit a 1.8 liter engine into your 1987 Acura Integra. You will need to modify the engine mounts and the wiring harness.
See link below
To check a engine light you need some kind of scan tool and it will show you what kind of code or codes is set for the engine light to go off.
No but to me it's just easier
it may need a new bulb
Most likely it's your valves in need of adjustment.